WO2008018617A1 - Cigarette filter - Google Patents

Cigarette filter Download PDF

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Publication number
WO2008018617A1
WO2008018617A1 PCT/JP2007/065876 JP2007065876W WO2008018617A1 WO 2008018617 A1 WO2008018617 A1 WO 2008018617A1 JP 2007065876 W JP2007065876 W JP 2007065876W WO 2008018617 A1 WO2008018617 A1 WO 2008018617A1
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WO
WIPO (PCT)
Prior art keywords
filter
catalyst
cigarette
catalyst component
carbon monoxide
Prior art date
Application number
PCT/JP2007/065876
Other languages
French (fr)
Japanese (ja)
Inventor
Hiroki Taniguchi
Nobuyuki Ohji
Original Assignee
Daicel Chemical Industries, Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daicel Chemical Industries, Ltd. filed Critical Daicel Chemical Industries, Ltd.
Publication of WO2008018617A1 publication Critical patent/WO2008018617A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/89—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with noble metals
    • B01J23/8906—Iron and noble metals
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/16—Use of materials for tobacco smoke filters of inorganic materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/48—Silver or gold
    • B01J23/52—Gold
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
    • B01J21/063—Titanium; Oxides or hydroxides thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
    • B01J21/08—Silica
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/18—Carbon
    • B01J35/19—

Definitions

  • the present invention relates to a cigarette smoke filter that can reduce the amount of carbon monoxide inflow into the mouth of a smoker and reduce adverse effects on the health of the smoker, and a method for producing the same.
  • Patent Document 1 As a method for removing carbon oxide, Japanese Patent Laid-Open No. 60-216843 (Patent Document 1) describes the use of a catalyst in which platinum or palladium is supported on the surface of aluminum oxide particles to monoxide in cigarette smoke. A method for removing carbon by oxidizing it to carbon dioxide has been proposed. This catalyst develops its ability to oxidize carbon monoxide when relatively high-temperature cigarette smoke comes into contact with the catalyst, but its ability to oxidize carbon monoxide decreases near room temperature, and the monoxide is oxidized. It is difficult to remove carbon efficiently. In addition, the ability to remove carbon monoxide and carbon greatly depends on the external environment during smoking, especially the outside temperature.
  • JP-A-60-28823 uses a cigarette holder filled with catalyst powder in which palladium fine particles are supported on manganic acid soot, and carbon monoxide in cigarette smoke is reduced to carbon dioxide.
  • a method of oxidizing and removing to carbon is disclosed. This method has a relatively high ability to oxidize carbon monoxide and carbon even at room temperature.
  • this prior document describes that it can be used for reducing CO in cigarette smoke used for filling filters and cigarette holders.
  • the taste of tobacco may be impaired.
  • JP-A-9-140370 discloses that carbon monoxide in cigarette smoke is oxidized and removed to carbon dioxide using a catalyst in which gold fine particles are supported on a transition metal oxide support. A method to do this has been proposed.
  • this catalyst has a relatively high oxidizing ability for carbon monoxide CO, the catalyst powder is likely to become very fine, so when added to a cigarette smoke filter or leaf tobacco, the ventilation resistance becomes too large or added. When you do, the suitability for operation and the yield are not necessarily good.
  • Patent Document 4 discloses a technique in which a porous material carrying a catalyst component is added to an element (leaf tobacco or tobacco smoke filter) constituting tobacco.
  • the catalyst component is composed of a metal compound (transition metal oxides such as iron oxide, cobalt oxide and nickel oxide) and a gold catalyst (gold fine particles having an average particle size of 0.1 to 10 nm). It is described that the proportion of gold atoms is about 0.:! To 15% with respect to the entire metal component of the catalyst component. Further, it is described that the supported amount of the catalyst component is 1% by weight or more with respect to the porous body (activated carbon, silica gel, alumina, etc.). It is also described that cigarettes (cigarettes) are made up of a leaf tobacco part and a cigarette smoke filter attached to the leaf tobacco part. In this technique, it is described that the porous material includes activated carbon, silica gel, and alumina force.
  • the suitability for operation and the yield when added are improved, and the ventilation resistance does not become too high.
  • the carbon monoxide reduction amount is lower than that of Patent Document 3, and the carbon monoxide diverging amount is 0.6 even in the most excellent embodiment described in the examples. This is 35% in terms of carbon monoxide removal rate.
  • Ventilation resistance has a strong impact on tobacco smoking, and carbon monoxide should be removed as much as possible for smokers' health. There was no cigarette finoleta with low airflow resistance and high carbon monoxide removal performance.
  • Patent Document 1 JP-A-60-216843 (Claims)
  • Patent Document 2 JP-A-60-28823 (Claims)
  • Patent Document 3 JP-A-9-140370 (Claims)
  • Patent Document 4 JP-A-11-235169 (Abstract, Claims, Examples)
  • the present invention provides a cigarette filter that can effectively remove carbon monoxide in cigarette smoke and has a quick change in ventilation resistance.
  • the present invention has been completed by finding that a cigarette filter having a structure comprising a support made of a material can efficiently remove carbonic acid carbon and does not impair ventilation resistance.
  • the catalyst component is composed of a metal compound and a gold catalyst.
  • the carrier made of a porous material carrying the catalyst component disposed in the middle part of the tobacco filter of the present invention may be a particulate component. Further, both end portions constituting the cigarette filter may be a normal filter material.
  • the airflow resistance value at both ends may be large relative to the airflow resistance value at the intermediate part.
  • the present invention may have a structure in which filter rods containing cellulose ester fibers are arranged at both ends.
  • the porous body is at least one selected from live raw charcoal, silica gel, and alumina, At least one metal compound (or support) selected from iron oxide, titanium oxide, cobalt oxide and nickel oxide, and a gold catalyst supported on this metal compound (or support) Good.
  • the metal compound may be an oxide.
  • the metal compound may be iron iron or titanium oxide.
  • the combination of a metal compound and a porous material is that the metal compound is iron oxide and the porous material is active.
  • the charcoal or the metal compound may be acid nickel and the porous body may be silicagenole.
  • the carrier carrying the catalyst component may include at least a carrier carrying the catalyst component on activated carbon.
  • the porous body carrying the catalyst component may be a mixture of a carrier carrying the catalyst component on activated carbon and a carrier carrying the catalyst component on silica gel.
  • FIG. 1 is a sectional view of a cigarette using the cigarette filter of the present invention.
  • the part indicated by number 1 is the tobacco leaf part.
  • the part indicated by number 2 is a cigarette paper.
  • the number 5 part consisting of the number 3 and number 4 parts is the Ryoaki tobacco filter.
  • the part indicated by the number 3 is “both ends”.
  • the part indicated by the number 4 is an “intermediate part”.
  • FIG. 2 is a partial perspective view of a cigarette provided with the cigarette filter of the present invention.
  • the part indicated by number 1 is the tobacco leaf.
  • the part indicated by number 2 is a cigarette paper.
  • the part indicated by the number 3 is “both ends”.
  • the part indicated by the number 4 is an “intermediate part”.
  • the cigarette filter of the present invention is characterized by comprising at least three partial forces. That is, the cigarette filter has a structure in which at least both end portions and an intermediate portion have three member forces, and the carrier of the present invention is disposed in the intermediate portion (that is, the central portion).
  • Figure 1 shows a cross-sectional view of the tobacco filter of the present invention.
  • Figure 1 1 The right side of the figure (on the side opposite to the tobacco leaf side) corresponds to the tobacco outlet side.
  • a cigarette filter is formed by aligning filter tows and curling the filter rod fixed with a plasticizer such as triacetin with a wrapping paper.
  • a plasticizer such as triacetin with a wrapping paper.
  • Fig. 1! /, 1 is equivalent to the tobacco leaf part.
  • a cigarette filter hitting the mouthpiece is joined to the tip of the tobacco leaf.
  • the cigarette filter of the present invention is composed of three parts as shown in FIG.
  • portions formed by filter rods are arranged at both ends, and a filter is formed at the center. It takes a structure in which the carrier of the present invention is arranged on the tarod.
  • the part formed by the filter rod at the end corresponds to the part shown as 3 both ends in Figure-1.
  • the middle part of 4 shown in Fig. 1 is placed at the center of both ends of 3 in Fig. 1.
  • the present invention is characterized in that a support made of a porous material supporting a catalyst component is disposed in a portion shown as an intermediate portion
  • FIG. 12 shows a partial perspective view of a cigarette provided with the cigarette filter of the present invention.
  • a granular carrier may be disposed in the middle part.
  • the granular material is sandwiched and fixed between both ends formed by filter rods in the intermediate portion in the present invention.
  • the diameter of the cigarette filter of the present invention is preferably the same as that of the conventional cigarette filter, and a diameter of 14 to 25 mm can be used.
  • the airflow resistance value at both ends is set higher than the airflow resistance value of the intermediate part filled with the carrier.
  • the reason why the cigarette filter can be obtained clearly has a low ventilation resistance and a high carbon monoxide removal performance.
  • a cigarette filter with low ventilation resistance and high carbon monoxide removal performance can be obtained.
  • the ventilation resistance is high, that is, if the pressure loss when the gas passes is high, the oxidation time by the catalyst is sufficient, but if the ventilation resistance is low, it is sufficient. Since the catalyst reaction time cannot be obtained, the carbon monoxide removal performance may be reduced. On the other hand, if there is a difference in the airflow resistance value between the both end portions and the intermediate portion as in the present invention, there is a possibility that the reaction time of the catalyst can be obtained.
  • the porous body carrying the catalyst is used. Since the (support) is not dispersed in the cellulose acetate fiber, the adsorption and desorption force of the carbon monoxide of the cellulose acetate fiber results in only the adsorption and desorption of carbon monoxide by the porous material. Even when the catalyst is supported on the carbonaceous material, there is a possibility that the performance of the catalyst is not lowered and the carbon monoxide removal performance is maintained.
  • the catalyst component is dispersed in the cellulose acetate fiber and the case where the catalyst component supported on the porous body is dispersed in the cellulose acetate fiber.
  • the catalytic performance may be reduced.
  • the porous material and the cellulose cellulose acetate fiber interact with each other. It is possible to estimate that the catalytic activity does not decrease because the action is inhibited.
  • the catalyst support (porous material or cellulose acetate fiber) must be exposed to space in order to obtain the oxygen necessary to acidify the carbon monoxide and carbon.
  • Strength When the catalyst supported on the porous material is dispersed in cellulose acetate fiber, the required space is reduced and the catalyst performance is lowered.
  • the structure as in the present invention it can be estimated that a sufficient space is obtained around the porous body, so that a decrease in the activity of the catalyst is suppressed.
  • the adsorption effect of the substance which poisons the catalyst in tobacco smoke can be considered.
  • the porous material is dispersed in the cellulose acetate fiber, there is a poisonous substance in which the poisonous substance is not sufficiently trapped in the cellulose acetate fiber.
  • the poisonous substance is adsorbed while passing through the cellulose acetate fiber, and the degree of poisoning of the catalyst is reduced, that is, the poisonous substance adsorption effect of the cell mouth acetate fiber may be functioning effectively. It is possible.
  • the intermediate portion is a void portion surrounded by both ends and the wrapping paper, and a carrier of this invention is disposed here.
  • the carrier of the present invention is powdery or granular, and particularly preferably, the particle size passes through 10 mesh and passes through 70 mesh, and the content in the range (10 mepass 70 mesh on) is 90% by weight or more. It is a granular material.
  • the length of the intermediate portion (the length in the axial direction of the cigarette) can be adjusted as appropriate according to the filling amount of the carrier. If the length is about 3 mm and about 15 mm, 5 mm is more preferably about 10 mm.
  • both ends and other tobacco filter parts may be provided.
  • the cigarette filter can be configured such that the suction side is configured with two partial forces, and the intermediate portion and the end are configured with four partial forces.
  • the filling rate in the intermediate part is not particularly limited as long as the filling rate is such that the carrier is not compressed. If the filling rate becomes too high, the ventilation resistance value becomes higher than both ends, and this form is not preferable. Furthermore, as for the filling state of the intermediate part, the filling amount of the intermediate part is lowered, the gap is intentionally provided, and the intermediate part is allowed to move by shaking.
  • both ends constituting the cigarette smoke filter of the present invention include the following four points.
  • the porous material carrying the catalyst is held inside the cigarette smoke filter without using a plasticizer (adhesive) such as triacetin to maintain the structure of the cigarette smoke filter and attach it to the cigarette.
  • a plasticizer adheresive
  • triacetin to maintain the structure of the cigarette smoke filter and attach it to the cigarette.
  • the fourth is to prevent smokers from inhaling a catalyst or a porous material (support) carrying a catalyst without using a plasticizer (adhesive) such as triacetin. That is, in the case of adopting the configuration of the present invention, it is fixed to the material constituting the filter lot with triacetin or an adhesive, but there are both ends on the suction port side. Both ends on the mouth side can prevent the carrier from being sucked into the mouth of the smoker.
  • a plasticizer adheresive
  • the length of both ends (the axial length of the tobacco smoke filter) is 2 to 15 mm, preferably 3 mm as the both ends on the tobacco leaf side. It is 12 mm, more preferably 5 mm to 10 mm. If the length of both ends on the tobacco leaf side is short, the ability to remove poisonous substances in tobacco smoke may not be sufficient, which may reduce the activity of the catalyst and impair the function of encapsulating the catalyst. Cases can arise.
  • the length of both ends on the mouthpiece side is 5 to 25 mm, more preferably 7 to 23 mm, more preferably 10 mm, 20 mm, and particularly preferably 12 to 18 mm. If the length of both ends on the mouth side is short, the filter hardness may be insufficient, which may impair the feeling of smoking. Becomes larger.
  • 15 mm force is 35, preferably 17 mm to 30 mm, more preferably 20 mm to 27 mm.
  • one or more vent holes may be provided at both ends on the tobacco leaf side and both ends on the suction mouth side as necessary.
  • both ends constituting the cigarette smoke filter of the present invention
  • materials for both ends are used. That is, the material of both ends is a conventional filter material such as cellulose (wood fiber and linter pulp which may be fibrinized), regenerated cellulose (viscose rayon. Copper ammonia rayon etc.), cellulose ester, synthetic high It can be composed of fibers and granules such as molecules (polyester, polyurethane, polyamide, polyethylene, polypropylene, etc.). These fibers and powders can be used alone or in combination of two or more.
  • the filter material must have a ventilation resistance and density within the range that does not impair the filter characteristics, for example, a filter with a length of 10 cm and a straight defect of 7.8 mm, with a ventilation resistance of 200 to 600 mm WG (water gauge), preferably about 300 to 500 mm WG. There is density. 20 to 0.50 gZcm2, preferably. It is often about 25 to 0.45 g / cm 2 (for example, 0.30 to 0.45 g / cm 2).
  • Preferred filter materials include cellulose fibers and / or cellulose ester fibers, and at least cellulose ester fibers are often included to improve the taste.
  • cellulose ester fibers include organic acid esters such as cellulose acetate, cellulose propionate, and cellulose butyrate (for example, esters with organic acids having about 2 to 4 carbon atoms); cellulose acetate propionate, and cellulose acetate petite.
  • mixed ester esters such as cellulose ester derivatives such as polycaprolactone grafted cellulose esters. These cellulose ester fibers can also be used alone or in admixture of two or more.
  • the average degree of polymerization (viscosity average degree of polymerization) of the cellulose ester can be selected, for example, from the range of about 50 to 900, preferably about 200 to 800, and the average degree of substitution of the cellulose ester is, for example, 1.5 to 3.0. You can choose from a range of degrees.
  • Preferred cellulose esters include, for example, cellulose acetate, cellulose propionate, cellulose petitate, cellulose acetate propionate, cellulose acetate propylate, especially cellulose acetate.
  • the both end portions can be formed by a known filter forming method.
  • a papermaking structure filter or a filter molded with a foam can be used.
  • the most preferred structure is a toe-structured filter rod.
  • both ends of the tobacco leaf side and the both ends of the suction mouth of the present invention may be divided into two parts as required.
  • the both ends of the tobacco leaf side may have a single structure
  • both ends of the suction mouth side may have a two-part structure
  • a charcoal filter may be disposed at a portion corresponding to the middle of both ends and the suction mouth. Nare ,.
  • the both ends of the mouthpiece side are divided into two parts, and the middle part between both ends and the suction mouth.
  • a filter rod having a tow structure in which the plasticizer is used and a catalyst or a carrier is spread may be disposed.
  • the tow-structure filter rod is a tow formed by bundling single fibers (filaments) of, for example, about 3,000 to 1,000,000, preferably about 5,000 to 100,000 cellulose ester fibers. Fiber bundle).
  • the cross-sectional shape of the fiber is not particularly limited. There may be.
  • the fiber diameter and fiber length can be selected according to the type of fiber. For example, the fiber diameter is 0.01 to: I00 / im, preferably about 0.1 to 50 ⁇ , the fiber length is 50 ⁇ m to 5 cm, A range force of preferably 100 ⁇ m to 3 cm 3 degrees is also often selected.
  • the fineness of the cellulose ester can be selected in the range of 1 to 16 denier, preferably 1 to about 10 denier.
  • the fibers such as cellulose ester fibers may be non-crimped fibers or crimped fibers. It is particularly preferable to use crimp » ⁇ .
  • the filter material may contain a conventional binder component in order to make the filter rods exhibit appropriate hardness.
  • the binder component includes plasticizers (such as triacetin), resins (water-soluble or water-insoluble polymers selected from natural, semi-synthetic, and synthetic polymers), Polysaccharides such as starch and starch derivatives can be used, and the resin can be used in a liquid or semi-solid form such as a solution or dispersion, a solid form such as a granular or fibrous form, or a molten form.
  • the porous body for supporting the catalyst component to be added to the tobacco element is not particularly limited as long as it effectively exhibits the activity of the catalyst component and can improve the operability and yield of the addition to the tobacco element. It is a porous material such as activated carbon, silica gel, alumina, zeolite, silica, silica-alumina, nickel-alumina, etc. A porous material that is not powdery is preferred. These porous bodies can be used alone or in admixture of two or more.
  • the specific surface area of the porous body, the catalyst components can be selected a wide range forces can effectively carry, for example, 100 ⁇ 4000m 2 g s preferably 300 ⁇ 3000m 2 / g (e.g. 400 ⁇ 2000m 2 / g) in the range of about Force can be selected.
  • the particle size of the porous body is 90% by weight or more, for example, 10 mesh pass 70 mesh on, preferably 10 mesh pass 50 mesh on, particularly preferably 10 mesh pass 32 mesh on, more preferably 14 mesh pass 25 Mesh on.
  • the particulate matter is a particulate matter having a particle size in a range that passes through 10 mesh and does not pass through 70 mesh (10 mesh, 70 mesh on). Such a granular material can lower the ventilation resistance value, and can further exert the effect of the present invention.
  • Preferred porous materials include activated carbon and silica gel strength S.
  • the activated carbon of the present invention includes various activated carbons such as fruit shell charcoal such as coconut shell and talmi husk, plant activated carbon such as charcoal, high polymer such as phenol resin, rayon, polyvinylidene chloride, acrylic resin and cellulose. And mineral activated carbon using mineral raw materials such as synthetic resin or polymer activated carbon, lignite, lecite, anthracite, coke, coal or petroleum pitch. One or more of these activated carbons can be used. Of these activated carbons, plant activated carbon such as coconut shell activated carbon is often used.
  • non-volatile chemicals for example, acid components such as organic acids or inorganic acids, base components such as organic bases or inorganic bases, are used to enhance the selective removal properties against harmful components as necessary. May be carried.
  • the activated carbon in the present invention may be fibrous, but is often used in a granular form.
  • a granular material may be a granulated material granulated using a binder, such as granulated activated carbon.
  • Specific surface area of the activated carbon for example, 200 ⁇ 4000M 2 preferably 300 ⁇ 3000 m 2 g, more preferably about 500-250 Om 2 Zg, may be selected from the 1000 ⁇ 2000m 2 / g.
  • the average particle size of the silica gel of the present invention can be appropriately selected depending on the application. For example, 90% by weight or more is 10 mesh pass 70 mesh on, preferably 10 mesh pass 50 mesh on, particularly preferably 10 mesh pass 32 mesh on. More preferably, 14 mesh pass and 25 mesh on may be used.
  • the average pore diameter (average pore diameter) of the silica gel is, for example, 0.5 to: I000 nm, preferably:! To 800 nm, more preferably about 3 to 600 nm.
  • a relatively large average pore diameter for example, an average pore diameter of 20 nm or more (for example, about 20 to 90 Onm), preferably 25 nm or more (for example, about 25 to 700 nm), more preferably 30 nm or more ( For example, it may be about 35 to 650 nm), particularly 40 nm or more (for example, about 45 to 600 nm), usually 20 to 500 nm (for example, 25 to 400 nm, preferably about 30 to 350 nm).
  • silica gel having a relatively small pore diameter is often used for adsorption of gas or the like.
  • the use of silica gel having a large pore diameter makes it possible to further improve carbon monoxide removability in combination with the catalyst component.
  • the specific surface area of silica gel is, for example, 0. 5 m 2 / g or more (e.g., about l ⁇ 1200m 2 / g), preferably 1. 5 m 2 / g or more (e.g., 2 ⁇ 1000m 2 / g About 5 ⁇ 2 ⁇ (for example, about 6 to 800 m 2 Zg), usually 3 to 300 m 2 Zg (for example, 4 to 200 m 2 Zg, preferably 5 to: 150 m 2 More preferably 6 to: L00m 2 / g, especially about 7 to 80m 2 / g).
  • the average pore volume of the silica gel may be, for example, about 0.1 to 2 mL / g, preferably about 0.3 to I. 8 mL / g, and more preferably about 0.5 to about 1.5 mLZg. .
  • the equilibrium moisture content of silica gel at a temperature of 22 ° C and 60% RH is, for example, 0. It may be about 01 to 50%, preferably about 0.1 to 30%.
  • the equilibrium moisture content power at a temperature of 22 ° C. and 60% RH for example, 0.01 to 10% (for example, 0.03 to 8%), preferably 0.05 to 7% (eg, E.g., 0.18-5%), more preferably 0.1-3% (e.g., 0.15-2.5%), especially 0.5-2%,
  • about 0.01 to 5% silica gel is preferably used.
  • the catalyst component added to the tobacco element is composed of a metal compound and a gold catalyst, and the catalyst component is a coprecipitate (or coexisting substance) of the metal compound and the gold catalyst, and a carrier composed of the metal compound.
  • the catalyst component may be composed of a gold catalyst as a catalytically active component carried on this carrier.
  • Gold catalysts are often dispersed in the form of fine particles and coprecipitated (coexisting) or supported.
  • Examples of the metal compound constituting the catalytically active component include various metal compounds, for example, oxides, carbonates, bicarbonates, etc., as long as the activity of the gold catalyst is effectively expressed, such as oxides of transition metals. It is preferable. Transition metal oxides include, for example, Sc, Y, lanthanoid metals and actinoid metals, etc. Periodic Table 3 Group X metals, Ti, Zr, etc. Periodic Table 4A metals, V, etc.
  • a preferred metal compound is a compound that has nonflammability that can maintain a solid state even during smoking or after smoking, and does not generate harmful components by smoking.
  • Particularly preferred metal compounds include Group 8 metals of the periodic table (eg, iron, cobalt, nickel, etc.) or oxides of titanium.
  • the metal compound is supported on the porous body in the form of fine particles supporting a gold catalyst.
  • the particle size of the gold catalyst (particularly gold fine particles) constituting the catalyst component can be selected within a range where the catalytic activity can be effectively expressed, for example, a range force of about 30 nm from the size of the gold atom.
  • the particle size of the gold fine particles is, for example, 30 nm or less (for example, about 0.5 to 30 nm), preferably 20 nm or less (for example, 1 to 20 nm), and more preferably:! To 1 Onm (for example, 1 to 5 nm) There are many cases where it is about.
  • the amount of the catalytically active component used is within the range in which the activity of the gold catalyst is expressed, for example, the amount of gold atoms is 0.1. -: 15%, preferably 1-: 10%, more preferably about 2-8% (for example, 3-6%). If the amount of gold atoms (supported amount) is less than 0.1%, carbon monoxide has a small oxidative removal ability, and even if it exceeds 15%, gold atoms may be too close together and aggregate to form coarse particles. In many cases, the carbon monoxide removal ability is not so improved. [0041]
  • the gold catalyst is preferably supported in a finely divided and uniformly dispersed state on a catalyst carrier composed of a metal compound.
  • the amount of gold atoms (supported amount) “%” means the ratio of gold atoms to the total metal components of the catalyst component, and can be calculated as follows.
  • the metal components include carbon. It is. ,
  • the catalyst component is composed of ⁇ moles of metal oxide Fe2 03 compound (support etc.) and gold m (g) held or supported on this metal compound (support etc.) [Ie Au m (g) / (n X Fe2 03)]
  • the ratio of the catalyst component to the porous body can be selected within a range power that can effectively exhibit the catalytic activity, and for example, 1% by weight or more (for example, 1 to 50% by weight), preferably 3% by weight or more (for example, 3 to 25%). % By weight), more preferably 5% by weight or more (for example, 5 to 20% by weight). If the ratio of the catalyst component to the porous material is less than 1% by weight, the carbon monoxide removal ability is not sufficient.
  • the porous body and the catalyst component may contain an additive such as a dispersant which may be surface-treated with a dispersant or the like.
  • surface treatment such as oxidation treatment may be applied to metal compounds (supports, etc.).
  • the amount of the porous material carrying the catalyst component to the cigarette filter can be selected according to the type of catalyst component and usage, and is 1 to 500 parts by weight, preferably 5 to 100 parts by weight for the filter material. About 200 parts by weight (for example, 10 to 100 parts by weight). If the amount of the porous material carrying the catalyst component is small, the removal efficiency for carbon monoxide in the tobacco smoke is lowered, and if it is too much, the taste and the lifting workability of the filter may be impaired.
  • the support of the catalyst component on the porous body is not particularly limited as long as the catalyst component can be effectively supported on the porous body.
  • chlorauric acid HuC14
  • a metal corresponding to the metal oxide can be supported.
  • Inorganic acid salt A porous material is added to and suspended in a mixed aqueous solution (nitrate, etc.), and the suspension is added to an aqueous solution of an inorganic base such as alkali metal carbonate (sodium carbonate).
  • the porous body on which the catalyst component is supported can be washed with water, dried, and then fired.
  • a mixed aqueous solution of chloroauric acid and a metal inorganic acid salt corresponding to a metal oxide is added to an aqueous solution of an inorganic base in which a porous body is suspended in advance, and a catalyst is formed on the porous surface.
  • a method may be employed in which the components are coprecipitated and supported, and then the porous material on which the catalyst component is supported is washed with water, dried, and then fired in air.
  • the porous body may be loaded with one component of the metal compound and the gold catalyst and then loaded with the other component.
  • gold (ultra) fine particles are often supported by co-precipitation or precipitation (or deposition) on the surface of the porous body and then firing. Les.
  • the catalyst component supported on the L-form shows catalytic activity (oxidation activity) against carbon monoxide even at around room temperature.
  • the carbon monoxide removal capability can be further enhanced when the porous body has a structure consisting of a mixture of a support having a catalyst component supported on activated carbon and a support having a catalyst component supported on silica gel.
  • a mixture of a catalyst component in which gold fine particles are supported on iron oxide using activated carbon as a support and a catalyst component in which gold particles are supported on titanium oxide as a silica gel support is further removed. Performance can be improved.
  • a carrier made of a porous material carrying a catalyst component in the middle may be mixed with another adsorbent.
  • a porous body not supporting a catalyst component can be suitably used as the adsorbent to be mixed.
  • Tobacco resistance of the above tobacco [Peace Light Box (Registered Trademark No. 2122839) (made by Japan Tobacco Sangyo Co., Ltd.)] and cigarette samples made using the same And measured.
  • the airflow resistance was measured by using an automatic airflow resistance measuring instrument (Filtona, FTS300) when a pressure loss (mmWG) was passed through the cigarette sample at a flow rate of 17.5 mlZ seconds.
  • a cigarette sample was attached to a piston-type constant-volume automatic smoker (single type manufactured by Boulder Wald), smoked at a flow rate of 17.5 ml / second, smoking time 2 seconds Z times, and smoking frequency 1 time.
  • the mainstream smoke from the first to seventh smoking was collected in a bag, and the carbon monoxide concentration was analyzed with a CO / C02 analyzer (CO / C02-Analyser C-24 manufactured by Boulder Wald). From this analysis result, the amount of carbon monoxide contained in the mainstream smoke from the 1st to the 7th was calculated and used as the amount of carbon monoxide per cigarette sample.
  • the 9 mm space created by this glass tube was filled with 20 Omg of the activated carbon.
  • the glass tube was plugged using the previously cut short piece, that is, the 14 mm filter part (llOmg). Sealing tape was also applied to the connection between the glass tube and the filter to seal it. Accordingly, the filter length of the cellulose diacetate crimped fiber tow is 25 mm.
  • the extended 9 mm portion between the filters was filled with activated carbon particles. The charged amount of activated carbon particles was 200 mg per cigarette.
  • the cigarette sample was measured for the ventilation resistance and the amount of carbon monoxide. And the obtained carbon monoxide removal rate was computed by the said formula. The results are shown in Table 1.
  • a target product for evaluating the carbon monoxide removal rate a tobacco sample prepared in the same manner except that activated carbon was not used was used.
  • silica gel was used.
  • silica gel white silica gel particles commercially available from Kishida Chemical Co., Ltd. were used. The particle size of this silica gel was 98.2% at 10 mesh pass and 40 mesh on.
  • silica gel was filled between the filters. The filling amount of silica gel was 200 mg per cigarette.
  • the cigarette sample was measured for the ventilation resistance and the amount of carbon monoxide. And the reduction rate of the obtained carbon monoxide carbon was computed by the said formula. The results are shown in Table 1. To evaluate the carbon monoxide removal rate, tobacco samples prepared in the same manner except that silica gel is not used are used. It was.
  • Cellulose acetate fiber tow (total denier 40000) composed of Y-shaped filaments (2.2 denier) is opened to a width of about 20cm, and is used to produce a cigarette filter for cigarette smoke (Howie, Germany)
  • KDF2 / AC1 / AF1 activated carbon powder addition device
  • iron oxide powder supporting 5% gold fine particles (average particle size 5 nm) as a catalytic active component per 100 parts by weight of the opened tow (average (Particle size 250 ⁇ m) 50 parts by weight were evenly sprayed when the filter was lifted, and the tow was fed to the paper mill, and the tow was lifted at a speed of 400 m / min.
  • the filter rod was cut to a length of 102 mm with a cutter.
  • the obtained filter was further cut to a length of 25 mm to produce a filter sample.
  • a cellulose acetate fiber tow (total denier 37000) composed of Y-shaped filaments (3.0 denier) to a width of about 25 cm
  • the activated carbon powder addition device of YF, Kyuni Co., Ltd., KDF2 / AC1 / AF1 apply 190 parts by weight of catalyst-supported activated carbon to 100 parts by weight of the opened tow evenly when lifting the filter.
  • the tow was fed to a paper punching device, the tow was lifted at a speed of 400 m / min using a paper roll, and the obtained filter rod was cut into a length of 100 mm with a cutter.
  • the obtained filter was further cut to a length of 20 mm to produce a filter sample.
  • active carbon (average particle diameter 450 ⁇ m, specific surface area 1000 ⁇ 2 / %) was used.
  • aqueous solution D 6.5 g of sodium carbonate (Na2C03) was dissolved in 500 ml of distilled water and heated to 70 ° C. with stirring (aqueous solution D). While stirring at 70 ° C, the dispersion C was added to the aqueous solution D at a stretch and mixed, and the temperature was kept at 70 ° C and stirred for 1 hour.
  • the activated carbon supported catalyst of (Au / Fe 2 0 3 / active carbon) 200 mg was filled between the filter, to prepare a tobacco sample.
  • the cigarette sample was measured for the ventilation resistance and carbon monoxide content.
  • the removal rate of the obtained carbon monoxide was computed by the said formula.
  • Table 2 As a target product for evaluating the carbon monoxide removal rate, a tobacco sample prepared in the same manner except that no catalyst was used was used was used.
  • the silica gel supported catalyst (Au / Ti0 2 / silica gel) 200 mg was filled between the filter, to prepare a tobacco sample.
  • the cigarette sample was measured for the ventilation resistance and the amount of carbon monoxide.
  • the obtained carbon monoxide removal rate was computed by the said formula. The results are shown in Table 2.
  • a target product for evaluating the carbon monoxide removal rate a tobacco sample prepared in the same manner except that no catalyst was used was used was used.
  • Supported catalyst blend (Au / Fe 2 0 3 / activated carbon) + (Au / Ti0 2 / silica gel)
  • Example 2 Each lOOmg (total 200 mg) of the supported catalyst prepared in Example 1 and Example 4 was filled between filters in the same manner as in Comparative Example 1 to prepare a tobacco sample.
  • the cigarette sample was measured for the ventilation resistance and the amount of carbon monoxide.
  • the obtained carbon monoxide removal rate was computed by the said formula. The results are shown in Table 2.
  • a target product for evaluating the carbon monoxide removal rate a tobacco sample prepared in the same manner except that no catalyst was used was used was used.
  • the carbon monoxide removal rate is higher in the examples than in the comparative examples, and the carbon monoxide removal performance is higher. Moreover, it is suitable as a cigarette filter having a low ventilation resistance value.
  • the cigarette filter of the present invention can be efficiently applied to carbon monoxide contained in cigarette smoke, and can be applied to low tar cigarettes and the like because it does not increase ventilation resistance.

Abstract

It is intended to provide a cigarette filter which has a low resistance to a gas flow and excellent in retaining the cigarette taste while effectively removing carbon monoxide from cigarette smoke and reducing the carbon monoxide flow into the oral cavity of a smoker. A cigarette filter comprising a cigarette smoke filter consisting of at least three parts, wherein a granular support made of a porous material carrying a catalytic component is provided in the intermediate part and the catalytic component comprises a metal compound and gold micrograins. Concerning the grain size of the granular support, it contains 90% by weight or more of grains passing though a 10-mesh sieve but not passing through a 70-mesh sieve (10-mesh pass and 70-mesh on).

Description

明細書  Specification
たばこフィルタ Cigarette filter
技術分野 Technical field
[0001]  [0001]
本発明は、喫煙者の口腔内への一酸化炭素流入量を低減し、喫煙者の健康に及ぼす悪影響を 軽減できるたばこ煙用フィルターおよびその製造方法に関する。  The present invention relates to a cigarette smoke filter that can reduce the amount of carbon monoxide inflow into the mouth of a smoker and reduce adverse effects on the health of the smoker, and a method for producing the same.
背景技術 ' Background Technology ''
[0002]  [0002]
近年、健康に及ぼすたばこの影響との関連から、先進諸国を中心に喫煙時の口腔内への有害 成分の流入量 (デリバリー量と称する場合がある）を低減させるための種々の検討がなされている。 たばこ煙成分のうち、たばこの燃焼時に発生する一酸ィ匕炭素成分は、血液中のヘモグロビンとの 結合力が強く、人体への悪影響が懸念される成分の 1つである。そのため、たばこ煙中の一酸化 炭素成分を除去することが重要な課題である。  In recent years, various studies have been conducted to reduce the inflow of harmful components into the oral cavity during smoking (sometimes referred to as delivery), mainly in developed countries, in relation to the effects of tobacco on health. Yes. Among cigarette smoke components, the carbon monoxide component generated during the burning of cigarettes has a strong binding power to hemoglobin in the blood, and is one of the components that may have adverse effects on the human body. Therefore, the removal of carbon monoxide components from tobacco smoke is an important issue.
[0003]  [0003]
—酸化炭素を除去する方法として、特開昭 60— 216843号公報 (特許文献 1)には、酸化アルミ ニゥム粒子の表面に白金やパラジウムを担持させた触媒を用いて、たばこ煙中の一酸化炭素を二 酸化炭素に酸化して除去する方法が提案されている。この触媒は、比較的高温のたばこ煙が触媒 に接触すると、一酸化炭素に対する酸化能が発現するものの、室温付近では一酸ィヒ炭素に対す る酸化能が低下し、たばこ煙中の一酸化炭素を効率よく除去することが困難である。また、一酸ィ匕 炭素の除去能が喫煙時の外部環境、特に外気温に大きく左右される。  — As a method for removing carbon oxide, Japanese Patent Laid-Open No. 60-216843 (Patent Document 1) describes the use of a catalyst in which platinum or palladium is supported on the surface of aluminum oxide particles to monoxide in cigarette smoke. A method for removing carbon by oxidizing it to carbon dioxide has been proposed. This catalyst develops its ability to oxidize carbon monoxide when relatively high-temperature cigarette smoke comes into contact with the catalyst, but its ability to oxidize carbon monoxide decreases near room temperature, and the monoxide is oxidized. It is difficult to remove carbon efficiently. In addition, the ability to remove carbon monoxide and carbon greatly depends on the external environment during smoking, especially the outside temperature.
[0004]  [0004]
一方、特開昭 60— 28823号公報 (特許文献 2)には、マンガン酸ィ匕物にパラジウム微粒子を担 持させた触媒粉末を充填したたばこホルダーを用い、たばこ煙中の一酸化炭素を二酸化炭素に 酸化して除去する方法が開示されている。この方法は、一酸ィ匕炭素に対する酸化能が室温程度で も比較的高い。また、この先行文献にはフィルタやシガレットホルダーに充填使用するたばこ煙中 COの低減用に使用できることが記載されている。しかし、前記触媒成分を用いる方法では、たばこ の喫味が損なわれる虞がある。  On the other hand, JP-A-60-28823 (Patent Document 2) uses a cigarette holder filled with catalyst powder in which palladium fine particles are supported on manganic acid soot, and carbon monoxide in cigarette smoke is reduced to carbon dioxide. A method of oxidizing and removing to carbon is disclosed. This method has a relatively high ability to oxidize carbon monoxide and carbon even at room temperature. In addition, this prior document describes that it can be used for reducing CO in cigarette smoke used for filling filters and cigarette holders. However, in the method using the catalyst component, the taste of tobacco may be impaired.
[0005] さらに、特開平 9— 140370号公報 (特許文献 3)には、遷移金属酸化物担体に金微粒子を担持 させた触媒を用いて、たばこ煙中の一酸化炭素を二酸化炭素にに酸化して除去する方法が提案 されている。この触媒は、一酸化炭素 COに対する酸化能が比較的高いが、触媒粉末がかなり微 粉末になりやすレ、ため、たばこ煙用フィルターや葉たばこに添加した場合、通気抵抗が大きくなり すぎたり、添加する場合の操作適性や歩留りが必ずしも良くなレ、。 [0005] Further, JP-A-9-140370 (Patent Document 3) discloses that carbon monoxide in cigarette smoke is oxidized and removed to carbon dioxide using a catalyst in which gold fine particles are supported on a transition metal oxide support. A method to do this has been proposed. Although this catalyst has a relatively high oxidizing ability for carbon monoxide CO, the catalyst powder is likely to become very fine, so when added to a cigarette smoke filter or leaf tobacco, the ventilation resistance becomes too large or added. When you do, the suitability for operation and the yield are not necessarily good.
[0006]  [0006]
さらに、特開平 11一 235169号公報 (特許文献 4)ではたばこを構成する要素 (葉たばこ又はた ばこ煙用フィルター）に、触媒成分を担持した多孔質体を添加する技術が開示されている。この先 行文献には触媒成分としては、金属化合物 (酸化鉄、酸化コバルトおよび酸化ニッケルなどの遷移 金属酸化物など)と、金触媒 (平均粒径 0. l〜10nmの金微粒子）とで構成され、金原子の割合は、 触媒成分の金属成分全体に対して 0.：!〜 15%程度であることが記載されている。また、触媒成分 の担持量は、多孔質体 (活性炭、シリカゲル、アルミナなど）に対して 1重量％以上であることが記 載されている。また紙巻きたばこ (シガレット)は、葉たばこ部と、この葉たばこ部に装着されたたば こ煙用フィルタ一とで構成されてレ、ることも記載されている。この技術では、多孔質材料は、活性炭、 シリカゲル、アルミナ力 選択されたものが含まれることが記載されてレ、る。  Further, Japanese Patent Application Laid-Open No. 11-235169 (Patent Document 4) discloses a technique in which a porous material carrying a catalyst component is added to an element (leaf tobacco or tobacco smoke filter) constituting tobacco. In this prior document, the catalyst component is composed of a metal compound (transition metal oxides such as iron oxide, cobalt oxide and nickel oxide) and a gold catalyst (gold fine particles having an average particle size of 0.1 to 10 nm). It is described that the proportion of gold atoms is about 0.:! To 15% with respect to the entire metal component of the catalyst component. Further, it is described that the supported amount of the catalyst component is 1% by weight or more with respect to the porous body (activated carbon, silica gel, alumina, etc.). It is also described that cigarettes (cigarettes) are made up of a leaf tobacco part and a cigarette smoke filter attached to the leaf tobacco part. In this technique, it is described that the porous material includes activated carbon, silica gel, and alumina force.
[0007]  [0007]
この技術によれば添加する場合の操作適性や歩留まりは改善され、また通気抵抗も大きくなりす ぎることはない。しかしながら、特許文献 3の一酸化炭素低減量に比べて、一酸化炭素低減量が低 くなり実施例に記載されているもので最も優れた態様のものでも一酸化炭素のディバリー量は 0. 6 5であり、一酸ィ匕炭素除去率に換算すると 35%である。  According to this technique, the suitability for operation and the yield when added are improved, and the ventilation resistance does not become too high. However, the carbon monoxide reduction amount is lower than that of Patent Document 3, and the carbon monoxide diverging amount is 0.6 even in the most excellent embodiment described in the examples. This is 35% in terms of carbon monoxide removal rate.
このように通気抵抗と一酸化炭素除去性能は背反二律の関係にあり、一酸化炭素除去性能が髙 レ、ものは通気抵抗が優れず、逆に通気抵抗に優れるものは一酸化炭素除去性能が高くない。 In this way, ventilation resistance and carbon monoxide removal performance are in a trade-off relationship, with carbon monoxide removal performance being poor, those with poor ventilation resistance and conversely those with excellent ventilation resistance are carbon monoxide removal performance. Is not expensive.
[0008]  [0008]
通気抵抗はたばこの喫味は喫煙時の満足感に深く影響し、また一酸化炭素は喫煙者の健康の ためになるべく除去することが望ましい。し力しな力 ¾通気抵抗が低くかつ一酸化炭素除去性能が 高いたばこフィノレタは存在していなかった。  Ventilation resistance has a strong impact on tobacco smoking, and carbon monoxide should be removed as much as possible for smokers' health. There was no cigarette finoleta with low airflow resistance and high carbon monoxide removal performance.
[特許文献 1]特開昭 60— 216843号公報 (特許請求の範囲） [Patent Document 1] JP-A-60-216843 (Claims)
[特許文献 2]特開昭 60― 28823号公報 (特許請求の範囲） [特許文献 3]特開平 9— 140370号公報 (特許請求の範囲） [Patent Document 2] JP-A-60-28823 (Claims) [Patent Document 3] JP-A-9-140370 (Claims)
[特許文献 4]特開平 11— 235169号公報 (要約、特許請求の範囲、実施例） [Patent Document 4] JP-A-11-235169 (Abstract, Claims, Examples)
発明の開示 Disclosure of the invention
[0009]  [0009]
本発明は、たばこ煙中の一酸化炭素を有効に除去でき、かつ通気抵抗の変化がすくなレ、たばこ フィルタを提供する。'  The present invention provides a cigarette filter that can effectively remove carbon monoxide in cigarette smoke and has a quick change in ventilation resistance. '
[0010]  [0010]
本発明者らは、鋭意検討した結果、少なくとも 3個の部分カゝらなるたばこフィルタとして、このたば こフィルタの中間部に触媒活性成分としての金属化合物および金触媒が担持された多孔質体から なる担持体を配した構造としたたばこフィルタがー酸ィ匕炭素を高い効率で除去できかつ通気抵抗 を損なわな!/ヽことを見出し本発明を完成した。  As a result of intensive studies, the present inventors have determined that a porous filter having a metal compound as a catalytically active component and a gold catalyst supported on an intermediate portion of the tobacco filter as a tobacco filter comprising at least three partial covers. The present invention has been completed by finding that a cigarette filter having a structure comprising a support made of a material can efficiently remove carbonic acid carbon and does not impair ventilation resistance.
すなわち本努明のたばこフィルタを構成する中央部分に、触媒成分を担持する多孔質体が添加 されたたばこフィルタあって、前記触媒成分が金属化合物と金触媒とで構成されてレヽる前記触媒 成分は、金属化合物と金微粒子とで構成することができ、金触媒は金属化合物に担持されていて あよい。  In other words, the cigarette filter in which a porous body supporting a catalyst component is added to the central portion constituting the cigarette filter of the present effort, and the catalyst component is composed of a metal compound and a gold catalyst. Can be composed of a metal compound and gold fine particles, and the gold catalyst may be supported on the metal compound.
[0011]  [0011]
本発明のたばこフィルタの中間部に配置される触媒成分を担持させた多孔質体からなる担持体 は粒状成分であっても良い。そして、たばこフィルタを構成する両端部は通常のフィルタ素材であ つてもよい。  The carrier made of a porous material carrying the catalyst component disposed in the middle part of the tobacco filter of the present invention may be a particulate component. Further, both end portions constituting the cigarette filter may be a normal filter material.
本発明のたばこフィルタでは中間部の通気抵抗値に対して両端部の通気抵抗値が大きレヽもので あっても良い。 In the cigarette filter of the present invention, the airflow resistance value at both ends may be large relative to the airflow resistance value at the intermediate part.
[0012]  [0012]
本発明には、セルロースエステル繊維を含むフィルタロッドを両端部に配した構造であっても良く 前記多孔質体が、活†生炭、シリカゲル、アルミナから選択された少なくとも一種であり、前記角虫媒成 分力 酸化鉄、酸ィ匕チタン、酸化コバルトおよび酸化ニッケルから選択された少なくとも一種の金 属化合物 (又は担体)と、この金属化合物 (又は担体)に担持された金触媒であってもよい。金属化 合物は酸化物であってもよい。特に、金属化合物は酸ィヒ鉄または酸化チタンであってもよい。 触媒成分では金属化合物と多孔質体の組み合わせは、金属化合物が酸化鉄で多孔質体が活 性炭、あるいは金属化合物が酸ィ匕ニッケルで多孔質体がシリカゲノレのものであってもよい。 The present invention may have a structure in which filter rods containing cellulose ester fibers are arranged at both ends. The porous body is at least one selected from live raw charcoal, silica gel, and alumina, At least one metal compound (or support) selected from iron oxide, titanium oxide, cobalt oxide and nickel oxide, and a gold catalyst supported on this metal compound (or support) Good. The metal compound may be an oxide. In particular, the metal compound may be iron iron or titanium oxide. As a catalyst component, the combination of a metal compound and a porous material is that the metal compound is iron oxide and the porous material is active. The charcoal or the metal compound may be acid nickel and the porous body may be silicagenole.
[0013]  [0013]
触媒成分を担持した担持体が少なくとも活性炭に触媒成分を担持した担持体を含むものであって もよレヽ。触媒成分を担持された多孔質体が活性炭に触媒成分を担持した担持体とシリカゲルに触 媒成分を担持した担持体の混合物であってもよレ、。 The carrier carrying the catalyst component may include at least a carrier carrying the catalyst component on activated carbon. The porous body carrying the catalyst component may be a mixture of a carrier carrying the catalyst component on activated carbon and a carrier carrying the catalyst component on silica gel.
図面の簡単な説明 Brief Description of Drawings
図 1は本発明のたばこフィルタを用いたたばこの断面図である。図 1において、番号 1が示す部分 はたばこの葉の部分である。番号 2が示す部分はたばこの卷紙である。番号 3と番号 4の部分から 構成される番号 5の部分が本亮明のたばこフィルタである。番号 3で示される部分が「両端部」であ る。また番号 4で示される部分が「中間部」である。 FIG. 1 is a sectional view of a cigarette using the cigarette filter of the present invention. In Figure 1, the part indicated by number 1 is the tobacco leaf part. The part indicated by number 2 is a cigarette paper. The number 5 part consisting of the number 3 and number 4 parts is the Ryoaki tobacco filter. The part indicated by the number 3 is “both ends”. The part indicated by the number 4 is an “intermediate part”.
図 2本発明のたばこフィルタを設けたたばこの部分透視図である。図 1と同様に、番号 1が示す部 分はたばこの葉の部分である。番号 2が示す部分はたばこの巻紙である。番号 3で示される部分が 「両端部」である。また番号 4で示される部分が「中間部」である。 2 is a partial perspective view of a cigarette provided with the cigarette filter of the present invention. As in Figure 1, the part indicated by number 1 is the tobacco leaf. The part indicated by number 2 is a cigarette paper. The part indicated by the number 3 is “both ends”. The part indicated by the number 4 is an “intermediate part”.
発明を実施するための最良の形態 BEST MODE FOR CARRYING OUT THE INVENTION
[0014]  [0014]
[たばこフィルタ]  [Tobacco filter]
以下に本発明の少なくとも 3個の部分から構成されてレ、るたばこフィルタについて説明する。 本発明のたばこフィルタは少なくとも 3個の部分力も構成されてレ、ることを特徴とする。すなわち、 たばこフィルタが少なくとも両端部、中間部の 3個の部材力 構成されており、中間部 (すなわち中 央の部分）に本発明の担持体が配置されている構造を取る。図一 1に本発明のたばこフィルタの 断面図を図示する。  Hereinafter, a cigarette filter comprising at least three parts of the present invention will be described. The cigarette filter of the present invention is characterized by comprising at least three partial forces. That is, the cigarette filter has a structure in which at least both end portions and an intermediate portion have three member forces, and the carrier of the present invention is disposed in the intermediate portion (that is, the central portion). Figure 1 shows a cross-sectional view of the tobacco filter of the present invention.
図一 1にお！/、ては、図の向って右側 (たばこ葉部側と反対側）がたばこの吸レヽ口側に相当する。 Figure 1 1! The right side of the figure (on the side opposite to the tobacco leaf side) corresponds to the tobacco outlet side.
[0015]  [0015]
一般にたばこフィルタはフィルタトウを引き揃え、トリァセチンなどの可塑剤で固着したフィルタロッ ドを巻き紙などで卷レ、て形成する。図一 1にお!/、て 1はたばこの葉の部分に相当レたばこの葉の 部分は卷紙 2で卷かれたロット状となっている。たばこの葉部の先に吸い口に当た,るたばこフィルタ が接合されている。本発明のたばこフィルタは図— 1に示すとおり 3個の部分から構成されている。 本発明のたばこフィルタでは両端部にフィルタロッドで形成した部分を配置し、中央部にはフィル タロッドではなぐ本発明の担持体を配置する構造を取る。 ^端部にフィルタロッドで形成した部分 は図― 1では 3の両端部として示された部分に相当する。図一 1の 3の両端部の中央に図一 1で示 した 4の中間部を配している。本発明においては、図一 1において 4の中間部として示された部分 に触媒成分を担持した多孔質体からなる担持体が配置されることが特徴である。 In general, a cigarette filter is formed by aligning filter tows and curling the filter rod fixed with a plasticizer such as triacetin with a wrapping paper. In Fig. 1! /, 1 is equivalent to the tobacco leaf part. A cigarette filter hitting the mouthpiece is joined to the tip of the tobacco leaf. The cigarette filter of the present invention is composed of three parts as shown in FIG. In the cigarette filter of the present invention, portions formed by filter rods are arranged at both ends, and a filter is formed at the center. It takes a structure in which the carrier of the present invention is arranged on the tarod. ^ The part formed by the filter rod at the end corresponds to the part shown as 3 both ends in Figure-1. The middle part of 4 shown in Fig. 1 is placed at the center of both ends of 3 in Fig. 1. The present invention is characterized in that a support made of a porous material supporting a catalyst component is disposed in a portion shown as an intermediate portion 4 in FIG.
[0016]  [0016]
図一 2には本発明のたばこフィルタを配したたばこの部分透視図を示す。図 _ 2に示した通り、本 発明のたばこフィルタでは中間部に粒状体の担持体を配してもよい。図一 2に示した通り粒状体は 本発明に中間部にフィルタロッドで形成した両端部に挟み込まれ固定される。  FIG. 12 shows a partial perspective view of a cigarette provided with the cigarette filter of the present invention. As shown in FIG. 2, in the cigarette filter of the present invention, a granular carrier may be disposed in the middle part. As shown in FIG. 12, the granular material is sandwiched and fixed between both ends formed by filter rods in the intermediate portion in the present invention.
本発明のたばこフィルタの径としては従来のたばこフィルタの径と同様のものが好ましぐ円周で 1 4mmから 25mmのものを用いることができる。  The diameter of the cigarette filter of the present invention is preferably the same as that of the conventional cigarette filter, and a diameter of 14 to 25 mm can be used.
両端部の通気抵抗値は、担持体を充填された中間部の通^抵抗値よりも高くするようにする。 The airflow resistance value at both ends is set higher than the airflow resistance value of the intermediate part filled with the carrier.
[0017]  [0017]
本発明のたばこフィルタの構造を取った場合に、通気抵抗が低くかつ一酸化炭素除去性能が高 レ、たばこフィルタが得られる理由は明確には解ってレ、なレ、が、本発明のたばこフィルタの構造を取 ることで通気抵抗が低くかつ一酸化炭素除去性能が高いたばこフィルタが得られる。  When the cigarette filter structure of the present invention is adopted, the reason why the cigarette filter can be obtained clearly has a low ventilation resistance and a high carbon monoxide removal performance. By adopting the filter structure, a cigarette filter with low ventilation resistance and high carbon monoxide removal performance can be obtained.
推定のひとつとして、通気抵抗値が高い場合、すなわち気体が通過する場合の圧力損失が高い 場合には、触媒による酸化時間が充分にあるのに対して、通気抵抗値を低くした場合は十分な触 媒反応時間が得られないために一酸化炭素除去性能が低下することが考えられる。これに対して 本発明のように両端部と中間部で通気抵抗値に差を持たせた場合には触媒が反応する時間が得 られるようになるとレ、う可能性がある。  As one estimate, if the ventilation resistance is high, that is, if the pressure loss when the gas passes is high, the oxidation time by the catalyst is sufficient, but if the ventilation resistance is low, it is sufficient. Since the catalyst reaction time cannot be obtained, the carbon monoxide removal performance may be reduced. On the other hand, if there is a difference in the airflow resistance value between the both end portions and the intermediate portion as in the present invention, there is a possibility that the reaction time of the catalyst can be obtained.
[0018]  [0018]
また別の推定として、触媒は金属担持された微粒子の状態でセルロースアセテート繊維に付着し てレヽる場合は、触媒活性が髙レ、ものである力 多孔質の担持体に担持された状態でセルロースァ セテート繊維中に分散された場合は触媒性能が低下する。この理由としては、一酸化炭素が触媒 と接触する前にセルロースアセテート繊維や多孔質体と吸着脱着を繰り返し、結果として触媒に到 達するまでの時間が長くなるため反応時間が長くなり、一酸化炭素除去性能 (すなわち触媒の酸 化性能)が低下する。 ·  As another estimate, when the catalyst adheres to the cellulose acetate fiber in the form of metal-supported fine particles, the catalyst activity is low, and the cellulose is in a state of being supported on a porous support. When dispersed in the cementate fiber, the catalyst performance decreases. The reason for this is that the carbon monoxide is repeatedly adsorbed and desorbed with the cellulose acetate fiber and porous body before coming into contact with the catalyst. Removal performance (ie, oxidation performance of the catalyst) decreases. ·
これに対して、本発明のたばこフィルタの構造を取った場合には、触媒を担持された多孔質体 (担持体）はセルロースアセテート繊維中に分散されていないので、セルロースアセテート繊維の 一酸化炭素の吸着脱着力 ぐ結果的に多孔質体による一酸ィヒ炭素の吸着脱着しか生じないた め、多孔質体に担持した場合でも、触媒'性能が低下せず、一酸化炭素除去性能が保たれるという 可能性もある。 On the other hand, when the cigarette filter structure of the present invention is adopted, the porous body carrying the catalyst is used. Since the (support) is not dispersed in the cellulose acetate fiber, the adsorption and desorption force of the carbon monoxide of the cellulose acetate fiber results in only the adsorption and desorption of carbon monoxide by the porous material. Even when the catalyst is supported on the carbonaceous material, there is a possibility that the performance of the catalyst is not lowered and the carbon monoxide removal performance is maintained.
[0019]  [0019]
更にまた別の推定として、セルロースアセテート繊維中に触媒成分が分散してレ、る場合と、多孔 質体に担持された触媒成分がセルロースアセテート繊維中に分散されてレ、る場合とでは、たばこ 煙中の成分と触媒成分あるいは担持体、セルロースアセテート繊維との相互作用の結果、触媒性 能が低下する可能性があり、中間部に配置することで多孔質体とセルロースセルロースアセテート 繊維との相互作用を阻害するので触媒活性が低下しなレ、とレ、う推定もできる。  As another estimate, there is a case where the catalyst component is dispersed in the cellulose acetate fiber and the case where the catalyst component supported on the porous body is dispersed in the cellulose acetate fiber. As a result of the interaction between the components in the smoke and the catalyst component or carrier and cellulose acetate fiber, the catalytic performance may be reduced. By placing it in the middle, the porous material and the cellulose cellulose acetate fiber interact with each other. It is possible to estimate that the catalytic activity does not decrease because the action is inhibited.
また別の推定として、一酸ィ匕炭素を酸ィ匕するために必要な酸素を得るために、触媒担持体 (多孔 質体あるいはセルロースアセテート繊維)は空間に晒されてレ、る必要がある力 多孔質体に担持し た触媒をセルロースアセテート繊維中に分散した場合は、必要な空間が少なくなるため、触媒性能 が低下する。それに対して、本発明のような構造を取った場合は、多孔質体の周囲に十分な空間 が得られるため触媒の活性低下が抑制されるという推定もできる。  Another estimate is that the catalyst support (porous material or cellulose acetate fiber) must be exposed to space in order to obtain the oxygen necessary to acidify the carbon monoxide and carbon. Strength When the catalyst supported on the porous material is dispersed in cellulose acetate fiber, the required space is reduced and the catalyst performance is lowered. On the other hand, when the structure as in the present invention is adopted, it can be estimated that a sufficient space is obtained around the porous body, so that a decrease in the activity of the catalyst is suppressed.
さらに、別の推定として、たばこ煙中の触媒を被毒する物質の吸着効果が考えられる。多孔質体 がセルロースアセテート繊維中に分散された場合は被毒物質がセルロースアセテート繊維に充分 捕捉されない被毒物質が存在するが、本発明の構成を取ることでたぼこ煙成分などに含まれる被 毒物質はセルロースアセテート繊維中を通過する間に吸着され触媒の被毒の程度が緩和される、 すなわちセル口一スアセテート繊維の被毒物質吸着効果が有効に機能している可能性が考えられ る。  Furthermore, as another presumption, the adsorption effect of the substance which poisons the catalyst in tobacco smoke can be considered. When the porous material is dispersed in the cellulose acetate fiber, there is a poisonous substance in which the poisonous substance is not sufficiently trapped in the cellulose acetate fiber. The poisonous substance is adsorbed while passing through the cellulose acetate fiber, and the degree of poisoning of the catalyst is reduced, that is, the poisonous substance adsorption effect of the cell mouth acetate fiber may be functioning effectively. It is possible.
[0020]  [0020]
更に別の推定としては、活性炭などの粉末をセルロースアセテート繊維中に分散固定化する場 合においては、フィルタトウを開繊 (繊維を解し広げること）し、活性炭などの粉末を散布し、トリァセ チンなどの可塑剤 (接着剤)を散布して粉末をセルロースアセテートに固定するとともに、フィルタ口 ッドに形成する手法を用いるのが常用技術である力 S、これが作用してレ、る可能性もある。すなわち、 触媒を担持させた多孔質体を分散させトリァセチンなどの可塑剤でフィルタトウに巻き上げることで たばこ煙用フィルタは製造される力 この段階で可塑剤を多孔質体が吸着あるいは吸収し、そのた めに多孔質体中に存在する触媒の活性を低下させることなどが考えられる。 Another estimate is that when powders such as activated carbon are dispersed and fixed in cellulose acetate fibers, the filter tow is opened (the fibers are unfolded and spread), and powders such as activated carbon are sprayed and the triacease is spread. It is a common technique to apply a technique to form a filter lid while spraying a plasticizer (adhesive) such as chin to fix the powder to cellulose acetate, and the possibility that this will act There is also. That is, the porous body carrying the catalyst is dispersed and rolled up on the filter tow with a plasticizer such as triacetin, so that the filter for tobacco smoke is produced. At this stage, the porous body adsorbs or absorbs the plasticizer. The Therefore, it is conceivable to reduce the activity of the catalyst present in the porous body.
以上の推定いずれかあるはこれらの組み合わせが触媒活性の低下の原因として考えられるが、 明確にはそのメカニズムは特定できていない。  Any of the above estimations may be considered as a cause of the decrease in catalytic activity, but the mechanism has not been clearly identified.
[0021] '  [0021] '
[中間部]  [Middle part]
本発明のたばこフィルタでは中間部とはすなわち両端部と巻き紙に囲われた空隙部となっており、 ここに本宪明の担持体を配置する。本発明の担持体は粉末状あるいは粒状であり、特に好ましく は、粒度として、 10メッシュを通過し 70メッシュを通らなレ、範囲（10メッ ュパス 70メッシュオン）の 含有量が 90重量 %以上の粒状物である。また中間部の長さ (たばこの軸方向の長さ）は、担持体 の充填量により適宜調整できる力 3mm力 15mm程度の長さであればよぐより好ましくは 5mm 力も 10mm程度である。  In the cigarette filter of the present invention, the intermediate portion is a void portion surrounded by both ends and the wrapping paper, and a carrier of this invention is disposed here. The carrier of the present invention is powdery or granular, and particularly preferably, the particle size passes through 10 mesh and passes through 70 mesh, and the content in the range (10 mepass 70 mesh on) is 90% by weight or more. It is a granular material. Further, the length of the intermediate portion (the length in the axial direction of the cigarette) can be adjusted as appropriate according to the filling amount of the carrier. If the length is about 3 mm and about 15 mm, 5 mm is more preferably about 10 mm.
この 3個の部分を基本として両端部 ίこ更に別のたばこフィルタ部分を設けても良い。すなわち、吸 い口側を 2個の部分力 構成するようにし、中間部、端部とし 4個の部分力 構成したたばこフィル タとすることもできる。 Based on these three parts, both ends and other tobacco filter parts may be provided. In other words, the cigarette filter can be configured such that the suction side is configured with two partial forces, and the intermediate portion and the end are configured with four partial forces.
中間部における充填率は特に限定されるものではなぐ担持体が圧縮されない程度の充填率で あれば構わない。充填率が高くなりすぎると、通気抵抗値が両端部よりも高くなり、この形態は好ま しくなレ、。更には中間部の充填状態としては、中間部の充填量を低くし、意図的に空隙を設けて、 中間部の粒状物が振とうにより可動する状態にしても良レ、。  The filling rate in the intermediate part is not particularly limited as long as the filling rate is such that the carrier is not compressed. If the filling rate becomes too high, the ventilation resistance value becomes higher than both ends, and this form is not preferable. Furthermore, as for the filling state of the intermediate part, the filling amount of the intermediate part is lowered, the gap is intentionally provided, and the intermediate part is allowed to move by shaking.
[0022]  [0022]
[両端部]  [Both ends]
本発明のたばこ煙用フィルターを構成する両端部の機能としては以下の 4点が挙げられる。  The functions of both ends constituting the cigarette smoke filter of the present invention include the following four points.
第一に、触媒を担持した多孔質体をトリァセチンなどの可塑剤 (接着剤)を用いることなくたばこ煙 用フィルタ内部に保持して、たばこ煙用フィルタとしての構造を保持するとともに、たばこに装着さ れる前のたばこ煙用フィルタ（当業者ではプラグとも称される場合がある。 )の取り扱いが可能なよう にすることである。 ·  First, the porous material carrying the catalyst is held inside the cigarette smoke filter without using a plasticizer (adhesive) such as triacetin to maintain the structure of the cigarette smoke filter and attach it to the cigarette. To enable handling of tobacco smoke filters (sometimes referred to as plugs by those skilled in the art). ·
第二に、たばこ喫煙時すなわちたばこ煙用フィルタ内部をたばこ煙が通過する状態でたばこ煙中 に含まれる被毒物質が直接中間部の担持体と接触しないようにするものである。  Secondly, it prevents the poisonous substances contained in the tobacco smoke from coming into direct contact with the intermediate carrier when smoking cigarettes, that is, when the tobacco smoke passes through the filter for tobacco smoke.
第三には、両端部が存在し、特に吸い口側の両端部が存在することでたばこ煙用フィルタの中 間部でのたばこ煙の滞留時間を生み出すことである。 Third, there are both ends, especially in the cigarette smoke filter due to the presence of both ends on the mouth side. To create a residence time for tobacco smoke in the middle.
第四には、トリァセチンなどの可塑剤 (接着剤)を使用することなく触媒や触媒を担持させた多孔 質体 (担持体)を喫煙者が吸い込まないようにすることである。すなわち、本発明の構成をとつた場 合にはトリァセチンや接着剤でフィルタロットを構成する材料に固着させてレ、なレ、くても、吸レヽ口側 の両端部が存在し、この吸い口側の両端部が担持体が喫煙者の口中に吸い込まれることを防止 することができる。  The fourth is to prevent smokers from inhaling a catalyst or a porous material (support) carrying a catalyst without using a plasticizer (adhesive) such as triacetin. That is, in the case of adopting the configuration of the present invention, it is fixed to the material constituting the filter lot with triacetin or an adhesive, but there are both ends on the suction port side. Both ends on the mouth side can prevent the carrier from being sucked into the mouth of the smoker.
[0023]  [0023]
このような両端部の機能を発現するために両端部の長さ (たばこ煙用フィルタの軸方向の長さ)と しては、たばこ葉側の両端部としては 2mmから 15mm、好ましくは 3mm力 12mm、より好ましく は 5mmから 10mmである。たばこ葉側の両端部の長さが短レヽ場合にはたばこ煙中の被毒物質の 除去性能が十分ではないため触媒の活性が低下する可能性があり、また触媒を封入する機能が 損なわれる場合が生じる可能性がある。  In order to develop such functions at both ends, the length of both ends (the axial length of the tobacco smoke filter) is 2 to 15 mm, preferably 3 mm as the both ends on the tobacco leaf side. It is 12 mm, more preferably 5 mm to 10 mm. If the length of both ends on the tobacco leaf side is short, the ability to remove poisonous substances in tobacco smoke may not be sufficient, which may reduce the activity of the catalyst and impair the function of encapsulating the catalyst. Cases can arise.
またたばこ葉側の両端部の長さが長すぎる場合には通気抵抗が大きくなる。 In addition, when the length of both end portions on the tobacco leaf side is too long, the ventilation resistance is increased.
吸い口側の両端部の長さとしては、 5mmから 25mm、より好ましくは 7mmから 23mm、更に好ま しくは 10mm力 20mm、特に好ましくは 12mmから 18mmである。吸い口側の両端部の長さが短 い場合には、フィルタ硬度が不足するために喫煙感を損なう場合があり、また吸い口側の両端部の 長さが長レ、場合には通気抵抗が大きくなる。  The length of both ends on the mouthpiece side is 5 to 25 mm, more preferably 7 to 23 mm, more preferably 10 mm, 20 mm, and particularly preferably 12 to 18 mm. If the length of both ends on the mouth side is short, the filter hardness may be insufficient, which may impair the feeling of smoking. Becomes larger.
たばこ葉側の両端部の長さと吸い口側の両端部の長さの和、すなわち両端部の合計長としては The sum of the length of both ends on the tobacco leaf side and the length of both ends on the mouthpiece side, that is, the total length of both ends
15mm力ら 35 であり、好ましくは 17mmから 30mm、より好ましくは 20mmから 27mmである。 また、たばこ葉側の両端部と吸レヽ口側の両端部には必要に応じてベントホールを一列乃至は複 数列設けても良い。 15 mm force is 35, preferably 17 mm to 30 mm, more preferably 20 mm to 27 mm. Further, one or more vent holes may be provided at both ends on the tobacco leaf side and both ends on the suction mouth side as necessary.
[0024]  [0024]
本発明のたばこ煙用フィルターを構成する両端部の素材としては、公知のたばこフィルタを形成 するものが用いられる。すなわち両端部の素材は、慣用のフィルタ素材、例えば、セルロース (フィ ブリルィ匕されていてもよい木材パルプやリンターパルプなど）、再生セルロース（ビスコースレーヨン. 銅アンモニアレーヨンなど）、セルロースエステル、合成高分子（ポリエステル、ポリウレタン、ポリアミ ド、ポリエチレン、ポリプロピレンなど)などの繊維や粉粒体で構成できる。これらの繊維や粉粒体は 単独で又は二種以上組み合わせて使用できる。 フィルタ素材は、フィルタ特性を損なわない範囲の通気抵抗および密度、例えば、長さ 10cm、直 怪 7. 8mm のフィルタにおいて、通気抵抗 200〜600mmWG (ウォーターゲージ）、好ましくは 300~500讓 WG程度であり、密度は。. 20~0. 50gZcm2、好ましくは。. 25~0. 45g/cm 2 (例えば、 0. 30〜0. 45g/cm2 )程度である場合が多い。 As materials for both ends constituting the cigarette smoke filter of the present invention, those forming a known cigarette filter are used. That is, the material of both ends is a conventional filter material such as cellulose (wood fiber and linter pulp which may be fibrinized), regenerated cellulose (viscose rayon. Copper ammonia rayon etc.), cellulose ester, synthetic high It can be composed of fibers and granules such as molecules (polyester, polyurethane, polyamide, polyethylene, polypropylene, etc.). These fibers and powders can be used alone or in combination of two or more. The filter material must have a ventilation resistance and density within the range that does not impair the filter characteristics, for example, a filter with a length of 10 cm and a straight defect of 7.8 mm, with a ventilation resistance of 200 to 600 mm WG (water gauge), preferably about 300 to 500 mm WG. There is density. 20 to 0.50 gZcm2, preferably. It is often about 25 to 0.45 g / cm 2 (for example, 0.30 to 0.45 g / cm 2).
[0025]  [0025]
好ましいフィルタ素材には、セルロース繊維及び/又はセルロースエステル繊維が含まれ、喫味 を向上させるため少なくともセルロースエステル繊維を含む場合が多レヽ。セルロースエステル繊維 としては、例えば、セルロースアセテート、セルロースプロピオネート、セルロースブチレートなどの 有機酸エステル (例えば、炭素数 2〜4程度の有機酸とのエステル）；セルロースアセテートプロピ ォネート、セルロースアセテートプチレートなどの混酸エステル；およぴポリカプロラクトングラフト化 セルロースエステルなどのセルロースエステル誘導体などが例示される。これらのセルロースエス テル繊維も、単独でまたは二種以上混合して使用できる。  Preferred filter materials include cellulose fibers and / or cellulose ester fibers, and at least cellulose ester fibers are often included to improve the taste. Examples of cellulose ester fibers include organic acid esters such as cellulose acetate, cellulose propionate, and cellulose butyrate (for example, esters with organic acids having about 2 to 4 carbon atoms); cellulose acetate propionate, and cellulose acetate petite. And mixed ester esters such as cellulose ester derivatives such as polycaprolactone grafted cellulose esters. These cellulose ester fibers can also be used alone or in admixture of two or more.
[0026]  [0026]
セルロースエステルの平均重合度（粘度平均重合度）は、例えば、 50〜900、好ましくは 200〜8 00程度の範囲から選択でき、セルロースエステルの平均置換度は、例えば、 1. 5〜3. 0程度の範 囲から選択できる。好ましいセルロースエステルには、例えば、セルロースアセテート、セルロース プロピオネート、セルロースプチレート、セルロースアセテートプロピオネート、セルロースァセテ一 トプチレート、特にセルロースアセテートが含まれる。  The average degree of polymerization (viscosity average degree of polymerization) of the cellulose ester can be selected, for example, from the range of about 50 to 900, preferably about 200 to 800, and the average degree of substitution of the cellulose ester is, for example, 1.5 to 3.0. You can choose from a range of degrees. Preferred cellulose esters include, for example, cellulose acetate, cellulose propionate, cellulose petitate, cellulose acetate propionate, cellulose acetate propylate, especially cellulose acetate.
[0027]  [0027]
前記両端部は公知のフィルタ形成方法で作成することができる。例えば抄紙構造のフィルタ、あ るいは発泡体を成型したフィルタなども用いることができる。し力 ながら、最も好ましい構成体はト ゥ構造のフィルタロッドである。  The both end portions can be formed by a known filter forming method. For example, a papermaking structure filter or a filter molded with a foam can be used. However, the most preferred structure is a toe-structured filter rod.
上記の通り、本発明のたばこ葉側両端部および吸レヽ口側両端部は必要に応じて二分割構造とし ても構わなレ、。また例えばたばこ葉側両端部を単一構造とした上で、吸レヽ口側両端部を二分割構 造とし両端部と吸レ、口部の中間に当たる部分にチヤコールフィルタを配しても構わなレ、。  As described above, the both ends of the tobacco leaf side and the both ends of the suction mouth of the present invention may be divided into two parts as required. In addition, for example, the both ends of the tobacco leaf side may have a single structure, and both ends of the suction mouth side may have a two-part structure, and a charcoal filter may be disposed at a portion corresponding to the middle of both ends and the suction mouth. Nare ,.
尚、本発明の両端部おょぴその一部については必要に応じてトリァセチンなどの可塑剤で触媒 または触媒を添加した多孔質体 (担持体)を展着させて巻き上げたトウ構造のフィルタロッドを用い ても構わなレ。特に吸い口側両端部を二分割構造とし両端部と吸レ、口部の中間に当たる部分に 上記の可塑剤を用レ、て触媒または担持体を展着したトウ構造のフィルタロッドを配しても構わなレ、。 このような場合でも最も吸 ヽ口に近レ、側は触媒を展着して 、なレ、トウ構造のフィルタロッドとした場 合には、両端部と吸い口部の中間に当たる部分の可塑剤の添加量を少なくし τ¾触媒や担持体 が喫煙者の口中に入ることを防止できる。 In addition, a filter rod having a tow structure in which both ends of the present invention are rolled up by spreading a catalyst or a porous material (support) added with a catalyst with a plasticizer such as triacetin as necessary. You can use it. Especially, the both ends of the mouthpiece side are divided into two parts, and the middle part between both ends and the suction mouth. A filter rod having a tow structure in which the plasticizer is used and a catalyst or a carrier is spread may be disposed. Even in such a case, when a catalyst is spread on the side closest to the suction port and the side is a toe-structured filter rod, the plasticizer in the portion between the both ends and the suction port Τ¾ catalyst and carrier can be prevented from entering the smoker's mouth.
[0028]  [0028]
[トウ構造のフィルタロッド]  [Tow structure filter rod]
前記トウ構造のフィルタロッドとは、繊維は、例えば、 3,000〜1,000，000本、好ましくは 5，000〜 100,000本程度のセルロースエステル繊維の単繊維 (フィラメント）を束ねることにより形成されたト ゥ (繊維束)の形態のものである。  The tow-structure filter rod is a tow formed by bundling single fibers (filaments) of, for example, about 3,000 to 1,000,000, preferably about 5,000 to 100,000 cellulose ester fibers. Fiber bundle).
繊維の断面形状は、特に制限されず、例えば、円形、楕円形、異形 (例えば、 Υ字状、 X字状、 I字 状、 R字状、 Η字状など)や中空状などのいずれであってもよい。繊維径及び繊維長は、繊維の種 類に応じて選択でき、例えば、繊維径 0. 01〜： I00 /i m、好ましくは 0. 1〜50 μ πα程度、繊維長 5 0 μ m〜5cm、好ましくは 100 μ m~3cm¾度の範囲力も選択する場合が多い。セルロースエステ ルの繊度は、 1〜16デニール、好ましくは 1〜： 10デニール程度の範囲力 選択できる。セルロース エステル繊維などの繊維は、非捲縮繊維又は捲縮繊維のいずれであってもよい。特に好ましくは 捲縮 »隹を用レ、ることである。 The cross-sectional shape of the fiber is not particularly limited. There may be. The fiber diameter and fiber length can be selected according to the type of fiber. For example, the fiber diameter is 0.01 to: I00 / im, preferably about 0.1 to 50 μπα, the fiber length is 50 μm to 5 cm, A range force of preferably 100 μm to 3 cm 3 degrees is also often selected. The fineness of the cellulose ester can be selected in the range of 1 to 16 denier, preferably 1 to about 10 denier. The fibers such as cellulose ester fibers may be non-crimped fibers or crimped fibers. It is particularly preferable to use crimp »隹.
[0029]  [0029]
フィルタ素材は、フィルタロッドに適度な硬度を発現させるため、慣用のバインダー成分を含んで いてもよレ、。バインダー成分としては、繊維の種類に応じて、可塑剤（トリァセチンなど)、樹脂 (天 然高分子、半合成高分子、合成高分子から選択された水溶性高分子又は水不溶性高分子）、デ ンプンやデンプン誘導体などの多糖類などが使用でき、樹脂は、溶液、分散液などの液状又は半 固形状、粉粒状、繊維状などの固形、溶融状などで使用できる。  The filter material may contain a conventional binder component in order to make the filter rods exhibit appropriate hardness. Depending on the type of fiber, the binder component includes plasticizers (such as triacetin), resins (water-soluble or water-insoluble polymers selected from natural, semi-synthetic, and synthetic polymers), Polysaccharides such as starch and starch derivatives can be used, and the resin can be used in a liquid or semi-solid form such as a solution or dispersion, a solid form such as a granular or fibrous form, or a molten form.
[0030]  [0030]
[多孔質体]  [Porous body]
前記たばこ要素に添加する触媒成分を担持するための多孔質体は、前記触媒成分の活性を有 効に発現させ、たばこ要素に対する添加の操作性や歩留りを向上できる限り特に制限されず、例 えば、活性炭、シリカゲル、アルミナ、ゼォライト、シリカ、シリカ一アルミナ、ニッケル一アルミナなど の多孔質材料であつ τ¾よいが、比表面積が大きな担体が好ましぐ非飛散性などの点から、微粉 末状でない多孔質材料が好ましい。これらの多孔質体は、単独又は二種以上混合して使用できる。 多孔質体の比表面積は、前記触媒成分を有効に担持できる広い範囲力 選択でき、例えば、 100 ~4000m2 gs好ましくは 300~3000m2 /g (例えば 400〜2000m2 /g)程度の範囲力 選 択できる。 The porous body for supporting the catalyst component to be added to the tobacco element is not particularly limited as long as it effectively exhibits the activity of the catalyst component and can improve the operability and yield of the addition to the tobacco element. It is a porous material such as activated carbon, silica gel, alumina, zeolite, silica, silica-alumina, nickel-alumina, etc. A porous material that is not powdery is preferred. These porous bodies can be used alone or in admixture of two or more. The specific surface area of the porous body, the catalyst components can be selected a wide range forces can effectively carry, for example, 100 ~ 4000m 2 g s preferably 300 ~ 3000m 2 / g (e.g. 400~2000m 2 / g) in the range of about Force can be selected.
[0031]  [0031]
また、多孔質体の粒度は、 90重量％以上が、例えば、 10メッシュパス 70メッシュオン、好ましくは 10メッシュパス 50メッシュオン、特に好ましくは 10メッシュパス 32メッシュオン、より好ましくは 14 メッシュパス 25メッシュオンである。  The particle size of the porous body is 90% by weight or more, for example, 10 mesh pass 70 mesh on, preferably 10 mesh pass 50 mesh on, particularly preferably 10 mesh pass 32 mesh on, more preferably 14 mesh pass 25 Mesh on.
前記の粒状物とは、粒度として、 10メッシュを通過し 70メッシュを通らない範囲（10メッシュノ、 °ス 70 メッシュオン)の含有量が 90重 *%以上の粒子状物である。このような粒状物は通気抵抗値を低く することができ、本発明の効果を一層発揮できる。 The particulate matter is a particulate matter having a particle size in a range that passes through 10 mesh and does not pass through 70 mesh (10 mesh, 70 mesh on). Such a granular material can lower the ventilation resistance value, and can further exert the effect of the present invention.
好ましレ、多孔質材料の材質には、活性炭とシリカゲル力 S含まれる。 Preferred porous materials include activated carbon and silica gel strength S.
[0032]  [0032]
ffi性炭 3  ffi sex charcoal 3
本発明の活性炭には、種々の活性炭、例えば、ヤシ殻、タルミ殻などの果実殻炭、木炭などの植 物系活性炭、フエノール樹脂、レーヨン、ポリ塩化ビニリデン、アクリル樹脂、セルロースなどの高分 子を原料とする合成樹脂又は高分子系活性炭、褐炭、レキ青炭、無煙炭、コークス、石炭又は石 油ピッチなどの鉱物系原料を用いた鉱物系活性炭などが含まれる。これらの活性炭は一種又は二 種以上使用できる。これらの活性炭のうちヤシ殻活性炭などの植物系活性炭を用いる場合が多 、。  The activated carbon of the present invention includes various activated carbons such as fruit shell charcoal such as coconut shell and talmi husk, plant activated carbon such as charcoal, high polymer such as phenol resin, rayon, polyvinylidene chloride, acrylic resin and cellulose. And mineral activated carbon using mineral raw materials such as synthetic resin or polymer activated carbon, lignite, lecite, anthracite, coke, coal or petroleum pitch. One or more of these activated carbons can be used. Of these activated carbons, plant activated carbon such as coconut shell activated carbon is often used.
[0033]  [0033]
前記活性炭などの吸着剤には、必要に応じて有害成分に対する選択除去性を高めるため、非揮 発性薬剤、例えば、有機酸又は無機酸などの酸成分、有機塩基又は無機塩基などの塩基成分が 担持されていてもよい。  For adsorbents such as activated carbon, non-volatile chemicals, for example, acid components such as organic acids or inorganic acids, base components such as organic bases or inorganic bases, are used to enhance the selective removal properties against harmful components as necessary. May be carried.
本発明での活性炭は繊維状であってもよレ、が粉粒状で使用する場合が多レ、。このような粒状物 は造粒活性炭などのように、バインダーを用いて造粒した造粒物であってもよい。活性炭の比表面 積は、例えば、 200〜4000m2 好ましくは 300~3000m2 g，さらに好ましくは 500〜250 Om2 Zg程度であり、 1000~2000m2 /gから選択できる。 The activated carbon in the present invention may be fibrous, but is often used in a granular form. Such a granular material may be a granulated material granulated using a binder, such as granulated activated carbon. Specific surface area of the activated carbon, for example, 200～4000M 2 preferably 300 ~ 3000 m 2 g, more preferably about 500-250 Om 2 Zg, may be selected from the 1000 ~ 2000m 2 / g.
[0034] [シリカゲノレ] [0034] [Silica Genore]
本発明のシリカゲルの平均粒度は、用途に応じて適宜選択でき、例えば、 90重量 %以上が、 10メ ッシュパス 70メッシュオン、好ましくは 10メッシュパス 50メッシュオン、特に好ましくは 10メッシュ パス 32メッシュオン、より好ましくは 14メッシュパス 25メッシュオンであってもよい。  The average particle size of the silica gel of the present invention can be appropriately selected depending on the application. For example, 90% by weight or more is 10 mesh pass 70 mesh on, preferably 10 mesh pass 50 mesh on, particularly preferably 10 mesh pass 32 mesh on. More preferably, 14 mesh pass and 25 mesh on may be used.
[0035]  [0035]
上記のような範囲であれば、適度な通気抵抗を損なうことなぐたばこフィルターなどに適用でき る。シリカゲルの平均細孔径 (平均孔径）は、例えば、 0. 5〜： I000nm、好ましくは:!〜 800nm、さ らに好ましくは 3〜600nm程度であってもよレ、。  If it is in the above range, it can be applied to a cigarette filter without impairing an appropriate ventilation resistance. The average pore diameter (average pore diameter) of the silica gel is, for example, 0.5 to: I000 nm, preferably:! To 800 nm, more preferably about 3 to 600 nm.
特に、本努明では、比較的大きい平均細孔径、例えば、平均細孔径 20nm以上 (例えば、 20〜90 Onm程度)、好ましくは 25nm以上 (例えば、 25〜700nm程度）、さらに好ましくは 30nm以上 (例 えば、 35~650nm程度）、特に 40nm以上（例えば、 45〜600nm程度）、通常 20〜500nm (例 えば、 25〜400nm、好ましくは 30〜350nm)程度であってもよい。通常、ガスなどの吸着には、 比較的小さい細孔径を有するシリカゲルが使用される場合が多い。これに対して、本発明では、大 きい細孔径を有するシリカゲルを好適に用いることにより、前記触媒成分との組み合わせて、一酸 化炭素の除去性をより一層高めることができる。 In particular, in this effort, a relatively large average pore diameter, for example, an average pore diameter of 20 nm or more (for example, about 20 to 90 Onm), preferably 25 nm or more (for example, about 25 to 700 nm), more preferably 30 nm or more ( For example, it may be about 35 to 650 nm), particularly 40 nm or more (for example, about 45 to 600 nm), usually 20 to 500 nm (for example, 25 to 400 nm, preferably about 30 to 350 nm). Usually, silica gel having a relatively small pore diameter is often used for adsorption of gas or the like. On the other hand, in the present invention, the use of silica gel having a large pore diameter makes it possible to further improve carbon monoxide removability in combination with the catalyst component.
[0036]  [0036]
シリカゲルの比表面積 (平均比表面積)は、例えば、 0. 5m2/g以上 (例えば、 l〜1200m2/g 程度）、好ましくは 1. 5m2/g以上 (例えば、 2~1000m2/g程度）、さらに好ましくは 5ιη2 ^以上 (例えば、 6〜800m2Zg程度）であってもよく、通常 3〜300m2Zg (例えば、 4〜200m2Zg、好ま しくは 5〜： 150m2んさらに好ましくは 6〜： L00m2/g、特に 7〜80m2/g程度）であってもよレヽ。 シリカゲルの平均細孔容積は、例えば、 0. l〜2mL/g、好ましくは 0. 3〜： I. 8mL/g、さらに好 ましくは 0. 5〜： 1. 5mLZg程度であってもよい。 The specific surface area of silica gel (average specific surface area) is, for example, 0. 5 m 2 / g or more (e.g., about l~1200m 2 / g), preferably 1. 5 m 2 / g or more (e.g., 2 ~ 1000m 2 / g About 5ιη 2 ^ (for example, about 6 to 800 m 2 Zg), usually 3 to 300 m 2 Zg (for example, 4 to 200 m 2 Zg, preferably 5 to: 150 m 2 More preferably 6 to: L00m 2 / g, especially about 7 to 80m 2 / g). The average pore volume of the silica gel may be, for example, about 0.1 to 2 mL / g, preferably about 0.3 to I. 8 mL / g, and more preferably about 0.5 to about 1.5 mLZg. .
[0037]  [0037]
また、シリカゲルの温度 22°Cおよび 60%RHにおける平衡水分率 (又は平衡吸水率、すなわち、 温度 22°Cおよび 60%RHの条件下で、平衡状態における水分含有率)は、例えば、 0. 01〜5 0%、好ましくは 0. 1〜30%程度であってもよい。特に、本発明では、温度 22°Cおよび 60%RHに おける平衡水分率力 例えば、 0. 01〜： 10% (例えば、 0· 03〜8%)、好ましくは 0. 05〜7% (例 えば、 0. 108〜5%)、さらに好ましくは 0. 1〜3% (例えば、 0. 15〜2. 5%)、特に 0. 5〜2%、 通常 0. 01〜 5 %程度のシリカゲルを好適に使用してもょレ、。 In addition, the equilibrium moisture content of silica gel at a temperature of 22 ° C and 60% RH (or equilibrium water absorption, that is, the water content in an equilibrium state at a temperature of 22 ° C and 60% RH) is, for example, 0. It may be about 01 to 50%, preferably about 0.1 to 30%. In particular, in the present invention, the equilibrium moisture content power at a temperature of 22 ° C. and 60% RH, for example, 0.01 to 10% (for example, 0.03 to 8%), preferably 0.05 to 7% (eg, E.g., 0.18-5%), more preferably 0.1-3% (e.g., 0.15-2.5%), especially 0.5-2%, Usually, about 0.01 to 5% silica gel is preferably used.
[0038]  [0038]
[触媒成分]  [Catalyst component]
前記たばこ要素に添加する触媒成分は、金属化合物と金触媒とで構成されており、触媒成分は、 金属化合物と金触媒との共沈物 (又は共存物）、金属化合物で構成された担体と、この担体に担 持された触媒活性成分としての金触媒とで構成してもよい。金触媒は微粒子状で分散して、共沈 (共存）又は担持されてレ、る場合が多レ、。 The catalyst component added to the tobacco element is composed of a metal compound and a gold catalyst, and the catalyst component is a coprecipitate (or coexisting substance) of the metal compound and the gold catalyst, and a carrier composed of the metal compound. Alternatively, it may be composed of a gold catalyst as a catalytically active component carried on this carrier. Gold catalysts are often dispersed in the form of fine particles and coprecipitated (coexisting) or supported.
[0039]  [0039]
前記触媒活性成分を構成する金属化合物は、前記金触媒の活性が有効に発現する限り種々の 金属化合物、例えば、酸化物、炭酸塩、炭酸水素塩などが例示でき、遷移金属の酸化物などが好 ましい。遷移金属の酸化物には、例えば、 Sc, Y、ランタノイド金属ゃァクチノイド金属などの周期 表 3Α族金属、 Ti, Zrなどの周期表 4A族金属、 Vなどの周期表 5A族金属、 Mo， Wなどの周期表 6A族金属、 Mnなどの周期表 7A族金属、 Cu, Agなどの周期表 IB族金属、 Znなどの周期表 2B 族金属、 Fe, Ru, Co, Rh, Ni, Pd， Ptなどの周期表 8族金属力ら選択された金属の酸匕物が含 まれる。これらの担体は単独又は二種以上使用できる。好ましい金属化合物は、喫煙時又は喫煙 後も固形を維持できる不燃性を有し、喫煙により有害成分を生成しない化合物である。  Examples of the metal compound constituting the catalytically active component include various metal compounds, for example, oxides, carbonates, bicarbonates, etc., as long as the activity of the gold catalyst is effectively expressed, such as oxides of transition metals. It is preferable. Transition metal oxides include, for example, Sc, Y, lanthanoid metals and actinoid metals, etc. Periodic Table 3 Group X metals, Ti, Zr, etc. Periodic Table 4A metals, V, etc. Periodic Table 5A metals, Mo, W Periodic table such as Group 6A metal, Periodic table such as Mn Group 7A metal, Periodic table such as Cu and Ag Group IB metal, Periodic table such as Zn Group 2B metal, Fe, Ru, Co, Rh, Ni, Pd, Pt This includes metal oxides selected from the Group 8 metal forces of the periodic table. These carriers can be used alone or in combination of two or more. A preferred metal compound is a compound that has nonflammability that can maintain a solid state even during smoking or after smoking, and does not generate harmful components by smoking.
[0040]  [0040]
特に好ましい金属化合物には周期表 8族金属 (例えば、鉄，コバルト，ニッケルなど)またはチタ ンの酸化物が含まれる。金属化合物は、金触媒を担持する微粒子状の形態で、多孔質体に担持 される。触媒成分を構成する金触媒 (特に金微粒子)の粒径は、触媒活性を有効に発現できる範 囲、例えば、金原子のサイズから 30nm程度の範囲力 選択できる。金微粒子の粒径は、例えば、 30nm以下 (例えば、 0. 5〜30nm程度）、好ましくは 20nm以下 (例えば、 l〜20nm)、さらに好ま しくは:!〜 1 Onm (例えば、 1〜 5nm)程度である場合が多レ、。  Particularly preferred metal compounds include Group 8 metals of the periodic table (eg, iron, cobalt, nickel, etc.) or oxides of titanium. The metal compound is supported on the porous body in the form of fine particles supporting a gold catalyst. The particle size of the gold catalyst (particularly gold fine particles) constituting the catalyst component can be selected within a range where the catalytic activity can be effectively expressed, for example, a range force of about 30 nm from the size of the gold atom. The particle size of the gold fine particles is, for example, 30 nm or less (for example, about 0.5 to 30 nm), preferably 20 nm or less (for example, 1 to 20 nm), and more preferably:! To 1 Onm (for example, 1 to 5 nm) There are many cases where it is about.
触媒活性成分の使用量 (担持量など)は、金触媒の活性が発現する範囲、例えば、金属化合物 (触媒担体など)と触媒活性成分とを合せた触媒成分に対して、金原子 0. 1〜： 15%、好ましくは 1 〜： 10%、さらに好ましくは 2〜8% (例えば、 3~6%)程度である。金原子の量 (担持量)が 0. 1% 未満では、一酸化炭素を酸化除去能が小さぐ 15%を越えても金原子同士が近接しすぎて凝集し、 粗大粒子となる可能性があり、一酸化炭素除去能がさほど向上しない場合が多い。 [0041] The amount of the catalytically active component used (supported amount, etc.) is within the range in which the activity of the gold catalyst is expressed, for example, the amount of gold atoms is 0.1. -: 15%, preferably 1-: 10%, more preferably about 2-8% (for example, 3-6%). If the amount of gold atoms (supported amount) is less than 0.1%, carbon monoxide has a small oxidative removal ability, and even if it exceeds 15%, gold atoms may be too close together and aggregate to form coarse particles. In many cases, the carbon monoxide removal ability is not so improved. [0041]
なお、金触媒は、金属化合物で構成された触媒担体に微粒子状で均一に高分散して担持され ているのが好ましい。なお、金原子の量 (担持量）「％」は、触媒成分の全金属成分に対する金原 子の割合を意味し、次のようにして算出することができ、上記金属成分には、炭素も含まれる。，  The gold catalyst is preferably supported in a finely divided and uniformly dispersed state on a catalyst carrier composed of a metal compound. The amount of gold atoms (supported amount) “%” means the ratio of gold atoms to the total metal components of the catalyst component, and can be calculated as follows. The metal components include carbon. It is. ,
[0042]  [0042]
例えば、触媒成分が、 ηモルの金属酸化物 Fe2 03力もなる化合物 (担体など）と、この金属化合 物 (担体など)に保持又は担持された金 m (g)とで構成されてレヽる場合 [すなわち Au m (g) / (n X Fe2 03 ) ]である場合、  For example, when the catalyst component is composed of η moles of metal oxide Fe2 03 compound (support etc.) and gold m (g) held or supported on this metal compound (support etc.) [Ie Au m (g) / (n X Fe2 03)]
金原子の個数 NAu=m(g) ÷ 197(金の原子量） XN (ァボガドロ数）、 Number of gold atoms NAu = m (g) ÷ 197 (atomic weight of gold) XN (Avogadro number),
金属化合物 (触媒担体など)の鉄金属原子の個数 Ns=nX 2 XNで表されるから、計算式 The number of iron metal atoms in the metal compound (catalyst support etc.) Ns = nX 2 XN
NAuZ (NAu+Ns) X 100 (%)  NAuZ (NAu + Ns) X 100 (%)
で算出できる。 It can be calculated by
[0043]  [0043]
多孔質体に対する触媒成分の割合は、触媒活性を有効に発現できる範囲力 選択でき、例えば、 1重量％以上 (例えば、 1〜50重量％)、好ましくは 3重量％以上 (例えば、 3〜25重量％)、さらに 好ましくは 5重量％以上 (例えば、 5~20重量％)程度である場合が多レ、。多孔質体に対する触媒 成分の割合が 1重量％未満では、一酸化炭素の酸化除去能が十分でない。なお、前記多孔質体 や触媒成分は、分散剤などにより表面処理されていてもよぐ分散剤などの添加剤を含んでいても よい。また、燃焼時に比表面積が減少するのを抑制するため、金属化合物 (担体など）には酸化処 理などの表面処理を施してもょレ、。  The ratio of the catalyst component to the porous body can be selected within a range power that can effectively exhibit the catalytic activity, and for example, 1% by weight or more (for example, 1 to 50% by weight), preferably 3% by weight or more (for example, 3 to 25%). % By weight), more preferably 5% by weight or more (for example, 5 to 20% by weight). If the ratio of the catalyst component to the porous material is less than 1% by weight, the carbon monoxide removal ability is not sufficient. The porous body and the catalyst component may contain an additive such as a dispersant which may be surface-treated with a dispersant or the like. In addition, in order to prevent the specific surface area from decreasing during combustion, surface treatment such as oxidation treatment may be applied to metal compounds (supports, etc.).
たばこフィルタに対する、触媒成分を担持した多孔質体の添加量は、触媒成分の種類や使用形 態などに応じて選択でき、フィルタ素材 100重量部に対して 1〜500重量部、好ましくは 5〜200箪 量部（例えば、 10〜： 100重量部）程度である。触媒成分を担持した多孔質体の添加量が少ないと、 たばこ煙中の一酸化炭素に対する除去効率が低下し、多過ぎると喫味やフィルタの卷上げ作業性 を損なう虞がある。  The amount of the porous material carrying the catalyst component to the cigarette filter can be selected according to the type of catalyst component and usage, and is 1 to 500 parts by weight, preferably 5 to 100 parts by weight for the filter material. About 200 parts by weight (for example, 10 to 100 parts by weight). If the amount of the porous material carrying the catalyst component is small, the removal efficiency for carbon monoxide in the tobacco smoke is lowered, and if it is too much, the taste and the lifting workability of the filter may be impaired.
[0044]  [0044]
多孔質体に対する触媒成分の担持は、多孔質体に触媒成分を有効に担持できる限りは特に制 限されず、慣用の方法、例えば、塩化金酸 (HAuC14 )と金属酸化物に対応する金属の無機酸塩 (硝酸塩など)との混合水溶液に多孔質体を添加し、懸濁させ、その懸濁液を、アルカリ金属炭酸 塩 (炭酸ナトリウム)などの無機塩基の水溶液に加え、多孔質体表面に触媒成分を共沈、担持させ、 その後、触媒成分が担持された多孔質体を水洗、乾燥した後、焼成する方法などにより行うことが できる。 The support of the catalyst component on the porous body is not particularly limited as long as the catalyst component can be effectively supported on the porous body. For example, chlorauric acid (HAuC14) and a metal corresponding to the metal oxide can be supported. Inorganic acid salt A porous material is added to and suspended in a mixed aqueous solution (nitrate, etc.), and the suspension is added to an aqueous solution of an inorganic base such as alkali metal carbonate (sodium carbonate). The porous body on which the catalyst component is supported can be washed with water, dried, and then fired.
[0045]  [0045]
さらに、上記とは逆に、多孔質体を予め懸濁させた無機塩基の水溶液に、塩化金酸と金属酸化 物に対応する金属の無機酸塩との混合水溶液を加え、多孔質表面に触媒成分を共沈、担持させ、 その後、触媒成分が担持された多孔質体を水洗、乾燥した後、空気中で焼成する方法などが採用 できる。なお、多孔質体には、金属化合物および金触媒のうちいずれか一方の成分を担持させた 後、他方の成分を担持させてもよい。  Furthermore, contrary to the above, a mixed aqueous solution of chloroauric acid and a metal inorganic acid salt corresponding to a metal oxide is added to an aqueous solution of an inorganic base in which a porous body is suspended in advance, and a catalyst is formed on the porous surface. A method may be employed in which the components are coprecipitated and supported, and then the porous material on which the catalyst component is supported is washed with water, dried, and then fired in air. The porous body may be loaded with one component of the metal compound and the gold catalyst and then loaded with the other component.
上記より明らかなように、金属水酸化物と水酸化金を多孔質体表面に共沈又は析出 (又は沈着)さ せた後、焼成することにより金の (超)微粒子を担持させる場合が多レ、。 As is apparent from the above, gold (ultra) fine particles are often supported by co-precipitation or precipitation (or deposition) on the surface of the porous body and then firing. Les.
本発明において、前記多？ L質体に担持された触媒成分は、常温付近においても一酸化炭素に対 して髙 、触媒活性 (酸化活性)を示す。 In the present invention, the multiple? The catalyst component supported on the L-form shows catalytic activity (oxidation activity) against carbon monoxide even at around room temperature.
[0046]  [0046]
[担持体の混合]  [Mixing of support]
本発明にお！/ヽては、多孔質体が活性炭に触媒成分を担持した担持体とシリカゲルに触媒成分を 担持した担持体の混合物力 なる構成を取った場合に一酸化炭素除去能力が更に高めることが できる。特に、活性炭を担持体としてに酸化鉄に金微粒子を担持させた触媒成分とシリカゲル担持 体として酸化チタンに金微粒子を担持させた触媒成分を担持させたものの混合物がより一層一酸 ィ匕炭素除去性能を向上させることができる。  In the present invention! In other words, the carbon monoxide removal capability can be further enhanced when the porous body has a structure consisting of a mixture of a support having a catalyst component supported on activated carbon and a support having a catalyst component supported on silica gel. In particular, a mixture of a catalyst component in which gold fine particles are supported on iron oxide using activated carbon as a support and a catalyst component in which gold particles are supported on titanium oxide as a silica gel support is further removed. Performance can be improved.
本発明のたばこフィルタにおいては中間部に触媒成分を担持した多孔質体からなる担持体と他 の吸着剤を混合しても良い。混合する吸着剤としては、触媒成分を担持させていない多孔質体な どが好適にもちいることができる。  In the cigarette filter of the present invention, a carrier made of a porous material carrying a catalyst component in the middle may be mixed with another adsorbent. As the adsorbent to be mixed, a porous body not supporting a catalyst component can be suitably used.
[0047]  [0047]
[実施例] [Example]
[0048]  [0048]
以下に、たばこに適用した場合の効果を、実施例に基づいて本発明をより詳細に説明する力 本 発明はこれらの実施例によって限定されるものではない。なお、以下の実施例及び比較例におい て各特性 (通気抵抗、一酸化炭素)は、市販の煙草 [ピース ·ライト'ボックス (登録商標第 2122839 号）（日本たばこ産業株式会社製) ]を用いるかまたは、トウ繊維を開繊し、たばこ煙用チャコールフ ィルター製造用卷上げ機（ドイツ，ハウニネ: h¾, KDF2/AC1/AF1)を用いてトリァセチンを可塑剤と して巻き上げた。触媒または担持体の添加は上記の巻き上げ機の活性炭粉末添加装置を用 V、て 展着させた。各種物性は、下記の方法により測定した。 In the following, the effect when applied to cigarettes will be explained in more detail based on examples. The invention is not limited by these examples. In the following examples and comparative examples, commercially available cigarettes [Peace Light 'Box (Registered Trademark No. 2122839) (manufactured by Japan Tobacco Inc.)] are used for each characteristic (ventilation resistance, carbon monoxide). Alternatively, the tow fiber was opened, and triacetin was wound up as a plasticizer using a hoist for making cigarette smoke charcoal filters (Houine, Germany: h¾, KDF2 / AC1 / AF1). The catalyst or carrier was added using the activated carbon powder addition device of the above hoisting machine. Various physical properties were measured by the following methods.
[0049]  [0049]
[通気抵抗]  [Ventilation resistance]
上記のたばこ [ピース ·ライトボックス (登録商標第 2122839号） (日本たばこ産業株式会社製) ] およびこれを用いて作製したたばこサンプルの通気抵抗を、直接、たばこ葉の部分を含めたたばこ サンプルを用いて測定した。通気抵抗は、たばこサンプル内に、流量 17, 5mlZ秒で空気を通過 させたときの圧力損失 (mmWG)を、自動通気抵抗測定器 (フィルトローナ社製、 FTS300)を用い て測定した。  Tobacco resistance of the above tobacco [Peace Light Box (Registered Trademark No. 2122839) (made by Japan Tobacco Sangyo Co., Ltd.)] and cigarette samples made using the same And measured. The airflow resistance was measured by using an automatic airflow resistance measuring instrument (Filtona, FTS300) when a pressure loss (mmWG) was passed through the cigarette sample at a flow rate of 17.5 mlZ seconds.
[0050]  [0050]
[一酸化炭素除去率]  [Carbon monoxide removal rate]
たばこサンプルをピストンタイプの定容量型自動喫煙器 (ボルダワルド社製シングルタイプ）に装 着し、流量 17. 5ml/秒で喫煙時間 2秒 Z回、喫煙頻度 1回 分の条件で喫煙をい、 1回目から 7回目までの喫煙の主流煙をバッグに捕集し、 CO/C02アナライザー （ボルダワルド社製 CO/C02-Analyser C-24 )で、一酸化炭素濃度を分析した。この分析結果から、 1回目から 7回 目までの主流煙に含まれる一酸化炭素量を算出し、たばこサンプル 1本あたりの一酸化炭素量とし た。  A cigarette sample was attached to a piston-type constant-volume automatic smoker (single type manufactured by Boulder Wald), smoked at a flow rate of 17.5 ml / second, smoking time 2 seconds Z times, and smoking frequency 1 time. The mainstream smoke from the first to seventh smoking was collected in a bag, and the carbon monoxide concentration was analyzed with a CO / C02 analyzer (CO / C02-Analyser C-24 manufactured by Boulder Wald). From this analysis result, the amount of carbon monoxide contained in the mainstream smoke from the 1st to the 7th was calculated and used as the amount of carbon monoxide per cigarette sample.
対象品のたばこ一本あたりの一酸化炭素量を Tc、下記の比較例及び実施例で作製したたばこ サンプルの一本あたりの一酸化炭素量を Ccとして、一酸化炭素の除去率を算出した。 一酸化炭素除去率（％) = 100 X (Tc-Cc)/Tc  The carbon monoxide removal rate was calculated using Tc as the carbon monoxide amount per cigarette of the target product and Cc as the carbon monoxide amount per cigarette sample prepared in the following comparative examples and examples. Carbon monoxide removal rate (%) = 100 X (Tc-Cc) / Tc
[0051]  [0051]
(比較例 1)  (Comparative Example 1)
比較例 1では、触媒の担持されてない活性炭を用いた。活性炭は、日本エンバイ口ケミカルズ株 式会 「粒状活性炭 WH2CJを用いた。この活性炭の粒度は、 28メッシュパス 70メッシュオン が 95.3%であった。 In Comparative Example 1, activated carbon on which no catalyst was supported was used. Activated carbon is Nippon Enviguchi Chemicals Co., Ltd. “We used granular activated carbon WH2CJ. The particle size of this activated carbon was 95.3% at 28 mesh pass and 70 mesh on.
[0052]  [0052]
市販の煙草 [ピース 'ライト'ボックス (登録商標第 2122839号）（日本たばこ産業株式会社製) ] のセルロースジアセテート捲縮繊維トウのフィルタ本体（25mm)の末端から 14mmの部分をカミソ リで切断した。切断した長片すなわち、タバコ葉充填片のフィルタ部に長 20mm内径 8mmのガラ ス管を残フィルタ一長に相当する長さ（11mm)だけ挿入し、これらをシ一リングテープにて結束し た。  Cut 14mm from the end of the filter body (25mm) of cellulose diacetate crimped fiber tow of commercially available tobacco [Peace 'Light' Box (Registered Trademark No. 2122839) (made by Japan Tobacco Inc.)] did. A glass tube with a length of 20 mm and an inner diameter of 8 mm was inserted into the filter portion of the cut long piece, that is, the tobacco leaf filling piece, for a length (11 mm) corresponding to the length of the remaining filter, and these were bundled with sealing tape. .
[0053]  [0053]
このガラス管によって生じた 9mmの空間に上記活性炭 20Omgを充填した。次に先に切断した短 片すなわち、 14mmのフィルタ部（llOmg)を用いてガラス管に栓をした。そして、このガラス管とフ ィルタの接続部分にもシーリングテープを卷いて密閉した。したがって、セルロースジアセテート捲 縮繊維トウのフィルタの長さとしては、 25mmとなる。またフィルタ間の延長された 9mmの部分には 活性炭の粒子が充填されてレ、る状態とした。活性炭粒子の充填量は煙草一本当たり 200mgであ つた。  The 9 mm space created by this glass tube was filled with 20 Omg of the activated carbon. Next, the glass tube was plugged using the previously cut short piece, that is, the 14 mm filter part (llOmg). Sealing tape was also applied to the connection between the glass tube and the filter to seal it. Accordingly, the filter length of the cellulose diacetate crimped fiber tow is 25 mm. The extended 9 mm portion between the filters was filled with activated carbon particles. The charged amount of activated carbon particles was 200 mg per cigarette.
[0054]  [0054]
このたばこサンプルについて上記の通気抵抗、一酸ィ匕炭素量の測定を行った。そして、得られた 一酸化炭素除去率を前記式により算出した。結果を表 1に示す。なお、一酸化炭素除去率を評価 する際の対象品としては、活性炭を用いない以外は同様にして作製したたばこサンプルを用いた。  The cigarette sample was measured for the ventilation resistance and the amount of carbon monoxide. And the obtained carbon monoxide removal rate was computed by the said formula. The results are shown in Table 1. As a target product for evaluating the carbon monoxide removal rate, a tobacco sample prepared in the same manner except that activated carbon was not used was used.
[0055] [0055]
表 1 実施例および比較例の構成 Table 1 Configuration of Examples and Comparative Examples
Figure imgf000020_0001
Figure imgf000020_0001
(比較例 2) (Comparative Example 2)
比較例 2では、シリカゲルを用いた。シリカゲルは、キシダ化学株式会社より市販のシリカゲル白 色小粒を用いた。このシリカゲルの粒度は、 10メッシュパス 40メッシュオンが 98.2%であった。 比較例 1と同様にして、フィルタ間にシリカゲルを充填した。シリカゲルの充填量は煙草一本当たり 200mgであった。  In Comparative Example 2, silica gel was used. As silica gel, white silica gel particles commercially available from Kishida Chemical Co., Ltd. were used. The particle size of this silica gel was 98.2% at 10 mesh pass and 40 mesh on. In the same manner as in Comparative Example 1, silica gel was filled between the filters. The filling amount of silica gel was 200 mg per cigarette.
[0056]  [0056]
このたばこサンプルについて上記の通気抵抗、一酸化炭素量の測定を行った。そして、得られた 一酸ィ匕炭素の削減率を前記式により算出した。結果を表 1に示す。なお、一酸化炭素除去率を評 価する際の対象品としては、シリカゲルを用いない以外は同様にして作製したたばこサンプルを用 いた。 The cigarette sample was measured for the ventilation resistance and the amount of carbon monoxide. And the reduction rate of the obtained carbon monoxide carbon was computed by the said formula. The results are shown in Table 1. To evaluate the carbon monoxide removal rate, tobacco samples prepared in the same manner except that silica gel is not used are used. It was.
[0057]  [0057]
(比較例 3)  (Comparative Example 3)
断面 Y字状のフィラメント (2.2デニール)で構成されたセルロースアセテート繊維のトウ (トータル デニール 40000)を幅約 20cmに開繊し、たばこ煙用チヤコールフィルター製造用卷上げ機 (ドイツ, ハウ二社製， KDF2/AC1/AF1)の活性炭粉末添加装置を用いて、開繊したトウ 100重量部に対し て、触媒活性成分として金微粒子 (平均粒径 5nm)を 5%担持した酸化鉄粉末 (平均粒径 250 μ m) 50重量部をフィルター卷上げ時に均一に散布し、トウを紙卷装置に供給し、卷取紙を用いてト ゥを卷上げ速度 400m /分で卷上げ、得られたフィルタロッドをカッターで長さ 102mmに切断した。 得られたフィルターをさらに長さ 25mmに切断し、フィルターサンプルを作製した。  Cellulose acetate fiber tow (total denier 40000) composed of Y-shaped filaments (2.2 denier) is opened to a width of about 20cm, and is used to produce a cigarette filter for cigarette smoke (Howie, Germany) Using an activated carbon powder addition device (KDF2 / AC1 / AF1), iron oxide powder supporting 5% gold fine particles (average particle size 5 nm) as a catalytic active component per 100 parts by weight of the opened tow (average (Particle size 250 μm) 50 parts by weight were evenly sprayed when the filter was lifted, and the tow was fed to the paper mill, and the tow was lifted at a speed of 400 m / min. The filter rod was cut to a length of 102 mm with a cutter. The obtained filter was further cut to a length of 25 mm to produce a filter sample.
[0058]  [0058]
(比較例 4)  (Comparative Example 4)
断面 Y字状のフィラメント（3. 0デニ一ル)で構成されたセルロースアセテート繊維のトウ（トータル デニール 37000)を幅約 25cmに開繊し、たばこ煙用チヤコールフィルター製造用卷上げ機 (ドィ ッ， ヽゥ二社製， KDF2/AC1/AF1)の活性炭粉末添加装置を用いて、開繊したトウ 100重量部に 対して、触媒担持活性炭 190重量部をフィルター卷上げ時に均一に散布し、トウを紙卷装置に供 給し、卷取紙を用いてトウを巻上げ速度 400m/分で卷上げ、得られたフィルタロッドをカッターで 長さ 100mmに切断した。得られたフィルターをさらに長さ 20mmに切断し、フィルターサンプルを 作製した。  Opening a cellulose acetate fiber tow (total denier 37000) composed of Y-shaped filaments (3.0 denier) to a width of about 25 cm Using the activated carbon powder addition device of YF, Kyuni Co., Ltd., KDF2 / AC1 / AF1), apply 190 parts by weight of catalyst-supported activated carbon to 100 parts by weight of the opened tow evenly when lifting the filter. The tow was fed to a paper punching device, the tow was lifted at a speed of 400 m / min using a paper roll, and the obtained filter rod was cut into a length of 100 mm with a cutter. The obtained filter was further cut to a length of 20 mm to produce a filter sample.
なお、触媒担持活性炭としては、触媒活性成分 [金微粒子 (平均粒径 4nm) 5%と酸化鉄との共 沈粉末] 15重量％を担持した活性炭 (平均粒径 450 β m、比表面積 1000πι2 /%)を用いた。  In addition, as the catalyst-supported activated carbon, active carbon (average particle diameter 450 βm, specific surface area 1000πι2 / %) Was used.
[0059] .  [0059].
(実施例 1)  (Example 1)
活性炭担持触媒 （Au/Fe203/活性炭） Activated carbon supported catalyst (Au / Fe 2 0 3 / activated carbon)
塩化金酸 4水塩 (HAuCl4'4H2O)0.5gを蒸留水 500mlに溶解した (水溶液 A)。硝酸第三鉄 9水 塩 (Fe(N03)3'9H20)を蒸留水 500mlに溶解した (水溶液 B)。水溶液 Aと Bを混合し、攪拌しながら、 70°Cに加熱し、活性炭 (粒状活性炭 WH2C 日本エンバイ口ケミカルズ株式会社製 粒度 28メ ッシュパス 70メッシュオンが 95.3%)5gを添加し、温度を 70°Cに保ち、さらに 1時間攪拌した (分 散液 。炭酸ナトリウ (Na2C03)6.5gを蒸留水 500mlに溶解 攪拌しながら、 70°Cに加熱した (水 溶液 D)。 70°Cに保ったまま攪拌しながら、水溶液 Dに、分散液 Cを一気に加え混合し、温度を 70°Cに保ち、 1時間攪拌した。 0.5 g of chloroauric acid tetrahydrate (HAuCl 4 '4H 2 O) was dissolved in 500 ml of distilled water (aqueous solution A). Ferric nitrate 9-hydrate (Fe (N0 3 ) 3 '9H 2 0) was dissolved in 500 ml of distilled water (aqueous solution B). Aqueous solution A and B are mixed, heated to 70 ° C with stirring, and 5 g of activated carbon (granular activated carbon WH2C, particle size 28 mesh pass 70 mesh on, 95.3% from Nippon Enviguchi Chemicals Co., Ltd.) is added, and the temperature is adjusted to 70 Keep at ° C and stir for another hour (min Sprinkling. 6.5 g of sodium carbonate (Na2C03) was dissolved in 500 ml of distilled water and heated to 70 ° C. with stirring (aqueous solution D). While stirring at 70 ° C, the dispersion C was added to the aqueous solution D at a stretch and mixed, and the temperature was kept at 70 ° C and stirred for 1 hour.
[0060]  [0060]
固形分をろ別し、塩素イオンが検出されないレベルまで、蒸留水を用いて、充分に洗浄し、乾燥 器により 105°Cで充分に乾燥した後、電気炉を用いて、 300°Cで 5時間焼成し、活性炭担持触媒 (Au/Fe203/活性炭)を得た。このものの金含量は 1.6重量％、酸化鉄含量は 12.2重量％であった。 Solids are filtered off, washed thoroughly with distilled water to a level at which chlorine ions are not detected, thoroughly dried at 105 ° C with a drier, and then 5 ° C at 300 ° C with an electric furnace. and baking time, to obtain an activated carbon supported catalyst (Au / Fe 2 0 3 / activated carbon). The gold content was 1.6% by weight and the iron oxide content was 12.2% by weight.
[0061]  [0061]
比較例 1と同様にして、この活性炭担持触媒 (Au/Fe203/活性炭) 200mgをフィルタ間に充填し、 たばこサンプルを作製した。このたばこサンプルについて上記の通気抵抗、一酸化炭素量の測定 を行った。そして、得られた一酸化炭素の除去率を前記式により算出した。結果を表 2に示す。な お、一酸化炭素除去率を評価する際の対象品としては、触媒を用いない以外は同様にして作製し たたばこサンプルを用レヽた。 In the same manner as in Comparative Example 1, the activated carbon supported catalyst of (Au / Fe 2 0 3 / active carbon) 200 mg was filled between the filter, to prepare a tobacco sample. The cigarette sample was measured for the ventilation resistance and carbon monoxide content. And the removal rate of the obtained carbon monoxide was computed by the said formula. The results are shown in Table 2. As a target product for evaluating the carbon monoxide removal rate, a tobacco sample prepared in the same manner except that no catalyst was used was used.
[0062]  [0062]
(実施例 2)  (Example 2)
活性炭担持触媒 （Au/Ti02/活性炭） Activated carbon supported catalyst (Au / Ti0 2 / activated carbon)
塩化金酸 水塩 (HAuCl4'4H2O)0.5gをエタノール 500mlに溶解した (エタノール溶液 A)。チタン テトライソプロピルオキサイド (Ti(0—イソプロピル )413.5mlをエタノール 500mlに溶解した (エタノー ル溶液 B)。エタノール溶液 Aと Bを混合し、攪拌しながら、 70°Cに加熱し、活性炭 (粒状活性炭 WH2C 日本エンバイ口ケミカルズ株式会社製 粒度 28メッシュパス 70メッシュオンが 0.5 g of chloroauric acid hydrochloride (HAuCl 4 '4H 2 O) was dissolved in 500 ml of ethanol (ethanol solution A). Titanium tetraisopropyl oxide (Ti (0-isopropyl) 4 13.5ml was dissolved in ethanol 500ml (ethanol solution B). Ethanol solutions A and B were mixed, heated to 70 ° C with stirring, activated carbon (granular Activated charcoal WH2C Nihon Enviguchi Chemicals Co., Ltd. Grain size 28 mesh pass 70 mesh on
95.3% )3.0gを添加し、温度を 70°Cに保ち、さらに 1時間攪拌した (エタノール分散液 C)。炭酸ナ トリウ (N¾CO3)3.0gを蒸留水 300mlに溶解し、攪拌しながら、 70°Cに加熱した (水溶液 D)。 70°Cに 保ったまま攪拌しながら、水溶液 Dに、エタノール分散液 Cを一気に加え混合し、温度を 70°Cに 保ち、 1 時間攪拌した。固形分をろ別し、塩素イオンが検出されないレベルまで、蒸留水を用いて、 充分に洗净し、乾燥器により 105°Cで充分に乾燥した後、電気炉を用いて、 300°Cで 5時間焼成し、 活性炭担持触媒 (Au/ Ti02 /活性炭)を得た。このものの金含量は 4.,3重量 %、酸化チタン含量は 33,5重量0 /0であった。 95.3%) 3.0 g was added, the temperature was kept at 70 ° C., and the mixture was further stirred for 1 hour (ethanol dispersion C). 3.0 g of sodium carbonate (N¾CO 3 ) was dissolved in 300 ml of distilled water and heated to 70 ° C. with stirring (aqueous solution D). While stirring at 70 ° C, ethanol dispersion C was added to aqueous solution D at a stretch and mixed, and the temperature was kept at 70 ° C and stirred for 1 hour. Solids are filtered off, washed thoroughly with distilled water to a level at which chlorine ions are not detected, thoroughly dried at 105 ° C with a dryer, and then at 300 ° C with an electric furnace. It was fired for 5 hours to obtain an activated carbon supported catalyst (Au / Ti0 2 / charcoal). Gold content of this product 4., 3 wt%, titanium oxide content was 33,5 wt 0/0.
[0063] 比較例 1と同様にして、この活性炭担持触媒 (Au/ Ti02 /活性炭) 200mgをフィルタ間に充填し、 たばこサンプルを作製した。このたばこサンプルについて上記の通気抵抗、一酸化炭素量の測定 を行った。そして、得られた一酸化炭素除去率を前記式により算出した。結果を表 2に示す。なお、 —酸化炭素除去率を評価する際の対象品としては、触媒を用いない以外は同様にして作製したた ばこサンプルを用いた。 [0063] In the same manner as in Comparative Example 1, the activated carbon supported catalyst of (Au / Ti0 2 / charcoal) 200 mg was filled between the filter, to prepare a tobacco sample. The cigarette sample was measured for the ventilation resistance and carbon monoxide content. And the obtained carbon monoxide removal rate was computed by the said formula. The results are shown in Table 2. As a target product for evaluating the carbon oxide removal rate, a tobacco sample prepared in the same manner except that no catalyst was used was used.
[0064]  [0064]
(実施例 3)  (Example 3)
シリカゲル担持触媒 （Au/Fe203/シリカゲル） Silica gel supported catalyst (Au / Fe 2 0 3 / silica gel)
塩化金酸 4水塩 (HAuCl4'4H2O)0.5gを蒸留水 500mlに溶解した (水溶液 A)。硝酸第三鉄 9水 塩 (Fe(N03)3'9H20)を蒸留水 500mlに溶解した (水溶液 B)。水溶液 Aと Bを混合し、攪拌しながら、 70°Cに加熱し、シリカゲル (シリカゲル白色小粒 キシダ化学株式会社 粒度 10メッシュパス 40メ ッシユオン 98.2% )5gを添加し、温度を 70°Cに保ち、さらに 1時間攪拌した (分散液 C)。炭酸ナ トリウ (Na2C03)6.5gを蒸留水 500mlに溶解し、攪拌しながら、 70°Cに加熱した (水溶液 D)。 70°Cに 保ったまま攪拌しながら、水溶液 Dに、分散液 Cを一気に加え混合し、温度を 70°Cに保ち、 1時 間攪拌した。固形分をろ別し、塩素イオンが検出されないレベルまで、蒸留水を用いて、充分に洗 浄し、乾燥器により 105°Cで充分に乾燥した後、電気炉を用いて、 300°Cで 5時間焼成し、活性炭 担持触媒 (Au/Fe203/シリカゲル)を得た。このものの金含量は 1.5重 ¾%、酸化鉄含量は 11.8重 量％であった。 0.5 g of chloroauric acid tetrahydrate (HAuCl 4 '4H 2 O) was dissolved in 500 ml of distilled water (aqueous solution A). Ferric nitrate 9-hydrate (Fe (N0 3 ) 3 '9H 2 0) was dissolved in 500 ml of distilled water (aqueous solution B). Aqueous solution A and B are mixed, heated to 70 ° C with stirring, and 5 g of silica gel (silica gel white small particle Kishida Chemical Co., Ltd., particle size 10 mesh pass, 40 mesh 98.2%) is added, and the temperature is maintained at 70 ° C. The mixture was further stirred for 1 hour (dispersion C). 6.5 g of sodium carbonate (Na2C03) was dissolved in 500 ml of distilled water and heated to 70 ° C. with stirring (aqueous solution D). While stirring at 70 ° C, dispersion C was added to and mixed with aqueous solution D at a stretch, and the temperature was maintained at 70 ° C and stirred for 1 hour. Solids are filtered off, washed thoroughly with distilled water to a level at which chlorine ions are not detected, sufficiently dried at 105 ° C with a dryer, and then at 300 ° C with an electric furnace. Calcination was carried out for 5 hours to obtain an activated carbon-supported catalyst (Au / Fe203 / silica gel). This product had a gold content of 1.5 wt% and an iron oxide content of 11.8 wt%.
[0065]  [0065]
比較例 1と同様にして、このシリカゲル担持触媒 (Au/Fe203/シリカゲル) 200mgをフィルタ間に充 填し、たばこサンプルを作製した。このたばこサンプルについて上記の通気抵抗、一酸化炭素量 の測定を行った。そして、得られた一酸化炭素除去率を前記式により算出した。結果を表 2に示す。 なお、一酸化炭素除去率を評価する際の対象品としては、触媒を用いない以外は同様にして作製 したたばこサンプレを用レヽた。  In the same manner as in Comparative Example 1, 200 mg of this silica gel-supported catalyst (Au / Fe203 / silica gel) was packed between filters to prepare a tobacco sample. The cigarette sample was measured for the airflow resistance and carbon monoxide content. And the obtained carbon monoxide removal rate was computed by the said formula. The results are shown in Table 2. As a target product for evaluating the carbon monoxide removal rate, a tobacco sample prepared in the same manner except that no catalyst was used was used.
[0066]  [0066]
(実施例 4)  (Example 4)
シリカゲル担持触媒 （Au/Ti02/シリカゲル） Silica gel supported catalyst (Au / Ti0 2 / silica gel)
塩化金酸 4水塩 (HAuCl4'4H2O)0.5gをエタノール 500mlに溶解した (エタノール溶液 A：)。チタン テトライソプロピルオキサイド (Ti(0 fソプロピル )413.5mlをエタノール 500mlに溶解した (エタノー ル溶液 B)。エタノール溶液 Aと Bを混合し、攪拌しながら、 70°Cに加熱し、シリカゲル (MB1000相 当破砕状品、富士シリシァ化学株式会社製、粒度 16メッシュパス 32メッシュオン 98.9% )3g を添加し、温度を 70°Cに保ち、さらに 1時間攪拌した (エタノール分散液 C)。炭酸ナトリウ 0.5 g of chloroauric acid tetrahydrate (HAuCl 4 '4H 2 O) was dissolved in 500 ml of ethanol (ethanol solution A :). titanium Tetraisopropyl oxide (Ti (0 fsopropyl) 4 13.5ml was dissolved in ethanol 500ml (ethanol solution B) Ethanol solutions A and B were mixed and heated to 70 ° C with stirring to silica gel (MB1000 phase 3 g of this crushed product, manufactured by Fuji Silysia Chemical Co., Ltd., particle size 16 mesh pass 32 mesh on 98.9%) was added, and the temperature was kept at 70 ° C, and the mixture was further stirred for 1 hour (ethanol dispersion C).
(Na2CO3)3.0gを蒸留水 300mlに溶解し、攪拌しながら、 70°Cに加熱した (水溶液 D)。 70°Cに保つ たまま攪拌しながら、水溶液 Dに、エタノール分散液 Cを一気に加え混合し、温度を 70°Cに保ち、 1時間攪拌した。固形分をろ別し、塩素イオンが検出されなレ、レベルまで、蒸留水を用いて、充分 に洗浄し、乾燥器により 105°Cで充分に乾燥した後、電気炉を用いて、 300°Cで 5時間焼成し、シ リカゲル担持触媒 (Au/Ti02/シリカゲル)を得た。このものの金含量は 4..1重量 %、酸化チタン含量 は 31.5重量％であった。 3.0 g of (Na 2 CO 3 ) was dissolved in 300 ml of distilled water and heated to 70 ° C. with stirring (aqueous solution D). While stirring at 70 ° C, ethanol dispersion C was added to and mixed with aqueous solution D at a stretch, and the temperature was kept at 70 ° C and stirred for 1 hour. The solid content is filtered off, washed thoroughly with distilled water to a level where no chlorine ions are detected, dried thoroughly at 105 ° C with a dryer, and then 300 ° C using an electric furnace. It was fired for 5 hours in C, and to obtain a sheet Rikageru supported catalyst (Au / Ti0 2 / silica gel). The gold content was 4.1.1% by weight and the titanium oxide content was 31.5% by weight.
[0067]  [0067]
比較例 1と同様にして、このシリカゲル担持触媒 (Au/Ti02/シリカゲル) 200mgをフィルタ間に充填 し、たばこサンプルを作製した。このたばこサンプルについて上記の通気抵抗、一酸化炭素量の 測定を行った。そして、得られた一酸化炭素除去率を前記式により算出した。結果を表 2に示す。 なお、一酸化炭素除去率を評価する際の対象品としては、触媒を用いない以外は同様にして作製 したたばこサンプルを用レヽた。 In the same manner as in Comparative Example 1, the silica gel supported catalyst (Au / Ti0 2 / silica gel) 200 mg was filled between the filter, to prepare a tobacco sample. The cigarette sample was measured for the ventilation resistance and the amount of carbon monoxide. And the obtained carbon monoxide removal rate was computed by the said formula. The results are shown in Table 2. As a target product for evaluating the carbon monoxide removal rate, a tobacco sample prepared in the same manner except that no catalyst was used was used.
(実施例 5) (Example 5)
担持触媒ブレンド （Au/Fe203/活性炭） +(Au/Ti02/シリカゲル） Supported catalyst blend (Au / Fe 2 0 3 / activated carbon) + (Au / Ti0 2 / silica gel)
実施例 1と実施例 4で作製した担持触媒各 lOOmg (合計で 200mg)を、比較例 1と同様にして、フ ィルタ間に充填し、たばこサンプルを作製した。このたばこサンプルについて上記の通気抵抗、一 酸化炭素量の測定を行った。そして、得られた一酸化炭素除去率を前記式により算出した。結果 を表 2に示す。なお、一酸化炭素除去率を評価する際の対象品としては、触媒を用いない以外は 同様にして作製したたばこサンプルを用いた。  Each lOOmg (total 200 mg) of the supported catalyst prepared in Example 1 and Example 4 was filled between filters in the same manner as in Comparative Example 1 to prepare a tobacco sample. The cigarette sample was measured for the ventilation resistance and the amount of carbon monoxide. And the obtained carbon monoxide removal rate was computed by the said formula. The results are shown in Table 2. In addition, as a target product for evaluating the carbon monoxide removal rate, a tobacco sample prepared in the same manner except that no catalyst was used was used.
[0068] 通気抵抗値及び一酸化炭素除去率 [0068] Ventilation resistance and carbon monoxide removal rate
Figure imgf000025_0001
Figure imgf000025_0001
[0069] [0069]
表 1および表 2から明らかな通り、比較例に比べ実施例では一酸化炭素除去率が高ぐ一酸化炭 素除去性能が高レ、。また通気抵抗値も低くたばこのフィルタとして好適である。  As is clear from Table 1 and Table 2, the carbon monoxide removal rate is higher in the examples than in the comparative examples, and the carbon monoxide removal performance is higher. Moreover, it is suitable as a cigarette filter having a low ventilation resistance value.
産業上の利用可能性  Industrial applicability
本発明のたばこフィルタは、たばこ煙中に含まれる一酸化炭素を効率良く二酸ィ匕短度に変換で きかつ、通気抵抗を挙げないので低タールたばこなどにも適用可能である。  The cigarette filter of the present invention can be efficiently applied to carbon monoxide contained in cigarette smoke, and can be applied to low tar cigarettes and the like because it does not increase ventilation resistance.

Claims

請求の範囲 The scope of the claims
1.少なくとも 3個の部分力も構成されているたばこフィルタであって、中間部に触媒成分を担持し た多孔質体からなる担持体が配置され、前記触媒成分が金属ィ匕合物と金微粒子とで構成されて 、るたは ^こフイノレタ。  1. A cigarette filter having at least three partial forces, wherein a support made of a porous material supporting a catalyst component is disposed in an intermediate portion, and the catalyst component includes a metal compound and gold fine particles. It is composed of and Ruta is Koinoleta.
2.触媒成分を担持する多孔質体が粒状物である請求項 1記載のたばこフィルタ。 ' 2. The tobacco filter according to claim 1, wherein the porous body supporting the catalyst component is a granular material. '
3.中間部の通気抵抗値に対して両端部の通気抵抗値が大きレ、ことを特徴とする請求項 2に記載 のたばこフィルタ。 3. The cigarette filter according to claim 2, wherein the airflow resistance value at both ends is larger than the airflow resistance value at the middle part.
4.粒状物である担持体の粒度として、 10メッシュを通過し 70メッシュを通らない範囲 (10メッシュ パス 70メッシュオン）の含有量が 90重量％以上である請求項 2に記載のたばこフィルタ。 4. The tobacco filter according to claim 2, wherein the content of the carrier, which is a granular material, is 90% by weight or more in a range of passing through 10 mesh and not passing through 70 mesh (10 mesh pass 70 mesh on).
5.両端部がセルロースエステル繊維を含むトウ構造のフィルターロッドから構成されてレ、る請求項 3に記載のたばこフィルタ。 5. The cigarette filter according to claim 3, wherein both ends are composed of tow structure filter rods containing cellulose ester fibers.
6.触媒成分を担持した担持体が少なくとも活性炭または/及びシリカゲルに触媒成分を担持した 担持体を含む請求項 2に記載のたばこフィルタ。 6. The tobacco filter according to claim 2, wherein the carrier carrying the catalyst component includes a carrier carrying the catalyst component on at least activated carbon and / or silica gel.
7.触媒成分を 持された多孔質体が活性炭に触媒成分を担持した担持体とシリカゲルに触媒成 分を担持した担持体の混合物力 なる請求項 6に記載のたばこフィルタ。 7. The tobacco filter according to claim 6, wherein the porous body carrying the catalyst component is a mixture force of the carrier carrying the catalyst component on activated carbon and the carrier carrying the catalyst component on silica gel.
PCT/JP2007/065876 2006-08-10 2007-08-08 Cigarette filter WO2008018617A1 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010213655A (en) * 2009-03-18 2010-09-30 Daicel Chem Ind Ltd Cigarette filter material, and cigarette filter using the same
EP2629633A1 (en) * 2010-10-06 2013-08-28 Celanese Acetate LLC Smoke filters for smoking devices with porous masses having a carbon particle loading and an encapsulated pressure drop
CN106061296A (en) * 2013-12-30 2016-10-26 菲利普莫里斯生产公司 Activated carbon for smoking articles
CN108936800A (en) * 2018-06-08 2018-12-07 湖南中烟工业有限责任公司 Tobacco hollow bead and preparation method thereof and cigarette filter rod
WO2019122468A1 (en) 2017-12-21 2019-06-27 Universidad De Alicante Combined filter for removing tars and toxic compounds from tobacco smoke

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6028823A (en) * 1983-07-26 1985-02-14 Japan Tobacco Inc Manufacture of carbon monoxide oxidizing catalyst
JPS60216843A (en) * 1984-04-03 1985-10-30 Patent Puromooto Center:Kk Catalytic filter for oxidizing reducing gas
JPH01228557A (en) * 1988-03-10 1989-09-12 Nibetsukusu Kk Oxidation catalyst, manufacture thereof and smoking filter
JPH09140370A (en) * 1995-11-21 1997-06-03 Daicel Chem Ind Ltd Tobacco element and its production
JPH11235169A (en) * 1998-02-23 1999-08-31 Daicel Chem Ind Ltd Tobacco element and its production
JP2000210069A (en) * 1999-01-22 2000-08-02 Japan Tobacco Inc Cigarette filter
WO2003013287A1 (en) * 2001-08-02 2003-02-20 Japan Tobacco Inc. Filter for cigarette

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6028823A (en) * 1983-07-26 1985-02-14 Japan Tobacco Inc Manufacture of carbon monoxide oxidizing catalyst
JPS60216843A (en) * 1984-04-03 1985-10-30 Patent Puromooto Center:Kk Catalytic filter for oxidizing reducing gas
JPH01228557A (en) * 1988-03-10 1989-09-12 Nibetsukusu Kk Oxidation catalyst, manufacture thereof and smoking filter
JPH09140370A (en) * 1995-11-21 1997-06-03 Daicel Chem Ind Ltd Tobacco element and its production
JPH11235169A (en) * 1998-02-23 1999-08-31 Daicel Chem Ind Ltd Tobacco element and its production
JP2000210069A (en) * 1999-01-22 2000-08-02 Japan Tobacco Inc Cigarette filter
WO2003013287A1 (en) * 2001-08-02 2003-02-20 Japan Tobacco Inc. Filter for cigarette

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010213655A (en) * 2009-03-18 2010-09-30 Daicel Chem Ind Ltd Cigarette filter material, and cigarette filter using the same
EP2629633A1 (en) * 2010-10-06 2013-08-28 Celanese Acetate LLC Smoke filters for smoking devices with porous masses having a carbon particle loading and an encapsulated pressure drop
EP2636319A3 (en) * 2010-10-06 2014-03-12 Celanese Acetate LLC Smoke filters for smoking devices with porous masses having a carbon particle loading and an encapsulated pressure drop
EP2629633A4 (en) * 2010-10-06 2014-04-16 Celanese Acetate Llc Smoke filters for smoking devices with porous masses having a carbon particle loading and an encapsulated pressure drop
CN106061296A (en) * 2013-12-30 2016-10-26 菲利普莫里斯生产公司 Activated carbon for smoking articles
WO2019122468A1 (en) 2017-12-21 2019-06-27 Universidad De Alicante Combined filter for removing tars and toxic compounds from tobacco smoke
CN108936800A (en) * 2018-06-08 2018-12-07 湖南中烟工业有限责任公司 Tobacco hollow bead and preparation method thereof and cigarette filter rod
CN108936800B (en) * 2018-06-08 2021-03-09 湖南中烟工业有限责任公司 Tobacco hollow particle, preparation method thereof and cigarette filter stick

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