JP2615196B2 - Method for producing activated ozone deodorizing catalyst - Google Patents
Method for producing activated ozone deodorizing catalystInfo
- Publication number
- JP2615196B2 JP2615196B2 JP1105774A JP10577489A JP2615196B2 JP 2615196 B2 JP2615196 B2 JP 2615196B2 JP 1105774 A JP1105774 A JP 1105774A JP 10577489 A JP10577489 A JP 10577489A JP 2615196 B2 JP2615196 B2 JP 2615196B2
- Authority
- JP
- Japan
- Prior art keywords
- catalyst
- ozone deodorizing
- ozone
- deodorizing catalyst
- producing activated
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
Links
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は活性化されたオゾン脱臭触媒の製造方法に関
し、特に下水、し尿、ごみ焼却施設から発生する臭気を
オゾン脱臭するに際して使用するに適した活性化オゾン
脱臭触媒の製造方法に関する。Description: TECHNICAL FIELD The present invention relates to a method for producing an activated ozone deodorizing catalyst, which is particularly suitable for use in deodorizing odors generated from sewage, human waste, and refuse incineration facilities. And a method for producing an activated ozone deodorizing catalyst.
悪臭成分を気相中でオゾンにより酸化分解するオゾン
脱臭（悪臭の除去）方法が既に提供されているが、（特
公昭63〜39283号公報）この提案方法では、炭素質材料
からなる担体上に金属酸化物を担持させた触媒層を複数
層直列に配設し、かつ、該各層の前部にそれぞれオゾン
注入手段を設けることが特徴の１つになつている。An ozone deodorizing (removing offensive odor) method of oxidizing and decomposing malodorous components with ozone in the gas phase has already been provided (JP-B-63-39283). One of the features is that a plurality of catalyst layers supporting a metal oxide are arranged in series, and ozone injection means is provided in front of each of the layers.
この提案方法でいう触媒とは、例えば粒状、破砕状ま
たは粉末状活性炭、グラフアイト、炭素繊維などからな
る触媒担体上に、バナジウム、クロム、マンガン、鉄、
コバルト、ニツケル、銅、銀、亜鉛などの金属酸化物の
１種以上を担持させたもので、必要に応じて白金、パラ
ジウム、ロジウム、ルテニウムなどを助触媒としてこの
金属酸化物と共に担持させているものである。The catalyst referred to in the proposed method is, for example, granulated, crushed or powdered activated carbon, graphite, on a catalyst carrier composed of carbon fiber, etc., vanadium, chromium, manganese, iron,
One or more metal oxides such as cobalt, nickel, copper, silver, and zinc are supported, and platinum, palladium, rhodium, ruthenium, and the like are supported as cocatalysts together with the metal oxides as necessary. Things.
この提案方法では触れていないが、上記触媒を製造す
るためには、触媒活性金属酸化物と担体とを成形、乾燥
後、還元雰囲気条件下での焼成が必要になり、高活性な
触媒を連続して安定製造するのは容易でない面があつ
た。Although not described in this proposed method, in order to produce the above-mentioned catalyst, it is necessary to form and dry the catalytically active metal oxide and the carrier, and then calcinate under a reducing atmosphere condition. There is a face that it is not easy to manufacture stably.
本発明は、上記技術水準に鑑み、従来のオゾン脱臭触
媒より高活性で、かつ、連続して安定した性能をもつオ
ゾン脱臭触媒の製造方法を提供しようとするものであ
る。The present invention has been made in view of the above technical level, and has as its object to provide a method for producing an ozone deodorizing catalyst having higher activity than conventional ozone deodorizing catalysts and having continuously stable performance.
本発明はバナジウム、クロム、マンガン、鉄、コバル
ト、ニッケル、銅、銀及び亜鉛からなる群から選ばれる
１種以上の金属の酸化物を炭素質材料に担持してなるオ
ゾン脱臭触媒を、還元溶液で処理したのち乾燥すること
を特徴とする活性化オゾン脱臭触媒の製造方法である。The present invention provides an ozone deodorizing catalyst comprising an oxide of one or more metals selected from the group consisting of vanadium, chromium, manganese, iron, cobalt, nickel, copper, silver and zinc supported on a carbonaceous material, a reducing solution. And drying the treated ozone deodorizing catalyst.
本発明でいう１種以上の金属酸化物を炭素質材料に担
持したオゾン脱臭触媒とは、粒状、破砕状または粉末状
活性炭、グラフアイト、炭素繊維などからなる担体上
に、活性成分としてバナジウム、クロム、マンガン、
鉄、コバルト、ニツケル、銅、銀及び亜鉛からなる群か
ら選ばれる金属酸化物の１種以上の担持させたものを成
形、乾燥、焼成してなるものであり、必要に応じて白
金、パラジウム、ロジウム、ルテニウムなどを助触媒と
して前記金属酸化物と共に担持させたものであってもよ
い。The ozone deodorizing catalyst in which one or more metal oxides are supported on a carbonaceous material according to the present invention is a granular, crushed or powdered activated carbon, graphite, a carrier made of carbon fiber or the like, and vanadium as an active ingredient. Chromium, manganese,
Iron, cobalt, nickel, copper, silver and one or more metal oxides selected from the group consisting of zinc supported, formed, dried, calcined, if necessary platinum, palladium, Rhodium, ruthenium, or the like may be supported as a promoter together with the metal oxide.
本発明の触媒の製造方法は、上記公知のオゾン脱臭触
媒を還元溶液で処理した後、乾燥するものであるが、還
元溶液とはホルムアルデヒド水溶液、アセトアルデヒド
などの低沸点アルデヒド水溶液、ヒドロキシルアミン、
アスコロビン酸などの水溶性還元剤が用いられる。還元
溶液処理後の乾燥は酸化を防ぐため、一般的に100〜180
℃、好ましくは105〜150℃で行うのが好ましく、触媒細
孔内に残留する還元溶液を除去するためにも減圧下で行
うのが好ましい。The method for producing the catalyst of the present invention is a method in which the above-mentioned known ozone deodorizing catalyst is treated with a reducing solution and then dried.The reducing solution is a formaldehyde aqueous solution, a low boiling aldehyde aqueous solution such as acetaldehyde, hydroxylamine,
A water-soluble reducing agent such as ascorbic acid is used. Drying after reducing solution treatment is generally 100-180 to prevent oxidation.
C., preferably at 105 to 150 ° C., and preferably under reduced pressure in order to remove the reducing solution remaining in the catalyst pores.
前記した１種以上の金属酸化物を炭素質材料に担持し
た触媒を還元溶液で処理することによつて、前記触媒担
体に担持した金属酸化物は部分還元され、このような状
態になつた触媒は悪臭成分を酸化分解するオゾン脱臭法
における有効な触媒として作用する。By treating a catalyst in which one or more metal oxides are supported on a carbonaceous material with a reducing solution, the metal oxides supported on the catalyst carrier are partially reduced, and the catalyst in such a state is obtained. Acts as an effective catalyst in the ozone deodorization method for oxidatively decomposing malodorous components.
以下、本発明の製造方法による活性化オゾン脱臭触媒
の製造例の概要を第１図によつて説明する。第１図にお
いて、M1は触媒活性体となる金属酸化物の出発原料、M2
は触媒担体、M3は還元剤溶液、M4は製品、１は従来触媒
製造工程、２は還元処理工程、３は乾燥工程を示す。Hereinafter, an outline of a production example of an activated ozone deodorizing catalyst according to the production method of the present invention will be described with reference to FIG. In FIG. 1, M 1 is a starting material of a metal oxide serving as a catalytically active substance, M 2
Catalyst carrier, M 3 is a reducing agent solution, M 4 product, 1 conventional catalyst manufacturing process, 2 reduction treatment step, 3 denotes a drying step.
触媒活性体出発原料M1と触媒担体M2を含浸法又は混練
法によつて成形後（成形はペレツト状、ハニカム状、繊
維布状いづれでもよい）、乾燥・焼成する従来触媒製造
工程１を経たのち、還元工程２において還元処理する。
ここでは、還元剤を含む溶液中に上記触媒製造工程１を
経由した触媒を浸漬、十分にかきまぜして還元処理操作
を行なうことにある。還元剤としては、例えばホルムア
ルデヒド水溶液、アセトアルデヒドの低沸点アルデヒド
類、ヒドロキシアミン、アスコロビン酸など、とくに水
溶性還元剤が好ましい。また、還元剤の濃度は0.1〜10w
t％、好ましくは0.5〜5wt％がよく、触媒重量に対して
１〜５倍（重量）、好ましくは１〜３倍がよい。溶液温
度は室温でよいが、効果を高めるため、30〜40℃に上げ
ることもできる。ただし、その場合は還元剤の蒸発が起
ることもあるので注意を要す。浸漬時間は適宜、金属酸
化物の還元処理状態に合せて調整することになるが、概
ね１〜10時間である。After I connexion molding the catalytic active form starting material M 1 and the catalyst carrier M 2 to the impregnation method or kneading method (molding Peretsuto shape, a honeycomb shape, may be Izure fiber cloth), a conventional catalyst manufacturing process 1, dried and calcined After that, a reduction treatment is performed in a reduction step 2.
Here, the reduction treatment operation is performed by immersing the catalyst having passed through the above-described catalyst production step 1 in a solution containing a reducing agent, and sufficiently stirring the mixture. As the reducing agent, for example, a water-soluble reducing agent such as formaldehyde aqueous solution, low boiling point aldehydes of acetaldehyde, hydroxyamine, and ascorbic acid is preferable. In addition, the concentration of the reducing agent is 0.1 to 10 w
t%, preferably 0.5 to 5 wt%, and 1 to 5 times (weight), preferably 1 to 3 times, the weight of the catalyst. The solution temperature may be room temperature, but can be raised to 30 to 40 ° C. to enhance the effect. However, in that case, care must be taken because the reducing agent may evaporate. The immersion time is appropriately adjusted according to the reduction treatment state of the metal oxide, but is generally about 1 to 10 hours.
つぎに、還元処理した触媒は100〜180℃、好ましくは
105〜150℃の雰囲気下で乾燥する。乾燥の促進、及び触
媒細孔内に残留する還元剤を迅速に離脱するためにも減
圧乾燥操作が好ましい。Next, the reduced catalyst is 100 to 180 ° C., preferably
Dry under 105-150 ° C atmosphere. The drying under reduced pressure is preferable for accelerating the drying and for quickly removing the reducing agent remaining in the pores of the catalyst.
第２図に、ホルマリン水溶液を還元剤としたときの効
果の一例を示す。触媒は粒状ヤシガラ活性炭を担体と
し、コバルト酸化物を担持したものである。還元剤濃度
の増加に伴いオゾン分解効果（脱臭効果と比例する）が
増大する。FIG. 2 shows an example of the effect when a formalin aqueous solution is used as a reducing agent. The catalyst uses granular coconut shell activated carbon as a carrier and supports cobalt oxide. The ozone decomposition effect (in proportion to the deodorizing effect) increases with an increase in the reducing agent concentration.
ヤシガラ活性炭（４〜6mmφ×４〜10mmH）を担体とし
て、酸化コバルトを4wt％担持した触媒を、2wt％ホルマ
リン水溶液に約２時間浸漬したのち取出して、水切り
し、130℃で水分およびホルマリン臭がなくなるまで減
圧乾燥した。Using coconut shell activated carbon (4-6 mmφ × 4-10 mmH) as a carrier, a catalyst supporting 4 wt% of cobalt oxide is immersed in a 2 wt% aqueous solution of formalin for about 2 hours, taken out, and drained. It dried under reduced pressure until it disappeared.
その後、オゾン濃度10ppmを含む空気を、上記触媒38m
l充てんした反応管に、SV＝10000H-1の条件下で通して
出口オゾン濃度を測定し、オゾン分解率を求めた。Then, air containing an ozone concentration of 10 ppm, the catalyst 38m
The mixture was passed through a filled reaction tube under the condition of SV = 10000 H-1 and the outlet ozone concentration was measured to determine the ozone decomposition rate.
その結果、オゾン分解率は99.95％であつた。これに
対し、還元処理をしない触媒のオゾン分解率は99.85％
であり、両者に差が認められた。As a result, the ozone decomposition rate was 99.95%. On the other hand, the ozone decomposition rate of the catalyst without reduction treatment is 99.85%
And a difference was observed between the two.
上記実施例は活性成分として酸化コバルトを使用した
ものであるが、その他前記活性触媒成分としてあげた金
属酸化物も該実施例とほゞ同様な結果が得られた。In the above example, cobalt oxide was used as an active component. However, other metal oxides listed as the above active catalyst component also obtained almost the same results as in this example.
炭素質材料触媒担体に金属酸化物を担持した触媒を、
還元溶液にて処理することによつて、触媒の高活性化を
図ることができ、悪臭成分を酸化分解するオゾン脱臭法
における有効な触媒とすることができた。A catalyst in which a metal oxide is supported on a carbonaceous material catalyst carrier,
By treating with a reducing solution, the activation of the catalyst could be enhanced, and the catalyst could be effectively used in the ozone deodorization method for oxidatively decomposing malodorous components.
第１図は本発明の製造方法による活性化オゾン脱臭触媒
の製造例の工程図、第２図は本発明の製造方法によって
得られた触媒の還元溶液処理の効果を示す図表である。FIG. 1 is a process diagram of a production example of an activated ozone deodorizing catalyst according to the production method of the present invention, and FIG. 2 is a table showing the effect of a reduction solution treatment of the catalyst obtained by the production method of the present invention.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ０１Ｊ 23/22 Ｂ０１Ｊ 23/50 Ａ 23/26 23/70 Ａ 23/32 Ｂ０１Ｄ 53/34 １１６Ｆ 23/50 53/36 Ｈ 23/70 ──────────────────────────────────────────────────続 き Continuation of the front page (51) Int.Cl. 6 Identification number Agency reference number FI Technical display location B01J 23/22 B01J 23/50 A 23/26 23/70 A 23/32 B01D 53/34 116F 23 / 50 53/36 H 23/70
Claims (1)
ルト、ニッケル、銅、銀及び亜鉛からなる群から選ばれ
る１種以上の金属の酸化物を炭素質材料に担持してなる
オゾン脱臭触媒を、還元溶液で処理したのち乾燥するこ
とを特徴とする活性化オゾン脱臭触媒の製造方法。An ozone deodorizing catalyst comprising an oxide of one or more metals selected from the group consisting of vanadium, chromium, manganese, iron, cobalt, nickel, copper, silver and zinc supported on a carbonaceous material. A method for producing an activated ozone deodorizing catalyst, comprising treating with a reducing solution and then drying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1105774A JP2615196B2 (en) | 1989-04-27 | 1989-04-27 | Method for producing activated ozone deodorizing catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1105774A JP2615196B2 (en) | 1989-04-27 | 1989-04-27 | Method for producing activated ozone deodorizing catalyst |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02284648A JPH02284648A (en) | 1990-11-22 |
| JP2615196B2 true JP2615196B2 (en) | 1997-05-28 |
Family
ID=14416508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1105774A Expired - Lifetime JP2615196B2 (en) | 1989-04-27 | 1989-04-27 | Method for producing activated ozone deodorizing catalyst |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2615196B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69412398T2 (en) * | 1993-09-14 | 1999-04-15 | Kuraray Chemical Kk | Deodorant containing metal oxide and containing activated carbon |
| CN111617767B (en) * | 2020-06-03 | 2023-08-29 | 南京神克隆科技有限公司 | Ozone oxidation catalyst for wastewater treatment and preparation method thereof |
| CN112264010A (en) * | 2020-10-26 | 2021-01-26 | 珠海格力电器股份有限公司 | Catalyst for normal-temperature decomposition of formaldehyde and preparation method thereof |
| CN116371419A (en) * | 2023-04-21 | 2023-07-04 | 中南大学 | Microbial carbon-supported manganese-cobalt catalyst and preparation method and application thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5216875A (en) * | 1975-07-30 | 1977-02-08 | Hitachi Ltd | Splash prevnter for rotational dryer |
-
1989
- 1989-04-27 JP JP1105774A patent/JP2615196B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02284648A (en) | 1990-11-22 |
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