CN113198309A - Peculiar smell scavenger and preparation method and application thereof - Google Patents
Peculiar smell scavenger and preparation method and application thereof Download PDFInfo
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- CN113198309A CN113198309A CN202110486150.8A CN202110486150A CN113198309A CN 113198309 A CN113198309 A CN 113198309A CN 202110486150 A CN202110486150 A CN 202110486150A CN 113198309 A CN113198309 A CN 113198309A
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- Prior art keywords
- acrylic acid
- itaconic acid
- odor
- initiator
- odor scavenger
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- 239000002516 radical scavenger Substances 0.000 title claims abstract description 44
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 claims abstract description 77
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 claims abstract description 76
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims abstract description 71
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 71
- 239000003999 initiator Substances 0.000 claims abstract description 40
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000000126 substance Substances 0.000 claims abstract description 16
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 12
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910000037 hydrogen sulfide Inorganic materials 0.000 claims abstract description 12
- 239000000243 solution Substances 0.000 claims description 46
- 238000000034 method Methods 0.000 claims description 25
- 238000010438 heat treatment Methods 0.000 claims description 20
- 238000006386 neutralization reaction Methods 0.000 claims description 20
- 238000003756 stirring Methods 0.000 claims description 20
- 238000006116 polymerization reaction Methods 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 11
- 239000007864 aqueous solution Substances 0.000 claims description 10
- 238000004321 preservation Methods 0.000 claims description 10
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 8
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 5
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 claims description 5
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 4
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims 2
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 abstract description 18
- 230000002000 scavenging effect Effects 0.000 abstract description 10
- 239000002994 raw material Substances 0.000 abstract description 6
- 230000001976 improved effect Effects 0.000 abstract description 4
- 229920001577 copolymer Polymers 0.000 abstract description 3
- UGZADUVQMDAIAO-UHFFFAOYSA-L zinc hydroxide Chemical compound [OH-].[OH-].[Zn+2] UGZADUVQMDAIAO-UHFFFAOYSA-L 0.000 description 20
- 229940007718 zinc hydroxide Drugs 0.000 description 20
- 229910021511 zinc hydroxide Inorganic materials 0.000 description 20
- 239000000843 powder Substances 0.000 description 8
- GAWWVVGZMLGEIW-GNNYBVKZSA-L zinc ricinoleate Chemical compound [Zn+2].CCCCCC[C@@H](O)C\C=C/CCCCCCCC([O-])=O.CCCCCC[C@@H](O)C\C=C/CCCCCCCC([O-])=O GAWWVVGZMLGEIW-GNNYBVKZSA-L 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 229940100530 zinc ricinoleate Drugs 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 4
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000003472 neutralizing effect Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 241001465318 Aspergillus terreus Species 0.000 description 1
- 241000219495 Betulaceae Species 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000002781 deodorant agent Substances 0.000 description 1
- 210000002249 digestive system Anatomy 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 210000000750 endocrine system Anatomy 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- MGJURKDLIJVDEO-UHFFFAOYSA-N formaldehyde;hydrate Chemical compound O.O=C MGJURKDLIJVDEO-UHFFFAOYSA-N 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- KAEAMHPPLLJBKF-UHFFFAOYSA-N iron(3+) sulfide Chemical compound [S-2].[S-2].[S-2].[Fe+3].[Fe+3] KAEAMHPPLLJBKF-UHFFFAOYSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000000653 nervous system Anatomy 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 125000005489 p-toluenesulfonic acid group Chemical group 0.000 description 1
- 239000011941 photocatalyst Substances 0.000 description 1
- 230000037048 polymerization activity Effects 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/52—Hydrogen sulfide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/58—Ammonia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/04—Acids; Metal salts or ammonium salts thereof
- C08F220/06—Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F222/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical and containing at least one other carboxyl radical in the molecule; Salts, anhydrides, esters, amides, imides, or nitriles thereof
- C08F222/02—Acids; Metal salts or ammonium salts thereof, e.g. maleic acid or itaconic acid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/304—Hydrogen sulfide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
- B01D2257/406—Ammonia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Biomedical Technology (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
Abstract
The invention is applicable to the technical field of odor removal, and provides an odor remover and a preparation method and application thereof. The odor scavenger comprises acrylic acid, itaconic acid, an initiator and an alkaline substance containing zinc ions. The invention takes acrylic acid, itaconic acid and alkaline matter containing zinc ion as raw materials, the copolymer of acrylic acid and itaconic acid has many contact sites with zinc ion, so that the concentration of activated zinc ion is greatly improved, and the peculiar smell scavenger of the invention can realize the effective concentration of zinc ion to be more than 90%; the odor scavenger provided by the invention has a remarkably improved effect of scavenging odor molecules, and has the formaldehyde scavenging efficiency of 80%, the hydrogen sulfide scavenging efficiency of 73% and the ammonia gas scavenging efficiency of 90% within 45 min.
Description
Technical Field
The invention belongs to the technical field of odor removal, and particularly relates to an odor remover and a preparation method and application thereof.
Background
With the rapid development of domestic industry, the opportunity for people to contact harmful odorous substances (such as formaldehyde, hydrogen sulfide, ammonia gas and the like) is greatly increased, and the long-term contact of the odorous substances can cause great harm to the nervous system, the respiratory system, the endocrine system, the digestive system and the like of people, thereby causing great influence on health. How to efficiently remove harmful gases frequently encountered in life and improve the living environment is a problem of wide attention of people.
The common methods for removing the odor substances at present comprise a chemical method for removing the odor, a photocatalyst for removing the odor, a porous substance adsorption method and the like. Among them, the chemical method has the advantages of quick effect, good removing effect, low cost and the like, and is widely applied.
Among the numerous odor-removing chemical agents, the zinc ion-based odor-removing compound is the most important one. The most commonly used zinc ion odor removing compound is zinc ricinoleate, and the mechanism is that zinc ricinoleate which is insoluble in water is dissolved in water through an activating agent, so that odor molecules can be fully contacted with zinc ion active sites and further catalytically decomposed by zinc ions, and the effect of removing odor is achieved. However, the effective concentration of the activated zinc ricinoleate is low, only about 30-50%, and the removal efficiency of formaldehyde, hydrogen sulfide and ammonia gas is low.
Disclosure of Invention
The embodiment of the invention aims to provide an odor scavenger and a preparation method and application thereof, aiming at solving the problems in the prior art pointed out in the background art.
The embodiment of the invention is realized by that the odor scavenger comprises acrylic acid, itaconic acid, an initiator and an alkaline substance containing zinc ions.
As another preferable scheme of the embodiment of the invention, the molar ratio of the acrylic acid to the itaconic acid is 1-3: 1.
According to another preferable scheme of the embodiment of the invention, the initiator is one or two of p-toluenesulfonic acid, ammonium persulfate and potassium persulfate, and the addition amount of the initiator accounts for 3-8% of the total mass of the odor scavenger.
Another object of an embodiment of the present invention is to provide a method for preparing the odor scavenger, comprising the following steps:
respectively adopting alkaline substances containing zinc ions to neutralize acrylic acid and itaconic acid;
mixing the treated acrylic acid solution, itaconic acid solution and initiator to carry out polymerization reaction;
cooling, and discharging to obtain the activated zinc ion-containing odor scavenger, wherein the effective concentration of zinc ions can reach more than 90%.
As another preferable scheme of the embodiment of the present invention, the neutralizing treatment of acrylic acid and itaconic acid with an alkaline substance containing zinc ions respectively specifically includes the following steps:
respectively dissolving acrylic acid and itaconic acid into 25-35% aqueous solution, adding a certain amount of alkaline substance containing zinc ions, stirring and heating to 40-60 ℃, and preserving heat for 20-40 min.
As another preferable scheme of the embodiment of the present invention, the mixing the treated acrylic acid solution, itaconic acid solution and initiator to perform a polymerization reaction specifically includes the following steps:
adding the treated itaconic acid solution into a bottle, stirring, heating to 70-90 ℃, dropwise adding the treated acrylic acid solution and an initiator for 1-3 h, and continuing to perform heat preservation reaction for 2-4 h.
As another preferable scheme of the embodiment of the invention, the neutralization ratio of the acrylic acid is 50-100%; the neutralization ratio of the itaconic acid is 50-100%.
Another object of the embodiments of the present invention is to provide an application of the odor scavenger in preparation of an odor scavenger.
As another preferable scheme of the embodiment of the invention, the odor substance is one or more of formaldehyde, hydrogen sulfide and ammonia gas.
The invention takes acrylic acid, itaconic acid and alkaline matter containing zinc ion as raw materials, the copolymer of acrylic acid and itaconic acid has more contact sites with zinc ion, the concentration of activated zinc ion is greatly improved,
the formula of the zinc ricinoleate deodorant comprises: 30 parts of zinc ricinoleate, 70 parts of surfactant and water, wherein the effective active ingredients are about 30%; the peculiar smell scavenger does not need to add a surfactant additionally, and can realize that the effective concentration of zinc ions reaches more than 90 percent and is far higher than that of zinc ricinoleate;
experiments prove that the peculiar smell removing agent provided by the invention has a remarkably improved peculiar smell molecule removing effect, the formaldehyde removing efficiency is 80% in 45min, the hydrogen sulfide removing efficiency is 73%, and the ammonia gas removing efficiency is 90%;
in addition, compared with common maleic anhydride, itaconic acid in the raw materials of the invention has higher polymerization activity and can provide higher carboxyl content, and the higher the carboxyl content is, the higher the charge density is, the more dense the sites for activating zinc ions are; meanwhile, the itaconic acid polymer can be biodegraded, has rich sources and is beneficial to environmental protection.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Specific implementations of the present invention are described in detail below with reference to specific embodiments.
Example 1
The embodiment provides an odor scavenger, and a preparation method of the odor scavenger comprises the following steps:
(1) weighing the following raw materials: acrylic acid, itaconic acid, an initiator, and a zinc ion-containing basic material, which may be, but is not limited to, zinc hydroxide; the molar ratio of the acrylic acid to the itaconic acid is 1: 1; the initiator is ammonium persulfate, and the addition amount of the initiator accounts for 3% of the total mass of the odor scavenger;
(2) respectively adopting zinc hydroxide to neutralize acrylic acid and itaconic acid; the method specifically comprises the following steps: respectively dissolving acrylic acid and itaconic acid into 25% aqueous solution, adding a certain amount of zinc hydroxide powder, stirring and heating to 40 ℃, and keeping the temperature for 40 min; the neutralization ratio of the acrylic acid is 50 percent (namely the molar ratio of the zinc hydroxide to the acrylic acid is 1: 2); the neutralization ratio of the itaconic acid is 100 percent;
(3) mixing the treated acrylic acid solution, itaconic acid solution and initiator to carry out polymerization reaction; the method specifically comprises the following steps: adding the treated itaconic acid solution into a bottle, stirring, heating to 70 ℃, dropwise adding the treated acrylic acid solution and the initiator by using a constant-pressure dropping funnel for 3 hours, and continuing to perform heat preservation reaction for 2 hours;
(4) cooling to room temperature, and discharging to obtain the activated zinc ion-containing odor scavenger with effective zinc ion concentration over 90%.
Itaconic acid is a non-toxic biological product that can be derived from renewable resources. Itaconic acid may be obtained by distillation of citric acid or by fermentation of a carbohydrate such as glucose using aspergillus terreus. The itaconic acid molecule not only contains carbon-carbon double bond functional group, but also is respectively connected with a carboxyl on two sides of the double bond, and the latter endows the itaconic acid copolymer with excellent negative electricity dispersion performance, so the itaconic acid polymer with low molecular weight has strong dispersion stability for a negative electricity colloid dispersion system.
Example 2
The embodiment provides an odor scavenger, and a preparation method of the odor scavenger comprises the following steps:
(1) weighing the following raw materials: acrylic acid, itaconic acid, an initiator, and zinc hydroxide; the molar ratio of the acrylic acid to the itaconic acid is 3: 1; the initiator is potassium persulfate, and the addition amount of the initiator accounts for 8% of the total mass of the odor scavenger;
(2) respectively adopting zinc hydroxide to neutralize acrylic acid and itaconic acid; the method specifically comprises the following steps: respectively dissolving acrylic acid and itaconic acid into 35% aqueous solution, adding a certain amount of zinc hydroxide powder, stirring and heating to 60 ℃, and keeping the temperature for 20 min; the neutralization ratio of the acrylic acid is 100 percent; the neutralization ratio of the itaconic acid is 50%;
(3) mixing the treated acrylic acid solution, itaconic acid solution and initiator to carry out polymerization reaction; the method specifically comprises the following steps: adding the treated itaconic acid solution into a bottle, stirring, heating to 90 ℃, dropwise adding the treated acrylic acid solution and the initiator by using a constant-pressure dropping funnel for 1h, and continuing the heat preservation reaction for 4 h;
(4) cooling to room temperature, and discharging to obtain the activated zinc ion-containing odor scavenger with effective zinc ion concentration over 90%.
Example 3
The embodiment provides an odor scavenger, and a preparation method of the odor scavenger comprises the following steps:
(1) weighing the following raw materials: acrylic acid, itaconic acid, an initiator, and zinc hydroxide; the molar ratio of the acrylic acid to the itaconic acid is 2: 1; the initiator is p-toluenesulfonic acid, and the addition amount of the initiator accounts for 6% of the total mass of the odor scavenger;
(2) respectively adopting zinc hydroxide to neutralize acrylic acid and itaconic acid; the method specifically comprises the following steps: respectively dissolving acrylic acid and itaconic acid into 30% aqueous solution, adding a certain amount of zinc hydroxide powder, stirring and heating to 50 ℃, and keeping the temperature for 30 min; the neutralization ratio of the acrylic acid is 100 percent; the neutralization ratio of the itaconic acid is 50%;
(3) mixing the treated acrylic acid solution, itaconic acid solution and initiator to carry out polymerization reaction; the method specifically comprises the following steps: adding the treated itaconic acid solution into a bottle, stirring, heating to 80 ℃, dropwise adding the treated acrylic acid solution and the initiator by using a constant-pressure dropping funnel for 2 hours, and continuing to perform heat preservation reaction for 3 hours;
(4) cooling to room temperature, and discharging to obtain the activated zinc ion-containing odor scavenger with effective zinc ion concentration over 90%.
Example 4
Different from the embodiment 1, the initiator in the embodiment is ammonium persulfate and potassium persulfate, and the addition amount of the initiator accounts for 4% of the total mass of the odor scavenger.
Example 5
Unlike embodiment 1, in this embodiment:
step (2) respectively adopting zinc hydroxide to neutralize acrylic acid and itaconic acid; the method specifically comprises the following steps: respectively dissolving acrylic acid and itaconic acid into 22% aqueous solution, adding a certain amount of zinc hydroxide powder, stirring and heating to 56 ℃, and keeping the temperature for 36 min; the neutralization ratio of the acrylic acid is 60 percent; the neutralization ratio of the itaconic acid is 60 percent;
mixing the treated acrylic acid solution, itaconic acid solution and initiator for polymerization reaction; the method specifically comprises the following steps: adding the treated itaconic acid solution into a bottle, stirring, heating to 78 ℃, dropwise adding the treated acrylic acid solution and the initiator by using a constant-pressure dropping funnel for 2.3 hours, and continuing to perform heat preservation reaction for 2.4 hours.
Example 6
Unlike embodiment 1, in this embodiment:
step (2) respectively adopting zinc hydroxide to neutralize acrylic acid and itaconic acid; the method specifically comprises the following steps: respectively dissolving acrylic acid and itaconic acid into 24% aqueous solution, adding a certain amount of zinc hydroxide powder, stirring and heating to 52 ℃, and keeping the temperature for 25 min; the neutralization ratio of the acrylic acid is 70 percent; the neutralization ratio of the itaconic acid is 65%;
mixing the treated acrylic acid solution, itaconic acid solution and initiator for polymerization reaction; the method specifically comprises the following steps: adding the treated itaconic acid solution into a bottle, stirring, heating to 76 ℃, dropwise adding the treated acrylic acid solution and the initiator by using a constant-pressure dropping funnel for 2.1h, and continuing to perform heat preservation reaction for 3.4 h.
Example 7
Unlike embodiment 1, in this embodiment:
step (2) respectively adopting zinc hydroxide to neutralize acrylic acid and itaconic acid; the method specifically comprises the following steps: respectively dissolving acrylic acid and itaconic acid into 26% aqueous solution, adding a certain amount of zinc hydroxide powder, stirring and heating to 51 ℃, and keeping the temperature for 33 min; the neutralization ratio of the acrylic acid is 80 percent; the neutralization ratio of the itaconic acid is 55 percent;
mixing the treated acrylic acid solution, itaconic acid solution and initiator for polymerization reaction; the method specifically comprises the following steps: adding the treated itaconic acid solution into a bottle, stirring, heating to 74 ℃, dropwise adding the treated acrylic acid solution and the initiator by using a constant-pressure dropping funnel for 1.3h, and continuing to perform heat preservation reaction for 2.8 h.
Example 8
Unlike embodiment 1, in this embodiment:
step (2) respectively adopting zinc hydroxide to neutralize acrylic acid and itaconic acid; the method specifically comprises the following steps: respectively dissolving acrylic acid and itaconic acid into 28% aqueous solution, adding a certain amount of zinc hydroxide powder, stirring and heating to 44 ℃, and keeping the temperature for 28 min; the neutralization ratio of the acrylic acid is 90 percent; the neutralization ratio of the itaconic acid is 75%;
mixing the treated acrylic acid solution, itaconic acid solution and initiator for polymerization reaction; the method specifically comprises the following steps: adding the treated itaconic acid solution into a bottle, stirring, heating to 72 ℃, dropwise adding the treated acrylic acid solution and the initiator by using a constant-pressure dropping funnel for 1.8 hours, and continuing to perform heat preservation reaction for 3.2 hours.
Example 9
Unlike embodiment 1, in this embodiment:
step (2) respectively adopting zinc hydroxide to neutralize acrylic acid and itaconic acid; the method specifically comprises the following steps: respectively dissolving acrylic acid and itaconic acid into 29% aqueous solution, adding a certain amount of zinc hydroxide powder, stirring and heating to 42 ℃, and keeping the temperature for 22 min; the neutralization ratio of the acrylic acid is 65 percent; the neutralization ratio of the itaconic acid is 85%;
mixing the treated acrylic acid solution, itaconic acid solution and initiator for polymerization reaction; the method specifically comprises the following steps: adding the treated itaconic acid solution into a bottle, stirring, heating to 83 ℃, dropwise adding the treated acrylic acid solution and the initiator by using a constant-pressure dropping funnel for 1.6h, and continuing to perform heat preservation reaction for 3.8 h.
Example 10
Unlike embodiment 1, in this embodiment:
and (2) respectively neutralizing acrylic acid and itaconic acid by adopting zinc oxide.
Examples of the experiments
The peculiar smell removing experimental method comprises the following steps: the detection equipment of hydrogen sulfide and ammonia gas is a French Alder gas detector MX2100, and the formaldehyde detection equipment is a deep Bory PPM-400ST formaldehyde detector. When the experiment is started, a detecting instrument is placed in a sealable glass container with a cover, a certain amount of molecular sources of peculiar smell such as hydrogen sulfide (generated by the reaction of hydrochloric acid and ferric sulfide), a formaldehyde water solution, ammonia water and the like are placed in the container and are allowed to freely diffuse, the detecting instrument starts counting, the initial concentration is recorded, and the initial concentration is unified to be about 500 ppm. After stabilization, a certain volume of odor scavenger is sprayed into the container, and after waiting for 45min, the reading of the instrument is recorded. Repeat 5 times and average the clearance.
The odor scavenger prepared in example 1 was used to remove odor, and formaldehyde, hydrogen sulfide and ammonia gas were separately tested for removal using an equivalent amount of commercially available odor scavenger Evonik TEGO a30 as a control group, and after 45min removal, the effects are shown in the following table:
TABLE 1 Formaldehyde, hydrogen sulfide, ammonia gas scavenging effect
| Item | The removal efficiency of formaldehyde% | The scavenging efficiency of hydrogen sulfide% | The removal efficiency of ammonia gas% |
| Example 1 | 80 | 73 | 90 |
| Control group | 70 | 70 | 75 |
As can be seen from the above table, compared with the odor scavenger of Evonik TEGO a30 sold in the market, the odor scavenger prepared in the embodiment 1 of the present invention has an excellent odor scavenging effect, wherein the formaldehyde scavenging efficiency is 80%, the hydrogen sulfide scavenging efficiency is 73%, and the ammonia scavenging efficiency is 90% within 45 min.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. The odor scavenger is characterized by comprising acrylic acid, itaconic acid, an initiator and an alkaline substance containing zinc ions.
2. An odor scavenger according to claim 1, wherein the molar ratio of acrylic acid to itaconic acid is 1-3: 1.
3. An odor scavenger according to claim 1, wherein the initiator is one or two of p-toluenesulfonic acid, ammonium persulfate and potassium persulfate, and the addition amount of the initiator accounts for 3-8% of the total mass of the odor scavenger.
4. A method of preparing an odor scavenger according to any one of claims 1 to 3, comprising the steps of:
respectively adopting alkaline substances containing zinc ions to neutralize acrylic acid and itaconic acid;
mixing the treated acrylic acid solution, itaconic acid solution and initiator to carry out polymerization reaction;
cooling, and discharging to obtain the activated zinc ion-containing odor scavenger with zinc ion effective concentration of more than 90%.
5. The preparation method of the odor scavenger according to claim 3, wherein the acrylic acid and the itaconic acid are neutralized by alkaline substances containing zinc ions respectively, and the method specifically comprises the following steps:
respectively dissolving acrylic acid and itaconic acid into 25-35% aqueous solution, adding a certain amount of alkaline substance containing zinc ions, stirring and heating to 40-60 ℃, and preserving heat for 20-40 min.
6. The method for preparing an odor scavenger according to claim 3, wherein the acrylic acid solution after treatment, the itaconic acid solution and the initiator are mixed to perform a polymerization reaction, and the method specifically comprises the following steps:
adding the treated itaconic acid solution into a bottle, stirring, heating to 70-90 ℃, dropwise adding the treated acrylic acid solution and an initiator for 1-3 h, and continuing to perform heat preservation reaction for 2-4 h.
7. The preparation method of the odor scavenger according to claim 6, wherein the neutralization ratio of the acrylic acid is 50-100%; the neutralization ratio of the itaconic acid is 50-100%.
8. Use of an odor scavenger according to any one of claims 1 to 3 in the manufacture of an odor scavenger.
9. Use of an odor scavenger in the manufacture of an odor scavenger according to claim 8 wherein the odor is one or more of formaldehyde, hydrogen sulfide, ammonia gas.
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