WO2017010472A1 - Agent réduisant les odeurs - Google Patents

Agent réduisant les odeurs Download PDF

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Publication number
WO2017010472A1
WO2017010472A1 PCT/JP2016/070511 JP2016070511W WO2017010472A1 WO 2017010472 A1 WO2017010472 A1 WO 2017010472A1 JP 2016070511 W JP2016070511 W JP 2016070511W WO 2017010472 A1 WO2017010472 A1 WO 2017010472A1
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Prior art keywords
platinum
porous silica
freshness
agent
decomposing
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Ceased
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PCT/JP2016/070511
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English (en)
Japanese (ja)
Inventor
南部　宏暢
勇輝 笠間
亘 藤井
福岡　淳
清隆 中島
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Hokkaido University NUC
Taiyo Kagaku Co Ltd
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Hokkaido University NUC
Taiyo Kagaku Co Ltd
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Priority to JP2017528683A priority Critical patent/JP7018625B2/ja
Publication of WO2017010472A1 publication Critical patent/WO2017010472A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVATION OF FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES; CHEMICAL RIPENING OF FRUIT OR VEGETABLES
    • A23B2/00—Preservation of foods or foodstuffs, in general
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/01—Deodorant compositions
    • 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
    • B01D53/86—Catalytic processes
    • 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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/03—Catalysts comprising molecular sieves not having base-exchange properties
    • B01J29/035—Microporous crystalline materials not having base exchange properties, such as silica polymorphs, e.g. silicalites
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H3/00—Other air-treating devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/24—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/24—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants
    • B65D81/28—Applications of food preservatives, fungicides, pesticides or animal repellants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/50—Containers, packaging elements or packages, specially adapted for particular articles or materials for living organisms, articles or materials sensitive to changes of environment or atmospheric conditions, e.g. land animals, birds, fish, water plants, non-aquatic plants, flower bulbs, cut flowers or foliage
    • 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
    • B01J2235/00—Indexing scheme associated with group B01J35/00, related to the analysis techniques used to determine the catalysts form or properties
    • B01J2235/15—X-ray diffraction
    • 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
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H3/00—Other air-treating devices
    • B60H3/06—Filtering
    • B60H2003/0675—Photocatalytic filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H3/00—Other air-treating devices
    • B60H3/06—Filtering
    • B60H2003/0691—Adsorption filters, e.g. activated carbon

Definitions

  • the present invention relates to an odor substance decomposing agent, a deodorizing agent, a freshness maintaining agent, and an article provided with these.
  • odorous substances such as sulfur compounds, nitrogen compounds, aldehydes, hydrocarbons, and lower fatty acids
  • odorous substances such as sulfur compounds, nitrogen compounds, aldehydes, hydrocarbons, and lower fatty acids
  • odorous substances such as acetaldehyde, methyl mercaptan, and trimethylamine may be generated as the freshness of fish and meat decreases.
  • adsorption by activated carbon or oxidative decomposition using a photocatalyst is performed.
  • Patent Document 1 discloses a deodorizing adsorbent for a sewage treatment plant in which bromine, sulfuric acid, and alkali metal halide are uniformly supported on activated carbon.
  • Patent Document 2 a layer containing at least two kinds of photocatalyst particles of titanium oxide and zinc oxide is formed on a base material, and the 50% particle diameter of zinc oxide is larger than the 50% particle diameter of the titanium oxide.
  • An indoor space deodorizing material characterized in that is larger is disclosed.
  • Patent Document 1 the adsorptive capacity decreases with time, and it is difficult to use for a long time.
  • the invention described in Patent Document 2 requires a device for irradiating light, and therefore cannot be easily implemented, and the resolution of odorous substances is not sufficient.
  • the subject of the present invention is an odor substance decomposing agent, a decomposing method using the decomposing agent, a deodorizing agent and a deodorizing method using the deodorizing agent, which can be used easily and has an excellent resolution. It is providing the freshness preservation agent of food-drinks, the freshness-keeping method of food-drinks using this freshness-keeping agent, and articles
  • the present invention [1] An odor substance decomposing agent comprising platinum or a platinum-containing compound supported on porous silica, wherein the odor substance is selected from aldehydes, fatty acids, sulfur compounds, and nitrogen compounds.
  • a deodorant used in an atmosphere of 80 to -40 ° C in the presence of oxygen comprising at least one volatile compound [4]
  • a method for deodorizing by decomposing the odorous substance by contacting the odorous substance with the deodorant described in [3] in the presence of oxygen at 80 to ⁇ 40 ° C.
  • the deodorizing method wherein the odor substance contains at least one volatile compound selected from aldehydes, fatty acids, sulfur compounds, and nitrogen compounds
  • a freshness-preserving agent for foods and beverages or flower buds that decomposes odorous substances by supporting platinum or a platinum-containing compound on porous silica, wherein the odorous substances are aldehydes, fatty acids, sulfur compounds, and A freshness-keeping agent comprising at least one volatile compound selected from nitrogen compounds and used in the presence of oxygen in an atmosphere of 80 to ⁇ 40 ° C.
  • the odorous substance and the freshness-preserving agent described in [5] are contacted in the presence of oxygen in an atmosphere of 80 to -40 ° C.
  • An article comprising the decomposing agent according to [1], the deodorizing agent according to [3], or the freshness maintaining agent according to [5].
  • an odorous substance decomposing agent that can be used easily and has an excellent resolution, a decomposing method using the decomposing agent, a deodorizing agent, and a deodorizing method using the deodorizing agent, A freshness-preserving agent for foods and beverages, a method for keeping freshness of foods and beverages using the freshness-keeping agent, and articles equipped with these can be provided.
  • Examples of deodorizing methods other than adsorption by activated carbon and oxidative decomposition using a photocatalyst include catalytic combustion using a platinum catalyst. It is known that specific odorous substances (for example, volatile organic compounds such as acetaldehyde, methyl mercaptan, trimethylamine) can be oxidatively decomposed at a high temperature of 150 to 350 ° C. by this method. However, a technique for decomposing these at a low temperature using a platinum catalyst or the like is not known.
  • this decomposing agent is formed by supporting platinum or a platinum-containing compound on porous silica.
  • An embodiment of the present invention includes a method of decomposing an odorous substance by bringing the odorous substance into contact with a decomposing agent obtained by supporting platinum or a platinum-containing compound on porous silica. Thereby, an odor substance can be removed.
  • This decomposing agent and decomposing method can be used for various applications that are beneficial when decomposing odorous substances.
  • An embodiment of the present invention includes a deodorant that decomposes odorous substances. This deodorant is obtained by supporting platinum or a platinum-containing compound on porous silica.
  • an odor substance is brought into contact with a deodorant obtained by supporting platinum or a platinum-containing compound on porous silica to decompose and deodorize the odor substance. Thereby, an odor substance can be removed.
  • the deodorant and the deodorizing method are not particularly limited.
  • odorous substances generated during transportation and storage of food and drink odorous substances generated from garbage, odorous substances generated from factories, animal remains Deodorize by decomposing odorous substances generated from
  • a freshness-preserving agent such as food or drink that decomposes odorous substances can be mentioned.
  • This freshness-keeping agent is obtained by supporting platinum or a platinum-containing compound on porous silica.
  • a method for maintaining the freshness of a food or drink or a flower bud by decomposing the odorous substance by bringing the odorous substance into contact with a freshness-keeping agent formed by supporting platinum or a platinum-containing compound on porous silica Is mentioned. This also removes odorous substances.
  • the freshness-keeping agent and the freshness-keeping method are not particularly limited, and for example, the freshness can be maintained by decomposing odorous substances generated during transportation and storage of food and drink or florets.
  • food / beverage products refer to what contains both a drink and solid food.
  • decomposing agent etc. an article provided with these decomposing agent, deodorant, and freshness-keeping agent (hereinafter also referred to as “decomposing agent etc.”) can be mentioned.
  • This article is not particularly limited, and examples thereof include bags, containers, filters, refrigerators, freezers, containers, air conditioners, vehicles, ships, and aircraft.
  • odorous substances such as methyl mercaptan and trimethylamine are generated from fish and meat (stored objects) stored in the refrigerator, and these cause odor in the refrigerator.
  • the refrigerator and freezer of this aspect are used, the odor substance generated from the material to be stored in the warehouse is decomposed, so that the odor can be reduced.
  • the surface of the object to be preserved is made weakly acidic by, for example, causing carbon dioxide gas generated during the decomposition of odorous substances to the object to be preserved, it can suppress the action of enzymes that degrade proteins and increase the number of bacteria.
  • the freshness can be maintained by suppressing.
  • some odorous substance remains around the object to be preserved, the action of carbon dioxide gas on the object to be preserved is inhibited by the odorous substance, making it difficult to maintain freshness. If the refrigerator or freezer of this aspect is used, since the resolution of the odorous substance is high, there is little inhibition by the odorous substance, and the freshness of the stored object can be suitably maintained.
  • the above embodiments are used in the presence of oxygen in an atmosphere of 80 to -40 ° C.
  • it may be used at 15 to 0 ° C. for a refrigerator and ⁇ 5 to ⁇ 25 ° C. for a freezer.
  • the odor substance contains at least one volatile compound selected from aldehydes, fatty acids, sulfur compounds, and nitrogen compounds.
  • the aldehyde is not particularly limited as long as it is a compound having an aldehyde group, and examples include formaldehyde, acetaldehyde, propionaldehyde, butyraldehyde, crotonaldehyde, hexanal, nonenal and the like.
  • Fatty acids are not particularly limited as long as they are chain organic acids having a carboxy group, but include formic acid, acetic acid, propionic acid, butyric acid, valeric acid, caproic acid and the like.
  • sulfur compounds examples include methyl mercaptan and mercaptoethanol.
  • nitrogen compounds examples include trimethylamine, triethylamine, ethylamine, ethylenediamine, and ammonia.
  • porous silica means a substance mainly composed of silicon oxide having a porous structure.
  • the average pore diameter of the porous silica is preferably 0.5 nm or more from the viewpoint of promoting the progress of the decomposition reaction, and preferably 15 nm or less from the viewpoint of supporting platinum in the form of particles. From these viewpoints, the average pore diameter of the porous silica is preferably 0.5 to 15 nm, more preferably 0.5 to 10 nm, still more preferably 0.5 to 7 nm, still more preferably 0.5 to 5 nm. is there. In this specification, the average pore diameter of the porous silica can be calculated by the NL-DFT method by nitrogen adsorption / desorption.
  • the specific surface area of the porous silica is preferably 300 m 2 / g or more from the viewpoint of increasing the supported amount of platinum, and preferably 2000 m 2 / g or less from the viewpoint of realizing the production. From these viewpoints, the specific surface area of the porous silica is preferably 300 to 2000 m 2 / g, more preferably 600 to 1500 m 2 / g.
  • the specific surface area of the porous silica in this specification can be calculated by the BET method based on nitrogen adsorption / desorption.
  • the porous silica preferably has at least one peak at a position where the d-spacing of X-ray diffraction is larger than 2.0 nm.
  • the X-ray diffraction peak means that there is a periodic structure having a d value corresponding to the peak angle in the sample. Therefore, the presence of one or more peaks at the diffraction angle corresponding to a d value of 2.0 nm or more means that the pores are regularly arranged at intervals of 2.0 nm or more.
  • Such porous silica having regularly arranged pores is also referred to as mesoporous silica in the present specification.
  • the d interval is preferably 2.0 to 25 nm, more preferably 3.0 to 20 nm.
  • the X-ray diffraction pattern of porous silica can be measured by a powder X-ray diffractometer.
  • the method for producing porous silica is not particularly limited, but can be produced, for example, as follows. First, an inorganic raw material and an organic raw material are mixed and reacted to form an organic matter-inorganic matter composite in which an inorganic matter skeleton is formed around the organic matter as a template. Subsequently, porous silica is obtained by removing organic substances from the obtained composite.
  • the inorganic raw material examples include alkoxysilanes such as tetramethoxysilane, tetraethoxysilane, and tetrapropoxysilane, sodium silicate, kanemite (Kanemite, NaHSi 2 O 5 ⁇ 3H 2 O), silica, and silica-metal composite oxide. It is done. These inorganic raw materials form a silicate skeleton. These can be used alone or in admixture of two or more.
  • the organic raw material used as the template is not particularly limited, and examples thereof include a surfactant.
  • the surfactant may be any of cationic, anionic, and nonionic, specifically, alkyltrimethylammonium (preferably alkyltrimethylammonium having an alkyl group having 8 to 18 carbon atoms).
  • an appropriate solvent can be used.
  • a solvent For example, water, an organic solvent, the mixture of water and an organic solvent, etc. are mentioned.
  • the formation method of the complex of the inorganic substance and the organic substance is not particularly limited. For example, after dissolving the organic raw material in a solvent, adding the inorganic raw material and adjusting to a predetermined pH, the reaction mixture is then heated to a predetermined temperature. And a method in which the condensation polymerization reaction is carried out.
  • the reaction temperature of the polycondensation reaction varies depending on the type and concentration of the organic raw material and inorganic raw material to be used, but is preferably about 0 to 100 ° C., more preferably 35 to 80 ° C.
  • the reaction time of the condensation polymerization reaction is not particularly limited, but is preferably 1 to 24 hours.
  • the above condensation polymerization reaction may be performed either in a stationary state or in a stirring state, or may be performed in combination.
  • Porous silica is obtained by removing the organic raw material from the composite obtained after the condensation polymerization reaction.
  • the removal of the organic substance from the complex of the organic substance and the inorganic substance can be performed by a method such as a method of baking at 400 to 800 ° C. or a method of treating with a solvent such as water or alcohol.
  • the porous silica is preferably mesoporous silica in which pores are regularly arranged from the viewpoint of pore volume.
  • mesoporous silica is obtained by dispersing sodium silicate in an aqueous solution containing a surfactant, adding hydrochloric acid while heating and stirring to adjust the pH of the dispersion, and washing and drying the obtained solid product. It is obtained by baking at about 400 to 800 ° C.
  • platinum-containing compound supported on the porous silica examples include platinum chloride, platinum oxide, platinum hydroxide, chloroplatinate, and alloys with other metals.
  • the particles of platinum or platinum-containing compounds supported on porous silica are preferably 0.5 to 7 nm, more preferably 1 to 4 nm, from the viewpoint of catalytic activity.
  • the content of platinum or the platinum-containing compound in the decomposition agent or the like is preferably 0.1% by mass or more from the viewpoint of catalytic activity, and preferably 5% by mass or less from the viewpoint of production cost. From these viewpoints, the content of platinum or the platinum-containing compound is preferably 0.1 to 5% by mass, more preferably 0.1 to 3% by mass, and still more preferably 0.1 to 2% by mass in the decomposing agent. It is.
  • a decomposition agent or the like in which platinum or a platinum-containing compound is supported on porous silica can be obtained, for example, by reducing a mixture of a platinum raw material such as a platinum compound containing a platinum atom or a platinum complex and porous silica. Specifically, for example, an aqueous solution containing a platinum raw material is prepared, impregnated with porous silica, dried, and then reduced to obtain a decomposition agent in which platinum or a platinum-containing compound is supported on porous silica. Can do.
  • platinum raw materials include chloroplatinic acid, dinitrodiammine platinum, and tetraammineplatinum nitrate.
  • the temperature condition for drying the porous silica impregnated with the aqueous solution containing the platinum raw material is not particularly limited, but is preferably about 50 to 200 ° C.
  • a method of treating with a reducing agent, heat, light or the like can be used, and conditions for generating platinum particles by decomposition of the platinum raw material are appropriately set. Since excessive treatment may increase the particle diameter due to sintering of the generated platinum particles, it is necessary to set appropriate conditions.
  • chloroplatinic acid when used, it is preferable to use hydrogen as a reducing agent and to treat it at a temperature of 100 to 400 ° C.
  • Platinum or platinum-containing compounds are preferably supported in the pores rather than outside the pores of the porous silica because the catalytic activity decreases when these become coarse particles due to particle growth. Platinum or platinum particles supported (attached) outside the pores can be removed by washing with running water or the like.
  • the decomposition of odorous substances by a conventional metal catalyst is performed at a high temperature of 150 ° C. or higher, whereas the technical common knowledge of those skilled in the art is that the room temperature and freezing point are The odorous substance can be decomposed even in a temperature range below.
  • Examples 1 and 2 1.0 g of the carrier shown in Table 1 was suspended in 50 mL of water, and an aqueous chloroplatinic acid solution [H 2 PtCl 6 aq. The solution was stirred overnight at room temperature. The solvent is distilled off by heating to 50 ° C. using an evaporator, and the obtained powder is vacuum-dried at 60 ° C. for 16 to 18 hours, and hydrogen gas is circulated at 30 mL / min for 2 hours at 150 ° C. By performing the reduction treatment, a decomposition agent having platinum supported on a carrier was obtained.
  • Example 3 1.0 g of the carrier shown in Table 1 is suspended in 50 mL of water, and a dinitrodiammineplatinum nitrate aqueous solution [(NO 2 ) 2 (NH 3 ) 2 Pt ⁇ HNO 3 aq so that the supported amount of Pt is 1.0 mass%. . The solution was stirred overnight at room temperature. The solvent was distilled off by heating to 50 ° C. using an evaporator, and the resulting powder was vacuum-dried at 60 ° C. for 16 to 18 hours, and hydrogen gas was circulated at 30 mL / min for 2 hours at 300 ° C. By performing the reduction treatment, a decomposition agent having platinum supported on a carrier was obtained.
  • the carrier used in Examples 1 and Comparative Example 1 was 9.4 nm, 5.8 nm, and 4.9 nm.
  • the carriers used in Examples 2 and 3 had peaks at 4.9 nm, 2.9 nm, 2.5 nm, and 1.9 nm, respectively.
  • Test Example 1 Aldehyde Decomposition Test The following aldehyde decomposition tests were performed using the decomposing agents obtained in Examples 1 to 3. “Odor bag” (bag capacity: 3 L, containing 2.5 L of reaction gas (acetaldehyde concentration, about 100 ppm; oxygen, 20% by volume; nitrogen, balance: balance gas) containing aldehyde (acetaldehyde) in the amount shown in Table 2 Bag size: 250 ⁇ 250 mm, Material: Polyester film / manufactured by ASONE Co., Ltd.) 500 mg of decomposing agent was introduced and allowed to stand at 4 ° C. for 21 hours. (Measured by Gastec Co., Ltd.). The results are shown in Table 2.
  • Test Example 2 Ammonia decomposition test Using the decomposition agents obtained in Examples 1 to 3, the following ammonia decomposition test was performed. “Smell bag” (bag capacity: 3 L, bag size :) containing 2.5 L of a reaction gas (ammonia concentration, about 65 ppm; oxygen, 20 vol%; nitrogen, balance: balance gas) containing ammonia in the amount shown in Table 2 250 ⁇ 250 mm, material: polyester film / manufactured by ASONE Corporation), 500 mg of decomposing agent is added and left at 4 ° C. for 21 hours. Measured at The results are shown in Table 2.
  • a reaction gas ammonia concentration, about 65 ppm; oxygen, 20 vol%; nitrogen, balance: balance gas
  • Test Example 3 Trimethylamine degradation test The following trimethylamine degradation test was conducted using the degradation agents obtained in Examples 1 to 3. “Smell bag” (bag capacity: 3 L, bag size: 2.5 L) containing 2.5 L of reaction gas (trimethylamine concentration, about 3 ppm; oxygen, 20% by volume; nitrogen, balance: balance gas) containing the amount of trimethylamine described in Table 2 250 ⁇ 250 mm, material: polyester film / manufactured by ASONE Corporation), 500 mg of decomposing agent is added and left at 4 ° C. for 21 hours. Measured at The results are shown in Table 2.
  • Test Example 4 Methyl mercaptan degradation test The following methyl mercaptan degradation test was conducted using the degradation agents obtained in Examples 1 to 3. “Odor bag” (bag capacity: 3 L) containing 2.5 L of reaction gas containing methyl mercaptan in the amount shown in Table 2 (methyl mercaptan concentration, about 1.5 ppm; oxygen, 20 vol%; nitrogen, balance: balance gas) , Bag size: 250 ⁇ 250 mm, material: polyester film / manufactured by ASONE Co., Ltd.), 500 mg of decomposing agent was put in, left to stand at 4 ° C. for 21 hours, and methyl mercaptan concentration in the head space in the odor bag (Measured by Gastech). The results are shown in Table 2.
  • Test Example 5 Ammonia decomposition test (room temperature) The following ammonia decomposition tests were conducted using the decomposition agents obtained in Examples 1 and 2. “Smell bag” (bag capacity: 3 L, bag size: 250 ⁇ ) containing 2 L of reaction gas (ammonia concentration, about 50 ppm; oxygen, 20 vol%; helium, balance: balance gas) containing ammonia in the amount shown in Table 2 250 mm, material: polyester film / manufactured by ASONE Corporation), 500 mg of decomposition agent was added and allowed to stand at 25 ° C. for 21 hours, and then the ammonia concentration in the head space in the odor bag was measured with a gas detector tube (manufactured by Gastec Corporation). It was measured. The results are shown in Table 2.
  • Test Example 6 Methyl mercaptan degradation test (room temperature) Using the decomposition agents obtained in Examples 1 and 2 and Comparative Example 1, the following methyl mercaptan decomposition test was performed. “Smell bag” containing 2 L of a reaction gas (methyl mercaptan concentration, about 15 ppm; oxygen, 20% by volume; helium, balance: balance gas) containing methyl mercaptan in the amount shown in Table 2 (bag capacity: 3 L, bag size: 400 ⁇ 250 mm, material: Polyester film / manufactured by ASONE Corporation), 400 mg of decomposing agent was added and left at 25 ° C. for 21 hours. ). The results are shown in Table 2.
  • Test Example 7 Fatty acid degradation test (room temperature) The following fatty acid decomposition tests were performed using the decomposition agents obtained in Examples 1 to 3. “Odor bag” (bag capacity: 3 L, containing 2.5 L of reaction gas (acetic acid concentration, about 50 ppm; oxygen, 20 vol%; nitrogen, balance: balance gas) containing fatty acid (acetic acid) in the amount shown in Table 2 Bag size: 250 ⁇ 250 mm, Material: Polyester film / manufactured by ASONE Co., Ltd.), 500 mg of decomposition agent was added and left at 25 ° C. for 21 hours. (Measured by Gastec Co., Ltd.). The results are shown in Table 2.
  • “Odor bag” bag capacity: 3 L, containing 2.5 L of reaction gas (acetic acid concentration, about 50 ppm; oxygen, 20 vol%; nitrogen, balance: balance gas) containing fatty acid (acetic acid) in the amount shown in Table 2 Bag size: 250 ⁇ 250 mm, Material: Polyester film / manufactured by ASONE Co., Ltd.
  • Test Example 8 Aldehyde degradation test (room temperature) The following aldehyde decomposition tests were performed using the decomposition agents obtained in Examples 1 to 3 and Comparative Example 1.
  • “Smell bag” bag capacity: 3 L, containing 2.5 L of reaction gas (formaldehyde concentration, about 100 ppm; oxygen, 20% by volume; nitrogen, balance: balance gas) containing the amount of aldehyde (formaldehyde) shown in Table 2 Bag size: 250 ⁇ 250 mm, Material: Polyester film / manufactured by ASONE Co., Ltd.), 500 mg of decomposing agent was added and left at 25 ° C. for 21 hours. (Measured by Gastec Co., Ltd.). The results are shown in Table 2. Further, the amount of carbon dioxide generated in the head space in the odor bag after standing at 25 ° C. for 21 hours was measured with a gas detector tube (manufactured by Gastec Co., Ltd.). The results are shown in Table 3.
  • Example 9 Aldehyde degradation test ( ⁇ 20 ° C.) The following aldehyde decomposition test was performed using the decomposition agent obtained in Example 2. “Odor bag” (bag capacity: 3 L, containing 2.5 L of reaction gas (acetaldehyde concentration, about 50 ppm; oxygen, 20% by volume; nitrogen, balance: balance gas) containing aldehyde (acetaldehyde) in the amount shown in Table 2 Bag size: 250 x 250 mm, Material: Polyester film / manufactured by ASONE Corporation), 500 mg of decomposing agent is put in, left at -20 ° C for 21 hours, and then only the headspace gas in the odor bag is put into another "odor bag” After transporting and returning to room temperature, the aldehyde (acetaldehyde) concentration was measured with a gas detector tube (manufactured by Gastec Co., Ltd.). The results are shown in Table 2.
  • Examples 1 to 3 show that odorous substances can be decomposed when platinum or a platinum-containing compound is supported on porous silica.
  • Comparative Example 1 in which platinum or a platinum-containing compound is not supported on porous silica, it can be seen from Table 3 that there is no resolution of odorous substances.
  • Test Example 8 of Table 2 although the formaldehyde residual concentration in Comparative Example 1 is lower than the initial concentration, it is presumed to be due to adsorption.
  • the present invention is useful for decomposing volatile odorous substances released from fish and meat.

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Abstract

La présente invention concerne un décomposeur pour substances odorantes, qui est obtenu en utilisant du platine avec support de silice poreuse ou un composé contenant du platine, et qui est utilisé en présence d'oxygène dans une atmosphère de 80 °C à -40 °C dans des cas où les substances odorantes contiennent au moins un composé volatil, choisi parmi les aldéhydes, les acides gras, les composés de soufre et les composés d'azote. La présente invention est utile dans la décomposition de substances odorantes volatiles provenant de poissons et de viandes, et analogues.
PCT/JP2016/070511 2015-07-15 2016-07-12 Agent réduisant les odeurs Ceased WO2017010472A1 (fr)

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WO2017188138A1 (fr) * 2016-04-27 2017-11-02 太陽化学株式会社 Agent de dégradation de cov
WO2019027057A1 (fr) * 2017-08-04 2019-02-07 国立大学法人北海道大学 Catalyseur pour décomposition oxydative et son utilisation
WO2019065504A1 (fr) * 2017-09-28 2019-04-04 株式会社フルヤ金属 Matériau de décomposition et procédé de décomposition l'utilisant
JP2019092419A (ja) * 2017-11-21 2019-06-20 株式会社Ｎｂｃメッシュテック 果物の熟成制御方法
CN112512682A (zh) * 2018-11-30 2021-03-16 住友化学株式会社 醛分解用催化剂
WO2022071379A1 (fr) * 2020-10-02 2022-04-07 三井化学株式会社 Catalyseur d'élimination d'odeurs et son utilisation

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JP7285518B2 (ja) 2017-08-04 2023-06-02 国立大学法人北海道大学 酸化分解用触媒及びその利用
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WO2022071379A1 (fr) * 2020-10-02 2022-04-07 三井化学株式会社 Catalyseur d'élimination d'odeurs et son utilisation
JPWO2022071379A1 (fr) * 2020-10-02 2022-04-07
CN116209520A (zh) * 2020-10-02 2023-06-02 三井化学株式会社 臭味去除催化剂及其用途
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