CN100360224C - Formaldehyde gas oxidation catalyst under room temperature - Google Patents
Formaldehyde gas oxidation catalyst under room temperature Download PDFInfo
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- CN100360224C CN100360224C CNB2004100479737A CN200410047973A CN100360224C CN 100360224 C CN100360224 C CN 100360224C CN B2004100479737 A CNB2004100479737 A CN B2004100479737A CN 200410047973 A CN200410047973 A CN 200410047973A CN 100360224 C CN100360224 C CN 100360224C
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- room temperature
- metal oxide
- formaldehyde
- oxidation catalyst
- metal
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- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 title claims abstract description 123
- 239000003054 catalyst Substances 0.000 title claims abstract description 43
- 230000003647 oxidation Effects 0.000 title claims abstract description 14
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 14
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 23
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 21
- 229910000510 noble metal Inorganic materials 0.000 claims abstract description 18
- 229910052751 metal Inorganic materials 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims abstract description 10
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims abstract description 7
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims abstract description 7
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims abstract description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000010931 gold Substances 0.000 claims abstract description 4
- 229910052763 palladium Inorganic materials 0.000 claims abstract description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052737 gold Inorganic materials 0.000 claims abstract description 3
- 229910000480 nickel oxide Inorganic materials 0.000 claims abstract description 3
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052697 platinum Inorganic materials 0.000 claims abstract description 3
- 229910052703 rhodium Inorganic materials 0.000 claims abstract description 3
- 239000010948 rhodium Substances 0.000 claims abstract description 3
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims abstract description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 8
- 241000370738 Chlorion Species 0.000 claims description 5
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- 239000000706 filtrate Substances 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 239000013049 sediment Substances 0.000 claims description 4
- 229910002651 NO3 Inorganic materials 0.000 claims description 3
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- DQMUQFUTDWISTM-UHFFFAOYSA-N O.[O-2].[Fe+2].[Fe+2].[O-2] Chemical compound O.[O-2].[Fe+2].[Fe+2].[O-2] DQMUQFUTDWISTM-UHFFFAOYSA-N 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 17
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 5
- 230000003197 catalytic effect Effects 0.000 abstract description 5
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 abstract description 2
- 229910017053 inorganic salt Inorganic materials 0.000 abstract description 2
- 230000001590 oxidative effect Effects 0.000 abstract description 2
- 239000000377 silicon dioxide Substances 0.000 abstract description 2
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 abstract 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 abstract 1
- 229910001960 metal nitrate Inorganic materials 0.000 abstract 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 abstract 1
- 230000001376 precipitating effect Effects 0.000 abstract 1
- 229910052707 ruthenium Inorganic materials 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 12
- 239000007789 gas Substances 0.000 description 10
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- KBJMLQFLOWQJNF-UHFFFAOYSA-N nickel(ii) nitrate Chemical class [Ni+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O KBJMLQFLOWQJNF-UHFFFAOYSA-N 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 238000000151 deposition Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000002390 rotary evaporation Methods 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 206010013786 Dry skin Diseases 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 2
- 238000003421 catalytic decomposition reaction Methods 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- MIVBAHRSNUNMPP-UHFFFAOYSA-N manganese(2+);dinitrate Chemical class [Mn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MIVBAHRSNUNMPP-UHFFFAOYSA-N 0.000 description 2
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 2
- 208000024891 symptom Diseases 0.000 description 2
- 241001466460 Alveolata Species 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- FDNDTQWNRFFYPE-UHFFFAOYSA-N carbonic acid;nitric acid Chemical compound OC(O)=O.O[N+]([O-])=O FDNDTQWNRFFYPE-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000003426 co-catalyst Substances 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 239000002120 nanofilm Substances 0.000 description 1
- 239000011858 nanopowder Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000011941 photocatalyst Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
- -1 wallpaper Substances 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
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- Catalysts (AREA)
Abstract
The present invention relates to a formaldehyde gas oxidation catalyst under the room temperature, and metal oxide is obtained by oxidating and precipitating metal soluble inorganic salt, such as metal nitrate, metal carbonate, etc. The metal oxide is loaded with a small amount of noble metal, and the formaldehyde oxidizing activity is obtained under the high room temperature. The catalyst is formed by using the metal oxide as a body and loading the noble metal component on the metal oxide. The formaldehyde gas oxidation catalyst under the room temperature is characterized in that the metal oxide component can be at least one kind of a metal oxide group, the noble metal component can be at least one kind of a noble metal group, the metal oxide group comprises alumina, nickel oxide, manganese dioxide, silicon dioxide and ferric oxide, and the noble metal group comprises platinum, ruthenium, gold, rhodium and palladium. The formaldehyde gas oxidation catalyst under the room temperature is composed of the ordinary metal oxide and a small amount of noble metal and can be effectively used for the formaldehyde catalytic oxidation under the room temperature. The catalytic activity of the formaldehyde gas oxidation catalyst under the room temperature is high, and the duration time of the formaldehyde gas oxidation catalyst under the room temperature is long. The conversion degree of the formaldehyde of the catalytic activity of the formaldehyde gas oxidation catalyst under the room temperature in the effective working time range can reach 100%, and the formaldehyde gas oxidation catalyst under the room temperature does not need other additional outer conditions when the catalyst is used. The formaldehyde gas oxidation catalyst under the room temperature saves the energy and has the generalized value.
Description
Technical field
The present invention is used for oxidation of formaldehyde gas under the room temperature condition, can at ambient temperature formaldehyde gas be oxidized to carbon dioxide and water.
Technical background
Formaldehyde is more typical indoor environmental pollution thing.The multiple indoor finishing material, as furniture paint, wallpaper, plastic floor, chemical fibre carpet, door and window etc., all might be to indoor release formaldehyde, especially now artificial board generally uses phenolic resins etc. can discharge the adhesive of formaldehyde, the sustainable several years of release formaldehyde in indoor environment, grievous injury human healthy.Studies show that, contact low concentration formaldehyde (0.017mg/m for a long time
3～0.068mg/m
3), though the symptom intensity that causes a little less than, the acute effect that symptom and formaldehyde produce is consistent.
At present, the pollutants such as strong adsorptivity absorbing formaldehyde of the main applied activated carbon of various air purifiers.Use porous carbon material always, Alveolate activated carbon capable is arranged, spheric active carbon, NACF, novel absorbent charcoal and molecular sieve, zeolite, adobe ore, activated alumina and silica gel etc. are as adsorbent.This kind method is fairly simple, but adsorbent need regularly replace.Traditional catalytic decomposition that formaldehyde is decomposed into harmless tasteless substance need be finished at a certain temperature (generally more than 200 ℃) with catalysis technique, operating cost is higher.Though the plasma-catalytic technology can be under normal temperature, normal pressure resolving harmful gas, can produce accessory substances such as carbon monoxide, ozone and nitrogen oxide, and the equipment price costliness of plasma can take place.The many catalytic decomposition formaldehyde technology of current research are nano-photo catalytic, as obtaining the nano solid supper corrosive acid photochemical catalyst of national inventing patent (patent No. ZL98115808.0).This class catalyst is mainly with TiO
2Nano-powder or film be as photochemical catalyst, the method for preparing raw material complexity, and the specification requirement height, and nano-photocatalyst needs specific excitation source.
Summary of the invention
The present invention is directed to the problems referred to above, a kind of high-selectivity catalyst that is used for non-photochemical catalytic oxidation low concentration formaldehyde under the room temperature condition is provided.This catalyst use be simple and easy to metal oxide and very small amount of noble metal be raw material, the preparation method is simple.The present invention is fully taking into account on the basis of previous studies, is carrying out the result of big quantity research.The catalyst that is provided just can be catalytically conveted to carbon dioxide and water with formaldehyde at ambient temperature fully, and conversion ratio remains on 100% in the considerable time scope.Do not need light source and complicated auxiliary device and external condition.
Catalyst of the present invention is carrier with the metal oxide, other noble metal of load 0.5～1%.The aforementioned metal oxide can be at least a in alundum (Al, nickel oxide, manganese dioxide, silica, the di-iron trioxide, and aforementioned noble metal component can platinum, at least a in the gold, rhodium, palladium.
Aforesaid catalyst, if solution acidity control is improper in the preparation process of metal oxide, activity of such catalysts is that the conversion ratio of formaldehyde can reduce.And noble metal component is during less than 0.5% (metallic element weight scaled value), and the durability of catalyst can reduce, and noble metal component then can reduce selection of catalysts greater than 1%.The aforementioned metal oxide component can directly be the oxide of this metal, also can be obtained by certain method by the inorganic salts of other modes with some form such as nitrate carbonate of this metal.The noble metal component of aforementioned 0.5-1% (metallic element weight scaled value) can be the form of the oxide of this metal or this metal and any inorganic salts and do not change its effect, it act as the co-catalyst or second carrier, looks application and condition and adjusts.The feature of this catalyst is that the metal oxide carrier surface has a certain amount of oxygen species O
2 -, O
-, O
2-, and be mainly O
-Noble metal component can improve the durability and the activity of catalyst.
According to the present invention, metal oxide carrier can be by the nitrate of this metal, and inorganic salt forms such as carbonate prepare by the co-precipitation oxidizing process.With the nitrate dissolving of certain metal, with sodium hydroxide solution pH value is adjusted to 12～13 such as earlier under stirring state, slowly adds the liquor natrii hypochloritis again, placement is spent the night.Solution is filtered with suction method, and the sediment that obtains is used deionized water drip washing repeatedly, up to detecting less than the chlorion in the filtrate with liquor argenti nitratis ophthalmicus.To be deposited in 70 ℃ of dryings then.Obtained after the metal oxide, in the above-mentioned noble metal one or both have been loaded on the metal oxide according to 0.5-1% (metallic element weight scaled value).Remove moisture with Rotary Evaporators after the load, again at 70 ℃ of finish-dryings.The catalyst screening that makes is the particle of certain order number.
Aforesaid catalyst according to different needs, can be made various structures, as load on the wall surface of honeycomb ceramic body or metal mesh structure, or open-celled foams also can be as the structural carrier of catalyst.Also catalyst can be made spherical or tabular use.
Preparation process of the present invention is simple, and is easy to operate.Compare with prior art, the present invention has following advantage:
(1) cheap being easy to get of Preparation of Catalyst raw material of the present invention, service condition is simple, can effectively be applied to oxidation of formaldehyde under the room temperature condition.
(2) catalyst of the present invention can catalysis formaldehyde be harmless carbon dioxide and water just at ambient temperature.
(3) catalyst of the present invention interval in actual working time in the conversion ratio of formaldehyde can reach 100%.
(4) catalyst amount of the present invention is few, and does not need to expend electric power heating power, energy savings.
In order to be illustrated more clearly in the present invention, enumerate following examples, but it there is not any restriction to scope of the present invention.
Embodiment 1
Get 100 gram manganese nitrates and be dissolved in a certain amount of water, under stirring state, with sodium hydroxide solution solution being transferred to PH is 12～13, adds the liquor natrii hypochloritis gradually according to manganese nitrate and clorox molar ratio 2～3, and placement is spent the night.Filtering-depositing is used deionized water drip washing.Drip washing is to detecting less than chlorion is arranged in the filtrate with liquor argenti nitratis ophthalmicus.To be deposited in 70 ℃ of dry for standby.Precipitation after the oven dry be impregnated in 1% the Pt solution.Behind the rotary evaporation 70 ℃ of oven dry.It is that 40～60 order size particles are standby that catalyst after the oven dry is sieved.
Embodiment 2
Get 100 gram nickel nitrates and be dissolved in a certain amount of water, under stirring state, with sodium hydroxide solution solution being transferred to PH is 12～13, adds the liquor natrii hypochloritis gradually according to nickel nitrate and clorox molar ratio 2～3, and placement is spent the night.Filtering-depositing is used deionized water drip washing.Drip washing is to detecting less than chlorion is arranged in the filtrate with liquor argenti nitratis ophthalmicus.To be deposited in 70 ℃ of dry for standby.Precipitation after the oven dry be impregnated in 1% the Au solution.Behind the rotary evaporation 70 ℃ of oven dry.It is that 40～60 order size particles are standby that catalyst after the oven dry is sieved.
Embodiment 3
Get 100 gram nickel nitrates and be dissolved in a certain amount of water, under stirring state, with sodium hydroxide solution solution being transferred to PH is 12～13, adds the liquor natrii hypochloritis gradually according to nickel nitrate and clorox molar ratio 2～3, and placement is spent the night.Filtering-depositing is used deionized water drip washing.Drip washing is to detecting less than chlorion is arranged in the filtrate with liquor argenti nitratis ophthalmicus.To be deposited in 70 ℃ of dry for standby.Precipitation after the oven dry be impregnated in the 0.5%Au-0.5%Pd solution.Behind the rotary evaporation 70 ℃ of oven dry.It is that 40～60 order size particles are standby that catalyst after the oven dry is sieved.
Embodiment 4
0.066 gram embodiment 1 catalyst is positioned in the tubular fixed-bed reactor reacts, experiment condition is as follows:
Volume is formed: oxygen: 20%, and nitrogen: 80%, formaldehyde gas produces with the formaldehyde gas generator, is blown into reaction system by nitrogen, and the control concentration of formaldehyde is 0.05%, and reaction velocity (GHSV) is 50,000/ hours.At ambient temperature, the conversion ratio of formaldehyde is 100%, and 48 hours duration, conversion ratio descends and to be about 70% afterwards, keeps 60 hours afterwards conversion ratio do not fall as follows.
Embodiment 5
0.066 gram embodiment 2 catalyst are positioned in the tubular fixed-bed reactor react, experiment condition is as follows:
Volume is formed: oxygen: 20%, and nitrogen: 80%, formaldehyde gas produces with the formaldehyde gas generator, is blown into reaction system by nitrogen, and the control concentration of formaldehyde is 0.05%, and reaction velocity (GHSV) is 50,000/ hours.At ambient temperature, the conversion ratio of formaldehyde is 100%, and 48 hours duration, descending afterwards is about 80%, keeps 48 hours afterwards conversion ratio do not fall as follows.
Embodiment 6
0.066 gram embodiment 3 catalyst are positioned in the tubular fixed-bed reactor react, experiment condition is as follows:
Volume is formed: oxygen: 20%, and nitrogen: 80%, formaldehyde gas produces with the formaldehyde gas generator, is blown into reaction system by nitrogen, and the control concentration of formaldehyde is 0.05%, and reaction velocity (GHSV) is 50,000/ hours.At ambient temperature, the conversion ratio of formaldehyde is 100%, and 48 hours duration, descending afterwards is about 70%, keeps 78 hours afterwards conversion ratio do not fall as follows.
Claims (1)
1. catalyst of oxidation of formaldehyde gas at ambient temperature, it is characterized in that this catalyst is a spot of noble metal component of load on metal oxide, described metal oxide is an alundum (Al, nickel oxide, manganese dioxide, at least a in the di-iron trioxide, described noble metal component is a platinum, gold, rhodium or palladium, the load capacity of the noble metal component on the aforementioned metal oxide carrier counts 0.5～＜1% with metallic element weight scaled value, described Preparation of catalysts method is: with the nitrate dissolving of the metal in the described metal oxide, under stirring state, the pH value is adjusted to 12～13 with sodium hydroxide solution, slowly add the liquor natrii hypochloritis again, placement is spent the night, filter with suction method then and obtain sediment, the sediment that obtains is used deionized water drip washing repeatedly, up to detecting less than the chlorion in the filtrate with liquor argenti nitratis ophthalmicus, then with sediment 7Q ℃ of drying, obtain described metal oxide, then above-mentioned noble metal is loaded on the described catalyst that makes on the metal oxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100479737A CN100360224C (en) | 2004-06-14 | 2004-06-14 | Formaldehyde gas oxidation catalyst under room temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100479737A CN100360224C (en) | 2004-06-14 | 2004-06-14 | Formaldehyde gas oxidation catalyst under room temperature |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1714930A CN1714930A (en) | 2006-01-04 |
| CN100360224C true CN100360224C (en) | 2008-01-09 |
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|---|---|---|---|
| CNB2004100479737A Expired - Fee Related CN100360224C (en) | 2004-06-14 | 2004-06-14 | Formaldehyde gas oxidation catalyst under room temperature |
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| CN102019189B (en) * | 2009-09-21 | 2013-01-09 | 北京纳维达斯科技有限公司 | Catalyst and material for formaldehyde decomposition |
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| CN102527228B (en) * | 2011-12-31 | 2015-11-18 | 南京亿谱环境服务有限公司 | A kind of formaldehyde scavenger of visible color change |
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| CN109794160A (en) * | 2017-11-16 | 2019-05-24 | 浙江盾安人工环境股份有限公司 | A kind of catalyst and preparation method thereof for decomposing formaldehyde |
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| CN109045959A (en) * | 2018-09-18 | 2018-12-21 | 南京大学射阳高新技术研究院 | A kind of reagent and method removing formaldehyde |
| CN110841627B (en) * | 2019-11-09 | 2021-12-03 | 上海纳米技术及应用国家工程研究中心有限公司 | Rare earth modified adsorption enrichment-catalytic oxidation bifunctional catalyst and preparation method and application thereof |
| CN111167281A (en) * | 2020-01-09 | 2020-05-19 | 珠海格力电器股份有限公司 | Manganese cerium oxide/active carbon composite material for formaldehyde decomposition and preparation method thereof |
| CN113426287A (en) * | 2021-06-08 | 2021-09-24 | 广州大学 | Formaldehyde removal material and preparation method and application thereof |
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| US5009872A (en) * | 1986-05-12 | 1991-04-23 | Atomic Energy Of Canada Ltd. | Method of oxidizing gaseous substances |
| US5585083A (en) * | 1995-03-30 | 1996-12-17 | The United States As Represented By The Administrator Of The National Aeronautics And Space Administration | Catalytic process for formaldehyde oxidation |
| JP2000044248A (en) * | 1998-05-22 | 2000-02-15 | Osaka Gas Co Ltd | Manganate, its preparation and oxidation catalyst |
| JP2000217897A (en) * | 1999-02-01 | 2000-08-08 | Matsushita Electric Ind Co Ltd | Air purifying material and air purifying device using same |
| JP2002177782A (en) * | 2000-12-18 | 2002-06-25 | Catalysts & Chem Ind Co Ltd | Catalyst precursor and catalyst obtained from the same |
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| CN1714930A (en) | 2006-01-04 |
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