CN115709094A - Non-noble metal catalyst for formaldehyde purification and preparation method thereof - Google Patents
Non-noble metal catalyst for formaldehyde purification and preparation method thereof Download PDFInfo
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- CN115709094A CN115709094A CN202211431396.6A CN202211431396A CN115709094A CN 115709094 A CN115709094 A CN 115709094A CN 202211431396 A CN202211431396 A CN 202211431396A CN 115709094 A CN115709094 A CN 115709094A
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- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 title claims abstract description 168
- 239000003054 catalyst Substances 0.000 title claims abstract description 66
- 229910000510 noble metal Inorganic materials 0.000 title claims abstract description 39
- 238000000746 purification Methods 0.000 title claims description 27
- 238000002360 preparation method Methods 0.000 title abstract description 12
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000002808 molecular sieve Substances 0.000 claims abstract description 26
- 239000000243 solution Substances 0.000 claims abstract description 23
- 239000012018 catalyst precursor Substances 0.000 claims abstract description 21
- 238000002156 mixing Methods 0.000 claims abstract description 20
- 238000003756 stirring Methods 0.000 claims abstract description 18
- 238000005406 washing Methods 0.000 claims abstract description 18
- 238000001914 filtration Methods 0.000 claims abstract description 17
- 238000001035 drying Methods 0.000 claims abstract description 16
- 229910052751 metal Chemical class 0.000 claims abstract description 12
- 239000002184 metal Chemical class 0.000 claims abstract description 12
- 239000012266 salt solution Substances 0.000 claims abstract description 9
- 239000003513 alkali Substances 0.000 claims abstract description 7
- 238000001354 calcination Methods 0.000 claims description 26
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 24
- 239000008367 deionised water Substances 0.000 claims description 16
- 229910021641 deionized water Inorganic materials 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 238000003828 vacuum filtration Methods 0.000 claims description 4
- 229910052684 Cerium Inorganic materials 0.000 claims description 2
- 229910021591 Copper(I) chloride Inorganic materials 0.000 claims description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 2
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 2
- OXBLHERUFWYNTN-UHFFFAOYSA-M copper(I) chloride Chemical compound [Cu]Cl OXBLHERUFWYNTN-UHFFFAOYSA-M 0.000 claims description 2
- 239000001257 hydrogen Substances 0.000 claims description 2
- 229910052739 hydrogen Inorganic materials 0.000 claims description 2
- 239000011261 inert gas Substances 0.000 claims description 2
- 229910021645 metal ion Inorganic materials 0.000 claims description 2
- 230000008569 process Effects 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- 230000008030 elimination Effects 0.000 abstract 1
- 238000003379 elimination reaction Methods 0.000 abstract 1
- 239000007800 oxidant agent Substances 0.000 abstract 1
- 239000002243 precursor Substances 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- 238000005342 ion exchange Methods 0.000 description 6
- 230000004048 modification Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 6
- 238000005303 weighing Methods 0.000 description 6
- 230000003197 catalytic effect Effects 0.000 description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000003917 TEM image Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000002071 nanotube Substances 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- 229910000314 transition metal oxide Inorganic materials 0.000 description 2
- 208000005623 Carcinogenesis Diseases 0.000 description 1
- 208000019693 Lung disease Diseases 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 208000000453 Skin Neoplasms Diseases 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000036952 cancer formation Effects 0.000 description 1
- 231100000357 carcinogen Toxicity 0.000 description 1
- 231100000504 carcinogenesis Toxicity 0.000 description 1
- 239000003183 carcinogenic agent Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000008098 formaldehyde solution Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 201000000849 skin cancer Diseases 0.000 description 1
- 229910000033 sodium borohydride Inorganic materials 0.000 description 1
- 239000012279 sodium borohydride Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000002798 spectrophotometry method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
The invention discloses a non-noble metal catalyst for purifying formaldehyde and a preparation method thereof; the catalyst consists of a molecular sieve carrier and non-noble metal active components; the preparation method of the catalyst comprises the following steps: firstly, mixing and stirring a molecular sieve carrier and an alkali solution with a certain concentration for a period of time, washing and filtering to obtain a modified molecular sieve; then mixing and stirring the modified molecular sieve and a metal salt solution with a certain concentration for a period of time, and then washing, filtering and drying to obtain a catalyst precursor; finally, the precursor is calcined to obtain the product of the catalyst for purifying formaldehydeAn oxidizing agent; the catalyst provided by the invention has highly dispersed metal active center, and can effectively catalyze and oxidize formaldehyde into CO at room temperature 2 And H 2 O, and keeps good stability, thereby realizing green elimination of formaldehyde; and the raw materials are easy to obtain, the preparation method is simple, the cost is low, and the popularization and the application are convenient.
Description
Technical Field
The invention relates to the technical field of formaldehyde purification, in particular to a non-noble metal catalyst for formaldehyde purification and a preparation method thereof.
Background
The formaldehyde in the room is mainly from furniture adhesive, paint and coating on the wall surface, and the like. Formaldehyde is a colorless but pungent gas with a relative density of 1.067 (air = 1), a boiling point of-19 ℃, is highly toxic and carries a high risk of carcinogenesis. If a human body is exposed to an indoor environment containing formaldehyde for a long time, diseases such as eye discomfort, lung diseases, skin cancer and the like can be caused. In 2017, the world health organization listed formaldehyde as a class of carcinogens. The indoor formaldehyde concentration can not exceed 0.1mg/m according to the regulations of China 3 . Therefore, in order to improve the indoor air environment, it is important to find a method for effectively removing indoor formaldehyde. To date, various methods have been investigated to improve air quality and reduce indoor formaldehyde concentrations, including adsorption, plasma decomposition, thermal oxidation, catalytic oxidation, photocatalytic oxidation, bio/plant filtration, such as phytoremediation and microbial removal, and the like. Wherein, the catalytic oxidation is one of the most mature and effective technologies for removing formaldehyde, and formaldehyde is oxidized into nontoxic and harmless CO through chemical conversion 2 And H 2 And O. One major challenge still facing catalytic oxidation technology is how to select a suitable catalyst from among the many available catalysts. Currently, the catalysts available for removing formaldehyde are mainly classified into two types: a supported noble metal catalyst and a non-noble metal oxide.
The Chinese invention patent CN 103736484A discloses a supported monolithic catalyst for formaldehyde purification, which is characterized in that titanium dioxide nanotubes are used as a carrier, and one or a mixture of at least two of noble metals of Pt, ru, rh, pd and Au is supported on the titanium dioxide nanotubes. The catalyst can keep higher activity and stability for purifying formaldehyde at low temperature, but the supported element is noble metal, so the catalyst is difficult to be widely applied due to high cost.
Chinese patent CN 105148917A discloses a method for improving catalytic efficiency of formaldehyde catalyst and formaldehyde catalyst thereof, which is characterized in that sodium borohydride solution is used to reduce transition metal oxide, thereby increasing oxygen defect on the surface of transition metal oxide. The invention uses non-noble metal elements, effectively reduces the cost of the catalyst, but the catalyst can not realize effective formaldehyde purification at room temperature, so the catalyst is still difficult to popularize and use.
Disclosure of Invention
Based on the problems of various catalysts for formaldehyde purification, such as high cost of noble metal catalysts, low efficiency of non-noble metal catalysts at room temperature and the like, the invention aims to provide a novel non-noble metal catalyst for formaldehyde purification and a preparation method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
a non-noble metal catalyst for purifying formaldehyde is composed of a modified molecular sieve carrier and non-noble metal active components; the mass percentage of the non-noble metal active component is 0.1-10% by taking the weight of the catalyst as 100%; the non-noble metal active component is one or a mixture of more of Ce, mn, fe, co, ni, cu and Zn.
Further, in the non-noble metal catalyst for formaldehyde purification, the modified molecular sieve carrier is prepared by the following method: and fully mixing the molecular sieve carrier and the aqueous alkali, stirring for 1-3h, washing with deionized water, and performing vacuum filtration to obtain filter residue which is the modified molecular sieve.
Further, in the non-noble metal catalyst for formaldehyde purification, the molecular sieve carrier is a ZSM-5 molecular sieve.
Further, in the non-noble metal catalyst for formaldehyde purification, the alkali solution is a sodium hydroxide solution or a potassium hydroxide solution.
Further, the concentration of the alkali solution is 0.01-1 mol/L.
The second technical scheme provided by the invention is that the preparation method of the non-noble metal catalyst for formaldehyde purification sequentially comprises the following steps:
1) Preparing a metal salt solution, fully mixing the modified molecular sieve and the metal salt solution, stirring for 1-3h, then carrying out vacuum filtration, washing with a proper amount of deionized water in the process of filtration, taking the obtained filter residue as a catalyst precursor, and fully drying the catalyst precursor to obtain the catalyst precursor;
2) Calcination of
And (3) calcining the catalyst precursor in a muffle furnace, and cooling to room temperature to obtain the catalyst.
Further, in the non-noble metal catalyst for formaldehyde purification, the concentration of the metal ion solution in the metal salt solution is 1-100 mmol/L.
Furthermore, in the above method for preparing a non-noble metal catalyst for formaldehyde purification, the active metal salt solution is Ce (NO) 3 ) 3 、Mn(NO 3 ) 2 、MnCl 2 、Fe(NO 3 ) 3 、FeCl 3 、FeCl 2 、Co(NO 3 ) 2 、CoCl 2 、Co(CH 3 COO) 2 、Ni(NO 3 ) 2 、NiCl 2 、Cu(SO 4 ) 2 And CuCl 2 One or more of the above.
Further, in the above method for preparing a non-noble metal catalyst for formaldehyde purification, the calcination is performed in one or more of air calcination, inert gas calcination, and hydrogen calcination.
Further, in the preparation method of the non-noble metal catalyst for formaldehyde purification, the calcination temperature is 100-1000 ℃, the heat preservation time is 0.5-10 h, and the temperature rise rate is 1-20 ℃/min.
Compared with the prior art, the invention has the following beneficial effects:
1. the preparation technical scheme of the non-noble metal catalyst for purifying formaldehyde provided by the invention is simple to operate, low in preparation cost and convenient to popularize and apply.
2. After the carrier of the catalyst provided by the invention is treated by the alkaline solution, the surface of the catalyst contains a large amount of hydroxyl, which is beneficial to accelerating the formaldehyde oxidation rate; the catalyst with highly dispersed metal active centers can be obtained by simple calcination after loading active metals, and is beneficial to effectively degrading formaldehyde at room temperature.
3. The catalyst provided by the invention can effectively decompose formaldehyde into CO at room temperature 2 And H 2 And O, the formaldehyde degradation efficiency is good, and the stability is excellent.
Drawings
FIG. 1 is a 20nmTEM plot of the catalyst prepared as described in example 3;
FIG. 2 is a 10nmTEM plot of the prepared catalyst described in example 3;
FIG. 3 is a 0.5umTEM image of the catalyst prepared as described in example 6;
FIG. 4 is a 20nmTEM plot of the catalyst prepared as described in example 6.
Detailed Description
The non-noble metal-based catalyst for formaldehyde purification and the preparation method thereof according to the present invention will be described in further detail with reference to the following examples, but the scope of the present invention is not limited to the scope shown in the examples.
Example 1
The first step is as follows: modification of ZSM-5 molecular sieve
Weighing 2g of ZSM-5 molecular sieve in a beaker, adding 100ml of 1mol/L NaOH solution, fully mixing and stirring for 2 hours, filtering, and washing with a proper amount of deionized water to obtain filter residue which is the modified ZSM-5 molecular sieve carrier.
The second step is that: ion exchange process
100ml of 0.005mol/L Mn (NO) 3 ) 2 And fully mixing the solution with the modified ZSM-5, stirring for 2 hours, filtering, washing with a proper amount of deionized water, and fully drying filter residues in a drying oven to obtain a catalyst precursor.
The third step: calcination of
And (3) calcining the catalyst precursor in a muffle furnace, heating to 500 ℃ at the speed of 5 ℃/min, preserving the temperature for 2h, and cooling to room temperature to obtain the catalyst for purifying formaldehyde.
Example 2
The first step is as follows: modification of ZSM-5 molecular sieve
Weighing 2g of ZSM-5 molecular sieve in a beaker, adding 100ml of 1mol/L NaOH solution, fully mixing and stirring for 2 hours, filtering, and washing with a proper amount of deionized water, wherein the obtained filter residue is the modified ZSM-5 molecular sieve carrier.
The second step: ion exchange process
100ml of 0.01mol/L Mn (NO) is prepared 3 ) 2 And fully mixing the solution with the modified ZSM-5, stirring for 2 hours, filtering, washing with a proper amount of deionized water, and fully drying filter residues in a drying oven to obtain a catalyst precursor.
The third step: calcination of
And (3) calcining the catalyst precursor in a muffle furnace, heating to 500 ℃ at the speed of 5 ℃/min, preserving the temperature for 2h, and cooling to room temperature to obtain the product, namely the catalyst for purifying formaldehyde.
Example 3
The first step is as follows: modification of ZSM-5 molecular sieve
Weighing 2g of ZSM-5 molecular sieve in a beaker, adding 100ml of 1mol/L NaOH solution, fully mixing and stirring for 2 hours, filtering, and washing with a proper amount of deionized water to obtain filter residue which is the modified ZSM-5 molecular sieve carrier.
The second step is that: ion exchange process
The Mn (NO) of 100mL 0.05mol/L is prepared 3 ) 2 Mixing the solution with modified ZSM-5, stirring for 2 hr, filtering, washing with deionized water, and drying the residue in a drying ovenAnd drying to obtain the catalyst precursor.
The third step: calcination of
The catalyst precursor is placed in a muffle furnace for calcination, the temperature is raised to 500 ℃ at the speed of 5 ℃/min, the temperature is kept for 2h, and the catalyst is cooled to room temperature, and the obtained product is the catalyst for formaldehyde purification, and a TEM image of the catalyst is shown in figures 1 and 2.
Example 4
The first step is as follows: modification of ZSM-5 molecular sieve
Weighing 2g of ZSM-5 molecular sieve in a beaker, adding 100ml of 1mol/L NaOH solution, fully mixing and stirring for 2 hours, filtering, washing with a proper amount of deionized water, and taking the obtained filter residue as a modified ZSM-5 molecular sieve carrier
The second step: ion exchange process
100ml of Mn (NO) of 0.1mol/L is prepared 3 ) 2 And (3) fully mixing the solution with the modified ZSM-5, stirring for 2 hours, filtering, washing with a proper amount of deionized water, and fully drying filter residues in a drying oven to obtain a catalyst precursor.
The third step: calcination of
And (3) calcining the catalyst precursor in a muffle furnace, heating to 500 ℃ at the speed of 5 ℃/min, preserving the temperature for 2h, and cooling to room temperature to obtain the product, namely the catalyst for purifying formaldehyde.
Example 5
The first step is as follows: modification of ZSM-5 molecular sieve
Weighing 2g of ZSM-5 molecular sieve in a beaker, adding 100ml of 1mol/L NaOH solution, fully mixing and stirring for 2 hours, filtering, and washing with a proper amount of deionized water to obtain filter residue which is the modified ZSM-5 molecular sieve carrier.
The second step is that: and (4) ion exchange process. 100ml of 0.1mol/L Ce (NO) was added 3 ) 3 And fully mixing the solution with the modified ZSM-5, stirring for 2 hours, filtering, washing with a proper amount of deionized water, and fully drying filter residues in a drying oven to obtain a catalyst precursor.
The third step: calcination of
And (3) calcining the catalyst precursor in a muffle furnace, heating to 500 ℃ at the speed of 5 ℃/min, preserving the temperature for 2h, and cooling to room temperature to obtain the catalyst for purifying formaldehyde.
Example 6
The first step is as follows: modification of ZSM-5 molecular sieve
Weighing 2g of ZSM-5 molecular sieve in a beaker, adding 100ml of 1mol/L NaOH solution, fully mixing and stirring for 2 hours, filtering, and washing with a proper amount of deionized water, wherein the obtained filter residue is the modified ZSM-5 molecular sieve carrier.
The second step is that: and (4) carrying out an ion exchange process. 100ml of 0.05mol/L Ce (NO) is prepared 3 ) 3 And fully mixing the solution with the modified ZSM-5, stirring for 2 hours, filtering, washing with a proper amount of deionized water, and fully drying filter residues in a drying oven to obtain a catalyst precursor.
The third step: calcination of
The catalyst precursor was calcined in a muffle furnace, heated to 500 ℃ at a rate of 5 ℃/min, held for 2h, and cooled to room temperature to obtain the catalyst for formaldehyde purification, with TEM images shown in fig. 3 and 4.
300mg of each of the catalysts described in examples 1 to 6 was used in a fixed bed reactor to evaluate the catalytic activity of HCHO at room temperature. By passing a stream of N2 at a flow rate of 20mL/min through a 5% strength by weight aqueous formaldehyde solution and then mixing with 25% of a flow rate of 80mL/min 2 Mixing (N) 2 As an equilibrium gas), HCHO gas is generated at a concentration of 50ppm, and the space velocity is 20000mL g -1 ·h -1 . The conversion of formaldehyde was determined by measuring the concentration of HCHO in the inlet and outlet streams. The formaldehyde concentration was determined by phenol spectrophotometry as follows: first, a cumulative volume of 50mL of a gas stream containing HCHO was bubbled through a solution of C 6 H 4 SN(CH 3 )C＝NNH 2 ·HCl(1×10 -4 wt%,5 mL); then, NH is added 4 Fe(SO 4 ) 2 ·12H 2 O (1 wt%,0.4mL, dissolved in 0.1M HCl) and the mixture was left to stand in the dark for 15 minutes. HCHO concentrations were obtained by reading the absorbance at 630nm using a spectrophotometer and comparing the data to a standard curve. The results of activity evaluation are shown in Table 1.
TABLE 1 evaluation results of catalyst Activity
Claims (10)
1. A non-noble metal-based catalyst for formaldehyde purification, characterized in that: the non-noble metal catalyst consists of a modified molecular sieve carrier and non-noble metal active components; the mass percentage of the non-noble metal active component is 0.1-10% by taking the weight of the catalyst as 100%; the non-noble metal active component is one or a mixture of more of Ce, mn, fe, co, ni, cu and Zn.
2. A non-noble metal-based catalyst for formaldehyde purification according to claim 1, wherein said modified molecular sieve support is prepared by a method comprising: and fully mixing the molecular sieve carrier and the aqueous alkali, stirring for 1-3h, washing with deionized water, and performing vacuum filtration to obtain filter residue which is the modified molecular sieve.
3. A non-noble metal-based catalyst for formaldehyde purification according to claim 1, wherein the molecular sieve support is ZSM-5 molecular sieve.
4. A non-noble metal-based catalyst for formaldehyde purification according to claim 1, wherein the alkali solution is sodium hydroxide solution or potassium hydroxide solution.
5. A non-noble metal-based catalyst for formaldehyde purification according to claim 1, wherein the concentration of the alkali solution is 0.01 to 1mol/L.
6. The method for preparing a non-noble metal-based catalyst for formaldehyde purification according to claim 1, comprising the following steps in order:
1) Preparing a metal salt solution, fully mixing the modified molecular sieve and the metal salt solution, stirring for 1-3h, then carrying out vacuum filtration, washing with a proper amount of deionized water in the process of filtration, taking obtained filter residues as a catalyst precursor, and fully drying the catalyst precursor to obtain the catalyst precursor;
2) Calcination of
And (3) calcining the catalyst precursor in a muffle furnace, and cooling to room temperature to obtain the catalyst.
7. The method of claim 1, wherein the metal ion solution has a concentration of 1100mmol/L in the metal salt solution.
8. The method of claim 7, wherein the active metal salt solution is Ce (NO) 3 ) 3 、Mn(NO 3 ) 2 、MnCl 2 、Fe(NO 3 ) 3 、FeCl 3 、FeCl 2 、Co(NO 3 ) 2 、CoCl 2 、Co(CH 3 COO) 2 、Ni(NO 3 ) 2 、NiCl 2 、Cu(SO 4 ) 2 And CuCl 2 One or more of the above.
9. The method for preparing a non-noble metal catalyst for formaldehyde purification according to claim 1, wherein the calcination is one or more of air calcination, inert gas calcination, and hydrogen calcination.
10. The method for preparing a non-noble metal catalyst for formaldehyde purification according to claim 1, wherein the calcination temperature is 100-1000 ℃, the holding time is 0.5-10 h, and the heating rate is 1-20 ℃/min.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104907069A (en) * | 2015-04-22 | 2015-09-16 | 中国科学院生态环境研究中心 | Catalyst for room temperature formaldehyde purification, and use thereof |
| CN105013491A (en) * | 2015-07-06 | 2015-11-04 | 中山大学 | Novel efficient formaldehyde catalyst and preparation method thereof |
| CN107159106A (en) * | 2017-07-12 | 2017-09-15 | 河南西超实业有限公司 | A kind of preparation method of formaldehyde adsorbent and obtained formaldehyde adsorbent |
| CN107570202A (en) * | 2017-08-29 | 2018-01-12 | 中山大学 | A kind of molecular sieve type catalyst for purifying formaldehyde and preparation method thereof |
| CN112871202A (en) * | 2021-01-11 | 2021-06-01 | 宁波方太厨具有限公司 | Preparation method of catalyst for catalytic decomposition of formaldehyde |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104907069A (en) * | 2015-04-22 | 2015-09-16 | 中国科学院生态环境研究中心 | Catalyst for room temperature formaldehyde purification, and use thereof |
| CN105013491A (en) * | 2015-07-06 | 2015-11-04 | 中山大学 | Novel efficient formaldehyde catalyst and preparation method thereof |
| CN107159106A (en) * | 2017-07-12 | 2017-09-15 | 河南西超实业有限公司 | A kind of preparation method of formaldehyde adsorbent and obtained formaldehyde adsorbent |
| CN107570202A (en) * | 2017-08-29 | 2018-01-12 | 中山大学 | A kind of molecular sieve type catalyst for purifying formaldehyde and preparation method thereof |
| CN112871202A (en) * | 2021-01-11 | 2021-06-01 | 宁波方太厨具有限公司 | Preparation method of catalyst for catalytic decomposition of formaldehyde |
Non-Patent Citations (1)
| Title |
|---|
| 周元: "天然沸石负载Pt催化剂的HCHO室温催化氧化研究", 《中国优秀硕士学位论文全文数据库工程科技Ⅰ辑》, no. 1, pages 027 - 415 * |
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