CN114177901A - Preparation method of mesoporous metal oxide catalytic material - Google Patents
Preparation method of mesoporous metal oxide catalytic material Download PDFInfo
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- 229910044991 metal oxide Inorganic materials 0.000 title claims abstract description 29
- 150000004706 metal oxides Chemical class 0.000 title claims abstract description 29
- 230000003197 catalytic effect Effects 0.000 title claims abstract description 15
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000002243 precursor Substances 0.000 claims abstract description 18
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- 238000001035 drying Methods 0.000 claims abstract description 3
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- 238000000034 method Methods 0.000 claims description 11
- 238000009826 distribution Methods 0.000 claims description 7
- 239000002904 solvent Substances 0.000 claims description 7
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 4
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 claims description 4
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 claims description 4
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- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 2
- 239000005751 Copper oxide Substances 0.000 claims description 2
- 239000004640 Melamine resin Substances 0.000 claims description 2
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- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 2
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims description 2
- XHCLAFWTIXFWPH-UHFFFAOYSA-N [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] XHCLAFWTIXFWPH-UHFFFAOYSA-N 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 238000005266 casting Methods 0.000 claims description 2
- 229910000420 cerium oxide Inorganic materials 0.000 claims description 2
- 229910000423 chromium oxide Inorganic materials 0.000 claims description 2
- 229910000431 copper oxide Inorganic materials 0.000 claims description 2
- 238000007598 dipping method Methods 0.000 claims description 2
- 229920005546 furfural resin Polymers 0.000 claims description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 2
- 239000000395 magnesium oxide Substances 0.000 claims description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 2
- 239000012702 metal oxide precursor Substances 0.000 claims description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 2
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims description 2
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 claims description 2
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 2
- 229920000767 polyaniline Polymers 0.000 claims description 2
- 229920002223 polystyrene Polymers 0.000 claims description 2
- 239000004814 polyurethane Substances 0.000 claims description 2
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- 235000019698 starch Nutrition 0.000 claims description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 2
- 229910001935 vanadium oxide Inorganic materials 0.000 claims description 2
- 239000011787 zinc oxide Substances 0.000 claims description 2
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 18
- 239000002184 metal Substances 0.000 abstract description 18
- 238000000746 purification Methods 0.000 abstract description 3
- 239000003054 catalyst Substances 0.000 abstract 2
- 239000000969 carrier Substances 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 28
- HSJPMRKMPBAUAU-UHFFFAOYSA-N cerium(3+);trinitrate Chemical compound [Ce+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O HSJPMRKMPBAUAU-UHFFFAOYSA-N 0.000 description 20
- 229910000314 transition metal oxide Inorganic materials 0.000 description 19
- 239000002105 nanoparticle Substances 0.000 description 10
- OERNJTNJEZOPIA-UHFFFAOYSA-N zirconium nitrate Chemical compound [Zr+4].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O OERNJTNJEZOPIA-UHFFFAOYSA-N 0.000 description 10
- 239000006185 dispersion Substances 0.000 description 6
- MZYYQKIROKLTID-UHFFFAOYSA-N C(C)O.[N+](=O)([O-])[O-].[Zr+4].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-] Chemical compound C(C)O.[N+](=O)([O-])[O-].[Zr+4].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-] MZYYQKIROKLTID-UHFFFAOYSA-N 0.000 description 5
- 238000007720 emulsion polymerization reaction Methods 0.000 description 5
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- 239000003981 vehicle Substances 0.000 description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000013335 mesoporous material Substances 0.000 description 2
- 238000001000 micrograph Methods 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000001878 scanning electron micrograph Methods 0.000 description 2
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- 238000001291 vacuum drying Methods 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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- 238000001027 hydrothermal synthesis Methods 0.000 description 1
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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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/10—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of rare earths
-
- 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
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/002—Mixed oxides other than spinels, e.g. perovskite
-
- 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
-
- 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
- B01J35/64—Pore diameter
- B01J35/643—Pore diameter less than 2 nm
-
- 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
- B01J35/64—Pore diameter
- B01J35/647—2-50 nm
-
- 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
- B01J35/64—Pore diameter
- B01J35/651—50-500 nm
-
- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/0009—Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
- B01J37/0018—Addition of a binding agent or of material, later completely removed among others as result of heat treatment, leaching or washing,(e.g. forming of pores; protective layer, desintegrating by heat)
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/01—Engine exhaust gases
- B01D2258/012—Diesel engines and lean burn gasoline engines
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- Combustion & Propulsion (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
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Abstract
The invention discloses a preparation method of a mesoporous metal oxide catalytic material, which comprises the following steps: the preparation method comprises the steps of mixing a precursor solution of metal with a template material with a certain size, drying and roasting to obtain the metal template. The preparation method is simple and practical, and the mesoporous structure of the material can be regulated and controlled by different template materials. Can be applied to the purification of the tail gas of the motor vehicle in the form of catalysts, catalytic auxiliaries or catalyst carriers, and the like.
Description
Technical Field
The invention relates to a preparation method of a mesoporous metal oxide catalytic material, belonging to the field of catalytic materials.
Background
The conservation quantity of motor vehicles in China is improved year by year, the environmental problems caused by motor vehicle tail gas pollutants are increasingly aggravated, and the health of human bodies is seriously influenced. At present, a tail gas purification device is mainly installed at the tail part of an engine of a motor vehicle to realize the catalytic conversion of tail gas, so that the emission of tail gas pollutants of the motor vehicle is reduced from the source.
In exhaust gas purification devices, metal oxide catalytic materials play a crucial role. The pore structure, especially the mesoporous structure, of the metal oxide not only affects the mass transfer and heat transfer of the tail gas, but also significantly affects the catalytic activity and the service life of the catalytic material. In the preparation process of the material, metal oxide grains are easy to gather, the mesoporous structure is difficult to maintain, and the aperture is difficult to control. Therefore, how to realize the regulation and control of the pore structure of the mesoporous metal oxide catalytic material is a problem to be solved urgently.
Disclosure of Invention
The invention mainly aims to provide a preparation method of a mesoporous metal oxide catalytic material for purifying motor vehicle exhaust, so as to realize regulation and control of a mesoporous structure of the catalytic material and optimize the performance of the catalytic material.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention comprises the following steps:
the embodiment of the invention provides a preparation method of a mesoporous transition metal oxide material, which comprises the following steps:
(1) preparing a template material with better thermal stability;
(2) mixing a metal oxide precursor solution with a template material;
(3) drying to remove the solvent, and then removing the template material by high-temperature roasting to obtain the mesoporous metal oxide material.
In the present invention, the metal oxide is a metal oxide of group IIA, group IIIA and subgroup in the periodic table of elements, including but not limited to derivatives thereof.
Preferably, the transition metal oxide is selected from any one of the following materials:
(i) yttrium oxide, titanium oxide, cerium oxide, lanthanum oxide, zirconium oxide, aluminum oxide, iron oxide, manganese oxide, vanadium oxide, chromium oxide, zinc oxide, copper oxide, magnesium oxide;
(ii) (ii) a derivative of the oxide of (i), a solid solution of two or more different metal oxides.
The template material has certain strength, and can play a certain supporting role on the formation of metal oxide grains in the preparation process of the mesoporous metal oxide, so that the damage of a mesoporous structure caused by the growth of the metal oxide grains is prevented.
Preferably, the template material is selected from any one of the following materials:
(a) furfural resin microsphere particle, phenol resin microsphere particle, polyaniline microsphere particle, polystyrene microsphere particle, polyacrylonitrile microsphere particle, melamine resin particle, polyacrylate resin particle, polyurethane particle, starch particle, carbon particle, etc
(b) Homologues, derivatives or mixtures of the particles of (a).
Preferably, the size of the template material is between 0 and 150 nm.
Preferably, the preparation method of the template material includes, but is not limited to, emulsion polymerization, suspension polymerization, dispersion polymerization, precipitation polymerization, spray drying, hydrothermal reaction, and the like.
The mixing method of the metal precursor solution and the template material is selected from one of dipping, casting, spraying and blending.
Preferably, the method of mixing the metal precursor solution with the template material is selected from one of impregnation and blending.
The invention also aims to provide a mesoporous metal oxide material prepared by the preparation method, wherein the pore size distribution of the mesoporous metal oxide material is concentrated at 5-30 nm. The pore structure may be ordered or amorphous.
The invention has the beneficial effects that:
the template material is simple to prepare, and mesoporous materials with different apertures can be constructed by adjusting the size of the template; the template material plays a supporting role in a high-temperature environment, so that the damage of a pore structure of the transition metal oxide caused by grain growth in the high-temperature roasting process is prevented; the prepared mesoporous material can be used in the field of automobile exhaust catalysis.
Drawings
FIG. 1 is a scanning electron micrograph of a template material in example 1
FIG. 2 is a scanning electron micrograph of a mesoporous metal oxide prepared in example 2
FIG. 3 is a graph showing the distribution of pore diameters of mesoporous metal oxides in examples 1 and 2
The present invention is further described in conjunction with the appended drawings and the following detailed description so that those skilled in the art can better understand the present invention and can implement it, but the examples are not intended to limit the present invention.
Detailed Description
Example 1
2.56g of cerium nitrate and 2.53g of zirconium nitrate were weighed and dissolved in 5mL of ethanol, respectively. And then mixing the cerium nitrate and the zirconium nitrate ethanol solution, and stirring for 2 hours at the rotating speed of 700 r/min by adopting magnetic stirring to obtain the metal precursor ethanol solution. The metal precursor was dried in a vacuum oven at 80 ℃ to remove the solvent. Finally, roasting the mixture at 600 ℃ to remove the template agent, thereby obtaining the mesoporous transition metal oxide material.
The transition metal oxide obtained by the method has a porous structure, the pore radius distribution of the transition metal oxide is concentrated between 0nm and 30nm, and the pore radius distribution is shown in figure 3.
Example 2
Firstly, preparing a template material, and preparing polyacrylonitrile nano-particles by taking acrylonitrile as a monomer through emulsion polymerization, wherein the particle size of the nano-particles is 70nm, and a scanning electron microscope image of the nano-particles is shown in figure 1. Using the polymer particles as a template, the polymer particle dispersion was placed in a clean petri dish and dried to obtain a flake formed by the particles, the surface topography of which is shown in FIG. 1. 2.56g of cerium nitrate and 2.53g of zirconium nitrate were weighed and dissolved in 5mL of ethanol, respectively. And then mixing the cerium nitrate and the zirconium nitrate ethanol solution, and stirring for 2 hours at the rotating speed of 700 r/min by adopting magnetic stirring to obtain the metal precursor ethanol solution. And (3) soaking the sheet formed by assembling the template materials in ethanol solution of the metal precursor for 24 hours, and filtering to remove the redundant metal precursor solution. And (3) putting the template agent sheet soaked with the metal precursor into a vacuum drying oven at 80 ℃ to remove the solvent. And finally, roasting at 600 ℃ for temperature programming to remove the template agent to obtain the mesoporous transition metal oxide material, wherein a scanning electron microscope image of the mesoporous transition metal oxide material is shown in figure 2.
The transition metal oxide obtained by the method has a porous structure, the pore radius distribution of the transition metal oxide is concentrated between 0nm and 60nm, and the pore radius distribution is shown in figure 3.
Example 3
Firstly, preparing a template material, and preparing the nano-particles of the poly-phenolic resin by taking phenol and formaldehyde as monomers through emulsion polymerization, wherein the particle size of the nano-particles is 50nm, and the nano-particles are taken as the template material. 2.56g of cerium nitrate and 0.25g of zirconium nitrate were weighed and dissolved in 5mL of ethanol, respectively. And then mixing the cerium nitrate and the zirconium nitrate ethanol solution, and stirring for 2 hours at the rotating speed of 700 r/min by adopting magnetic stirring to obtain the metal precursor ethanol solution. Mixing the template material dispersion liquid with an ethanol solution of a metal precursor, wherein the addition amount of the template material dispersion liquid is 2-5 g. The mixed solution was put into a vacuum oven at 80 ℃ to remove the solvent. Finally, removing the template agent by 600 ℃ temperature programming roasting to obtain the mesoporous transition metal oxide material.
The transition metal oxide obtained by the method has a porous structure, and the radius of pores of the transition metal oxide is distributed between 0nm and 50 nm.
Example 4
Firstly, preparing a template material, and preparing polyacrylonitrile nano particles by taking methyl methacrylate as a monomer through emulsion polymerization, wherein the particle size of the nano particles is 40nm, and the nano particles are taken as the template material. The template material dispersion is placed in a clean culture dish and dried to obtain a thin sheet. 2.56g of cerium nitrate and 0.25g of zirconium nitrate were weighed and dissolved in 5mL of ethanol, respectively. And then mixing the cerium nitrate and the zirconium nitrate ethanol solution, and stirring for 2 hours at the rotating speed of 700 r/min by adopting magnetic stirring to obtain the metal precursor ethanol solution. And (3) soaking the sheet formed by assembling the template materials in ethanol solution of the metal precursor for 24 hours, and filtering to remove the redundant metal precursor solution. The template material sheet impregnated with the metal precursor is placed in a vacuum drying oven at 80 ℃ to remove the solvent. Finally, removing the template material by 600 ℃ temperature programming roasting to obtain the mesoporous transition metal oxide material.
The transition metal oxide obtained by the method has a porous structure, and the radius of pores of the transition metal oxide is distributed between 0nm and 30 nm.
Example 5
Firstly, preparing a template material, and preparing polymer nano particles through emulsion polymerization to be used as the template material. 2.56g of cerium nitrate and 1.27g of zirconium nitrate were weighed and dissolved in 5mL of ethanol, respectively. And then mixing the cerium nitrate and the zirconium nitrate ethanol solution, and stirring for 2 hours at the rotating speed of 700 r/min by adopting magnetic stirring to obtain the metal precursor ethanol solution. Mixing the template material dispersion liquid with an ethanol solution of a metal precursor, wherein the addition amount of the template material dispersion liquid is 2-5 g. The mixed solution was put into a vacuum oven at 80 ℃ to remove the solvent. Finally, removing the template material by 600 ℃ temperature programming roasting to obtain the mesoporous transition metal oxide material.
The transition metal oxide obtained by the method has a porous structure, and the radius of pores of the transition metal oxide is distributed between 0nm and 100 nm.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.
Claims (6)
1. The preparation method of the mesoporous metal oxide catalytic material is characterized by comprising the following steps:
(1) preparing a template material with good stability;
(2) mixing a precursor solution of a metal oxide with a template material;
(3) drying to remove the solvent, and roasting to remove the template material to obtain the mesoporous metal oxide material.
2. The metal oxide according to claim 1, wherein the metal oxide is selected from any one of the following materials:
(i) yttrium oxide, titanium oxide, cerium oxide, lanthanum oxide, zirconium oxide, aluminum oxide, iron oxide, manganese oxide, vanadium oxide, chromium oxide, zinc oxide, copper oxide, magnesium oxide;
(ii) (ii) a derivative or solid solution of the oxide in (i).
3. The method of preparing mesoporous metal oxide according to claim 1, wherein the template material in step (1) is any one or a mixture of the following materials: furfural resin particles, phenol resin particles, polyaniline particles, polystyrene particles, polyacrylonitrile particles, melamine resin particles, polyacrylate resin particles, polyurethane particles, starch particles, carbon particles, and the like.
4. The template material of claim 3, having a diameter of less than 150 nm.
5. The method of preparing mesoporous metal oxide according to claim 1, wherein the step (2) of mixing the metal oxide precursor solution with the template material is dipping, casting, spraying or blending.
6. The mesoporous metal oxide material prepared by the process of claim 1, wherein the pore size distribution of the mesoporous metal oxide material is concentrated in the range of 0 to 100 nm.
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| CN202010962190.0A CN114177901A (en) | 2020-09-14 | 2020-09-14 | Preparation method of mesoporous metal oxide catalytic material |
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| CN202010962190.0A CN114177901A (en) | 2020-09-14 | 2020-09-14 | Preparation method of mesoporous metal oxide catalytic material |
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