CN113499784A - Formula material of porous alumina and preparation method thereof - Google Patents
Formula material of porous alumina and preparation method thereof Download PDFInfo
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- CN113499784A CN113499784A CN202110895262.9A CN202110895262A CN113499784A CN 113499784 A CN113499784 A CN 113499784A CN 202110895262 A CN202110895262 A CN 202110895262A CN 113499784 A CN113499784 A CN 113499784A
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title claims abstract description 52
- 239000000463 material Substances 0.000 title claims abstract description 40
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000000843 powder Substances 0.000 claims abstract description 51
- 239000000243 solution Substances 0.000 claims abstract description 37
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 22
- 239000002270 dispersing agent Substances 0.000 claims abstract description 21
- 239000007800 oxidant agent Substances 0.000 claims abstract description 21
- 239000005995 Aluminium silicate Substances 0.000 claims abstract description 18
- 229910000616 Ferromanganese Inorganic materials 0.000 claims abstract description 18
- 239000003929 acidic solution Substances 0.000 claims abstract description 18
- 235000012211 aluminium silicate Nutrition 0.000 claims abstract description 18
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 18
- 239000012153 distilled water Substances 0.000 claims abstract description 18
- 239000011521 glass Substances 0.000 claims abstract description 18
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 claims abstract description 18
- JMMWKPVZQRWMSS-UHFFFAOYSA-N isopropanol acetate Natural products CC(C)OC(C)=O JMMWKPVZQRWMSS-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229940011051 isopropyl acetate Drugs 0.000 claims abstract description 18
- GWYFCOCPABKNJV-UHFFFAOYSA-N isovaleric acid Chemical compound CC(C)CC(O)=O GWYFCOCPABKNJV-UHFFFAOYSA-N 0.000 claims abstract description 18
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000003607 modifier Substances 0.000 claims abstract description 18
- 239000002243 precursor Substances 0.000 claims abstract description 18
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 18
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 18
- 229910001388 sodium aluminate Inorganic materials 0.000 claims abstract description 18
- 238000011282 treatment Methods 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000001035 drying Methods 0.000 claims abstract description 17
- 230000001590 oxidative effect Effects 0.000 claims abstract description 15
- 239000007787 solid Substances 0.000 claims abstract description 15
- 230000032683 aging Effects 0.000 claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 238000001914 filtration Methods 0.000 claims abstract description 12
- 239000011259 mixed solution Substances 0.000 claims abstract description 12
- 238000002156 mixing Methods 0.000 claims abstract description 12
- 238000003756 stirring Methods 0.000 claims abstract description 12
- 238000005406 washing Methods 0.000 claims abstract description 7
- 238000001354 calcination Methods 0.000 claims abstract description 6
- 239000003755 preservative agent Substances 0.000 claims description 12
- 230000002335 preservative effect Effects 0.000 claims description 12
- 239000002994 raw material Substances 0.000 claims description 9
- -1 fatty acid ester Chemical class 0.000 claims description 8
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 6
- KFSLWBXXFJQRDL-UHFFFAOYSA-N Peracetic acid Chemical compound CC(=O)OO KFSLWBXXFJQRDL-UHFFFAOYSA-N 0.000 claims description 6
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 6
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 6
- 239000000194 fatty acid Substances 0.000 claims description 6
- 229930195729 fatty acid Natural products 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- JHWIEAWILPSRMU-UHFFFAOYSA-N 2-methyl-3-pyrimidin-4-ylpropanoic acid Chemical compound OC(=O)C(C)CC1=CC=NC=N1 JHWIEAWILPSRMU-UHFFFAOYSA-N 0.000 claims description 3
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 claims description 3
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 claims description 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 3
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 3
- 239000002202 Polyethylene glycol Substances 0.000 claims description 3
- 235000012538 ammonium bicarbonate Nutrition 0.000 claims description 3
- 239000001099 ammonium carbonate Substances 0.000 claims description 3
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 3
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 claims description 3
- 229940116318 copper carbonate Drugs 0.000 claims description 3
- GEZOTWYUIKXWOA-UHFFFAOYSA-L copper;carbonate Chemical compound [Cu+2].[O-]C([O-])=O GEZOTWYUIKXWOA-UHFFFAOYSA-L 0.000 claims description 3
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 3
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 claims description 3
- 229910017604 nitric acid Inorganic materials 0.000 claims description 3
- 229920001223 polyethylene glycol Polymers 0.000 claims description 3
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 3
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 3
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 3
- 239000012286 potassium permanganate Substances 0.000 claims description 3
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 239000012629 purifying agent Substances 0.000 abstract description 2
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 238000000746 purification Methods 0.000 description 4
- 230000003197 catalytic effect Effects 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000001179 sorption measurement 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
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/889—Manganese, technetium or rhenium
- B01J23/8892—Manganese
-
- 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
- B01D53/9445—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC]
- B01D53/945—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC] characterised by a specific catalyst
-
- 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
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/02—Boron or aluminium; Oxides or hydroxides thereof
- B01J21/04—Alumina
-
- 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
- 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)
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Combustion & Propulsion (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Catalysts (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The invention discloses a formula material of porous alumina and a preparation method thereof, wherein alumina powder, kaolin, high-carbon ferromanganese solid powder and organic glass powder are cleaned and then placed in a drying oven, and are dried at the temperature of 20 ℃; putting the materials into a reaction kettle, fully mixing isopropyl acetate, an acidic solution and a sodium aluminate solution in the reaction kettle, sequentially adding an appropriate amount of an oxidant, a pore-forming agent, a dispersing agent, a rare earth modifier and distilled water, and mixing at a high speed to obtain a mixed solution; sequentially carrying out standing treatment, aging treatment, multi-layer screen filtering and washing on the mixed solution to obtain a precursor solution; and then stirring the precursor solution at a high speed, and after stirring is finished, carrying out aging treatment, filtering, drying, calcining and crushing on the precursor solution to obtain the porous alumina material. The invention has low construction cost, low production cost, good porous dispersibility, excellent product performance and capability of greatly improving the stability and the high efficiency of the automobile exhaust absorption purifying agent.
Description
Technical Field
The invention relates to the technical field of inorganic catalytic materials, in particular to a formula material of porous alumina and a preparation method thereof.
Background
With the development of the automobile industry, automobile exhaust causes serious harm to human living environment, and is one of the main pollutants of global air pollution at present. At present, the main pollutants emitted by automobiles are harmful gases such as Hydrocarbon (HC), nitrogen oxide (NOx), carbon monoxide (CO) and Particulate Matter (PM). The catalytic purification of automobile exhaust is one of the effective means for controlling the emission of automobile exhaust at present.
Because the activated alumina has porosity, high specific surface area and good adsorbability, the activated alumina is the most widely used variety in the field of catalyst carriers and is also widely applied to catalytic purification of automobile exhaust. Therefore, the formula material of the porous alumina and the preparation method thereof are provided for further improving the using effect of the existing alumina and improving the tail gas purification rate.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a formula material of porous alumina and a preparation method thereof.
The technical scheme adopted by the invention for realizing the purpose is as follows: the formula material of porous alumina comprises alumina powder, kaolin, high-carbon ferromanganese, isopropyl acetate, organic glass powder, an acidic solution, a sodium aluminate solution, an oxidant, a pore-forming agent, a dispersant, a rare earth modifier, a preservative and distilled water, and is characterized by comprising the following raw materials in parts by weight:
45-90 parts of alumina powder;
12-27 parts of kaolin;
1.5-3.5 parts of high-carbon ferromanganese solid powder;
5-13 parts of organic glass powder;
8-16 parts of isopropyl acetate;
12-15 parts of an acidic solution;
10-15 parts of sodium aluminate solution;
2-4 parts of an oxidant;
3-5 parts of pore-forming agent;
2-3 parts of a dispersant;
1-2 parts of rare earth modifier;
1-2 parts of a preservative;
and a proper amount of distilled water.
The formula material of the porous alumina is characterized by comprising the following raw materials in parts by weight:
45 parts by weight of alumina powder;
12 parts of kaolin;
1.5 parts of high-carbon ferromanganese solid powder;
5 parts of organic glass powder;
8 parts of isopropyl acetate;
12 parts by weight of an acidic solution;
10 parts by weight of sodium aluminate solution;
2 parts by weight of an oxidizing agent;
3 parts of pore-forming agent;
2 parts of a dispersant;
1 part by weight of rare earth modifier;
1 part by weight of preservative;
proper amount of distilled water
The formula material of the porous alumina is characterized by comprising the following raw materials in parts by weight:
90 parts by weight of alumina powder;
27 parts of kaolin;
3.5 parts of high-carbon ferromanganese solid powder;
13 parts by weight of organic glass powder;
16 parts by weight of isopropyl acetate;
15 parts of an acidic solution;
15 parts of sodium aluminate solution;
4 parts by weight of an oxidizing agent;
5 parts of pore-forming agent;
3 parts of a dispersing agent;
2 parts of rare earth modifier;
2 parts of a preservative;
and a proper amount of distilled water.
The preparation method of the formula material of the porous alumina is characterized by comprising the following steps of:
step S1: cleaning and putting 45-90 parts by weight of alumina powder, 12-27 parts by weight of kaolin, 1.5-3.5 parts by weight of high-carbon ferromanganese solid powder and 5-13 parts by weight of organic glass powder in a drying box, and drying at the temperature of 10-20 ℃;
step S2: putting the materials into a reaction kettle, fully mixing 8-16 parts by weight of isopropyl acetate, 12-15 parts by weight of an acidic solution and 10-15 parts by weight of a sodium aluminate solution in the reaction kettle, sequentially adding 2-4 parts by weight of an oxidant, 3-5 parts by weight of a pore-forming agent, 2-3 parts by weight of a dispersant, 1-2 parts by weight of a rare earth modifier and a proper amount of distilled water, and then mixing at a high speed to obtain a mixed solution;
step S3: sequentially carrying out standing treatment, aging treatment, multi-layer screen filtering and washing on the mixed solution to obtain a precursor solution;
step S4: and then stirring the precursor solution at a high speed, and after stirring is finished, carrying out aging treatment, filtering, drying, calcining and crushing on the precursor solution to obtain the porous alumina material.
The preparation method of the formula material of the porous alumina is characterized by comprising the following steps: the oxidant is one of hydrogen peroxide, peroxyacetic acid, sodium dichromate, chromic acid, nitric acid, potassium permanganate and ammonium persulfate.
The preparation method of the formula material of the porous alumina is characterized by comprising the following steps: the pore-forming agent is one of ammonium bicarbonate and basic copper carbonate.
The preparation method of the formula material of the porous alumina is characterized by comprising the following steps: any one or more of sodium dodecyl benzene sulfonate, polyvinylpyrrolidone, polyethylene glycol fatty acid ester and polyoxyethylene fatty acid ester serving as the dispersing agent.
The invention has the beneficial effects that: the formula material of the porous alumina and the preparation method thereof have the advantages of low construction cost, low production cost, good porous dispersibility, excellent product performance and capability of greatly improving the stability and the high efficiency of the automobile exhaust adsorption and purification agent.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a formula material of porous alumina includes alumina powder, kaolin, high-carbon ferromanganese, isopropyl acetate, organic glass powder, an acidic solution, a sodium aluminate solution, an oxidant, a pore-forming agent, a dispersant, a rare earth modifier, a preservative, and distilled water, and is characterized by comprising the following raw materials in parts by weight:
45-90 parts of alumina powder;
12-27 parts of kaolin;
1.5-3.5 parts of high-carbon ferromanganese solid powder;
5-13 parts of organic glass powder;
8-16 parts of isopropyl acetate;
12-15 parts of an acidic solution;
10-15 parts of sodium aluminate solution;
2-4 parts of an oxidant;
3-5 parts of pore-forming agent;
2-3 parts of a dispersant;
1-2 parts of rare earth modifier;
1-2 parts of a preservative;
and a proper amount of distilled water.
Preferably, the formula material of the porous alumina comprises the following raw materials in parts by weight:
45 parts by weight of alumina powder;
12 parts of kaolin;
1.5 parts of high-carbon ferromanganese solid powder;
5 parts of organic glass powder;
8 parts of isopropyl acetate;
12 parts by weight of an acidic solution;
10 parts by weight of sodium aluminate solution;
2 parts by weight of an oxidizing agent;
3 parts of pore-forming agent;
2 parts of a dispersant;
1 part by weight of rare earth modifier;
1 part by weight of preservative;
proper amount of distilled water
Preferably, the formula material of the porous alumina comprises the following raw materials in parts by weight:
90 parts by weight of alumina powder;
27 parts of kaolin;
3.5 parts of high-carbon ferromanganese solid powder;
13 parts by weight of organic glass powder;
16 parts by weight of isopropyl acetate;
15 parts of an acidic solution;
15 parts of sodium aluminate solution;
4 parts by weight of an oxidizing agent;
5 parts of pore-forming agent;
3 parts of a dispersing agent;
2 parts of rare earth modifier;
2 parts of a preservative;
and a proper amount of distilled water.
The invention also provides a preparation method of the formula material of the porous alumina, which is characterized by comprising the following steps:
step S1: cleaning and putting 45-90 parts by weight of alumina powder, 12-27 parts by weight of kaolin, 1.5-3.5 parts by weight of high-carbon ferromanganese solid powder and 5-13 parts by weight of organic glass powder in a drying box, and drying at the temperature of 10-20 ℃;
step S2: putting the materials into a reaction kettle, fully mixing 8-16 parts by weight of isopropyl acetate, 12-15 parts by weight of an acidic solution and 10-15 parts by weight of a sodium aluminate solution in the reaction kettle, sequentially adding 2-4 parts by weight of an oxidant, 3-5 parts by weight of a pore-forming agent, 2-3 parts by weight of a dispersant, 1-2 parts by weight of a rare earth modifier and a proper amount of distilled water, and then mixing at a high speed to obtain a mixed solution;
step S3: sequentially carrying out standing treatment, aging treatment, multi-layer screen filtering and washing on the mixed solution to obtain a precursor solution;
step S4: and then stirring the precursor solution at a high speed, and after stirring is finished, carrying out aging treatment, filtering, drying, calcining and crushing on the precursor solution to obtain the porous alumina material.
In the invention:
further, the oxidant is one of hydrogen peroxide, peracetic acid, sodium dichromate, chromic acid, nitric acid, potassium permanganate and ammonium persulfate.
Further, the pore-forming agent is one of ammonium bicarbonate and basic copper carbonate.
Further, the dispersing agent is any one or more of sodium dodecyl benzene sulfonate, polyvinylpyrrolidone, polyethylene glycol fatty acid ester and fatty acid polyoxyethylene ester.
Specific example 1:
cleaning and washing 45 parts by weight of alumina powder, 12 parts by weight of kaolin, 1.5 parts by weight of high-carbon ferromanganese solid powder and 5 parts by weight of organic glass powder, placing the cleaned and washed materials in a drying box, and drying the materials at the temperature of 10 ℃; putting the materials into a reaction kettle, fully mixing 8 parts by weight of isopropyl acetate, 12 parts by weight of an acidic solution and 10 parts by weight of a sodium aluminate solution in the reaction kettle, sequentially adding 2 parts by weight of an oxidant, 3 parts by weight of a pore-forming agent, 2 parts by weight of a dispersant, 1 part by weight of a rare earth modifier and a proper amount of distilled water, and carrying out high-speed mixing to obtain a mixed solution; sequentially carrying out standing treatment, aging treatment, multi-layer screen filtering and washing on the mixed solution to obtain a precursor solution; and then stirring the precursor solution at a high speed, and after stirring is finished, carrying out aging treatment, filtering, drying, calcining and crushing on the precursor solution to obtain the porous alumina material.
Specific example 2:
cleaning 90 parts by weight of alumina powder, 27 parts by weight of kaolin, 3.5 parts by weight of high-carbon ferromanganese solid powder and 13 parts by weight of organic glass powder, putting the cleaned mixture into a drying box, and drying at the temperature of 20 ℃; putting the materials into a reaction kettle, fully mixing 16 parts by weight of isopropyl acetate, 15 parts by weight of an acidic solution and 15 parts by weight of a sodium aluminate solution in the reaction kettle, sequentially adding 4 parts by weight of an oxidant, 5 parts by weight of a pore-forming agent, 3 parts by weight of a dispersant, 2 parts by weight of a rare earth modifier and a proper amount of distilled water, and carrying out high-speed mixing to obtain a mixed solution; sequentially carrying out standing treatment, aging treatment, multi-layer screen filtering and washing on the mixed solution to obtain a precursor solution; and then stirring the precursor solution at a high speed, and after stirring is finished, carrying out aging treatment, filtering, drying, calcining and crushing on the precursor solution to obtain the porous alumina material.
The invention has low construction cost, low production cost, good porous dispersibility, excellent product performance and capability of greatly improving the stability and the high efficiency of the automobile exhaust absorption purifying agent.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. The formula material of porous alumina comprises alumina powder, kaolin, high-carbon ferromanganese, isopropyl acetate, organic glass powder, an acidic solution, a sodium aluminate solution, an oxidant, a pore-forming agent, a dispersant, a rare earth modifier, a preservative and distilled water, and is characterized by comprising the following raw materials in parts by weight:
45-90 parts of alumina powder;
12-27 parts of kaolin;
1.5-3.5 parts of high-carbon ferromanganese solid powder;
5-13 parts of organic glass powder;
8-16 parts of isopropyl acetate;
12-15 parts of an acidic solution;
10-15 parts of sodium aluminate solution;
2-4 parts of an oxidant;
3-5 parts of pore-forming agent;
2-3 parts of a dispersant;
1-2 parts of rare earth modifier;
1-2 parts of a preservative;
and a proper amount of distilled water.
2. The formula material of porous alumina as claimed in claim 1, which is prepared from the following raw materials in parts by weight:
45 parts by weight of alumina powder;
12 parts of kaolin;
1.5 parts of high-carbon ferromanganese solid powder;
5 parts of organic glass powder;
8 parts of isopropyl acetate;
12 parts by weight of an acidic solution;
10 parts by weight of sodium aluminate solution;
2 parts by weight of an oxidizing agent;
3 parts of pore-forming agent;
2 parts of a dispersant;
1 part by weight of rare earth modifier;
1 part by weight of preservative;
and a proper amount of distilled water.
3. The formula material of porous alumina as claimed in claim 1, which is prepared from the following raw materials in parts by weight:
90 parts by weight of alumina powder;
27 parts of kaolin;
3.5 parts of high-carbon ferromanganese solid powder;
13 parts by weight of organic glass powder;
16 parts by weight of isopropyl acetate;
15 parts of an acidic solution;
15 parts of sodium aluminate solution;
4 parts by weight of an oxidizing agent;
5 parts of pore-forming agent;
3 parts of a dispersing agent;
2 parts of rare earth modifier;
2 parts of a preservative;
and a proper amount of distilled water.
4. The method for preparing the formula material of porous alumina as claimed in claim 1, characterized by comprising the following steps:
step S1: cleaning and putting 45-90 parts by weight of alumina powder, 12-27 parts by weight of kaolin, 1.5-3.5 parts by weight of high-carbon ferromanganese solid powder and 5-13 parts by weight of organic glass powder in a drying box, and drying at the temperature of 10-20 ℃;
step S2: putting the materials into a reaction kettle, fully mixing 8-16 parts by weight of isopropyl acetate, 12-15 parts by weight of an acidic solution and 10-15 parts by weight of a sodium aluminate solution in the reaction kettle, sequentially adding 2-4 parts by weight of an oxidant, 3-5 parts by weight of a pore-forming agent, 2-3 parts by weight of a dispersant, 1-2 parts by weight of a rare earth modifier and a proper amount of distilled water, and then mixing at a high speed to obtain a mixed solution;
step S3: sequentially carrying out standing treatment, aging treatment, multi-layer screen filtering and washing on the mixed solution to obtain a precursor solution;
step S4: and then stirring the precursor solution at a high speed, and after stirring is finished, carrying out aging treatment, filtering, drying, calcining and crushing on the precursor solution to obtain the porous alumina material.
5. The preparation method of the formula material of porous alumina as claimed in claim 1, wherein the preparation method comprises the following steps: the oxidant is one of hydrogen peroxide, peroxyacetic acid, sodium dichromate, chromic acid, nitric acid, potassium permanganate and ammonium persulfate.
6. The preparation method of the formula material of porous alumina as claimed in claim 1, wherein the preparation method comprises the following steps: the pore-forming agent is one of ammonium bicarbonate and basic copper carbonate.
7. The preparation method of the formula material of porous alumina as claimed in claim 1, wherein the preparation method comprises the following steps: any one or more of sodium dodecyl benzene sulfonate, polyvinylpyrrolidone, polyethylene glycol fatty acid ester and polyoxyethylene fatty acid ester serving as the dispersing agent.
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