CN110282643A - A kind of modified oxidized aluminum material and its preparation method and application - Google Patents
A kind of modified oxidized aluminum material and its preparation method and application Download PDFInfo
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- CN110282643A CN110282643A CN201910631862.7A CN201910631862A CN110282643A CN 110282643 A CN110282643 A CN 110282643A CN 201910631862 A CN201910631862 A CN 201910631862A CN 110282643 A CN110282643 A CN 110282643A
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 50
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 239000000463 material Substances 0.000 title claims abstract description 49
- 238000002360 preparation method Methods 0.000 title claims abstract description 37
- 239000000243 solution Substances 0.000 claims abstract description 136
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 91
- -1 rare earth nitrate Chemical class 0.000 claims abstract description 61
- 229910002651 NO3 Inorganic materials 0.000 claims abstract description 55
- 239000007788 liquid Substances 0.000 claims abstract description 40
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 claims abstract description 38
- 229910001388 sodium aluminate Inorganic materials 0.000 claims abstract description 38
- 239000002270 dispersing agent Substances 0.000 claims abstract description 31
- 230000032683 aging Effects 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000006185 dispersion Substances 0.000 claims abstract description 21
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000001556 precipitation Methods 0.000 claims abstract description 15
- 230000008569 process Effects 0.000 claims abstract description 15
- 239000007921 spray Substances 0.000 claims abstract description 12
- 239000007787 solid Substances 0.000 claims abstract description 11
- 229910001868 water Inorganic materials 0.000 claims abstract description 11
- 238000001354 calcination Methods 0.000 claims abstract description 10
- 238000001914 filtration Methods 0.000 claims abstract description 10
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 9
- 239000006104 solid solution Substances 0.000 claims abstract description 6
- 238000005507 spraying Methods 0.000 claims abstract description 6
- 238000001035 drying Methods 0.000 claims abstract description 5
- 239000002243 precursor Substances 0.000 claims abstract description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 42
- 150000002910 rare earth metals Chemical class 0.000 claims description 28
- 239000003054 catalyst Substances 0.000 claims description 21
- 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 claims description 16
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 12
- 229910017604 nitric acid Inorganic materials 0.000 claims description 12
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 11
- 239000000908 ammonium hydroxide Substances 0.000 claims description 11
- 238000003756 stirring Methods 0.000 claims description 11
- IWOUKMZUPDVPGQ-UHFFFAOYSA-N barium nitrate Chemical compound [Ba+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O IWOUKMZUPDVPGQ-UHFFFAOYSA-N 0.000 claims description 10
- 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 claims description 9
- 239000002904 solvent Substances 0.000 claims description 9
- 239000002253 acid Substances 0.000 claims description 8
- FYDKNKUEBJQCCN-UHFFFAOYSA-N lanthanum(3+);trinitrate Chemical compound [La+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O FYDKNKUEBJQCCN-UHFFFAOYSA-N 0.000 claims description 6
- CFYGEIAZMVFFDE-UHFFFAOYSA-N neodymium(3+);trinitrate Chemical compound [Nd+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O CFYGEIAZMVFFDE-UHFFFAOYSA-N 0.000 claims description 6
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 6
- YWECOPREQNXXBZ-UHFFFAOYSA-N praseodymium(3+);trinitrate Chemical compound [Pr+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O YWECOPREQNXXBZ-UHFFFAOYSA-N 0.000 claims description 6
- QXPQVUQBEBHHQP-UHFFFAOYSA-N 5,6,7,8-tetrahydro-[1]benzothiolo[2,3-d]pyrimidin-4-amine Chemical compound C1CCCC2=C1SC1=C2C(N)=NC=N1 QXPQVUQBEBHHQP-UHFFFAOYSA-N 0.000 claims description 5
- 235000010482 polyoxyethylene sorbitan monooleate Nutrition 0.000 claims description 5
- 229920000053 polysorbate 80 Polymers 0.000 claims description 5
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 5
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 5
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 5
- 239000012266 salt solution Substances 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 4
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 3
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 3
- 150000002148 esters Chemical class 0.000 claims 2
- 229910052777 Praseodymium Inorganic materials 0.000 claims 1
- 125000001931 aliphatic group Chemical group 0.000 claims 1
- 235000014113 dietary fatty acids Nutrition 0.000 claims 1
- 239000000194 fatty acid Substances 0.000 claims 1
- 229930195729 fatty acid Natural products 0.000 claims 1
- 150000004665 fatty acids Chemical class 0.000 claims 1
- PUDIUYLPXJFUGB-UHFFFAOYSA-N praseodymium atom Chemical compound [Pr] PUDIUYLPXJFUGB-UHFFFAOYSA-N 0.000 claims 1
- 238000005406 washing Methods 0.000 abstract description 18
- 239000012153 distilled water Substances 0.000 description 14
- 239000000706 filtrate Substances 0.000 description 11
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 10
- 239000000047 product Substances 0.000 description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 230000008859 change Effects 0.000 description 6
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 230000003197 catalytic effect Effects 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 229910003158 γ-Al2O3 Inorganic materials 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 3
- 238000003837 high-temperature calcination Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- KAESVJOAVNADME-UHFFFAOYSA-N Pyrrole Chemical compound C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 238000013019 agitation Methods 0.000 description 2
- 229960004424 carbon dioxide Drugs 0.000 description 2
- 150000007942 carboxylates Chemical class 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920000136 polysorbate Polymers 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000009938 salting Methods 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
-
- 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
- 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
- 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
- B01J35/61—Surface area
- B01J35/615—100-500 m2/g
-
- 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
- B01J35/63—Pore volume
- B01J35/635—0.5-1.0 ml/g
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/021—After-treatment of oxides or hydroxides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/04—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
- C01F7/14—Aluminium oxide or hydroxide from alkali metal aluminates
-
- 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
- B01J2523/00—Constitutive chemical elements of heterogeneous catalysts
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Catalysts (AREA)
Abstract
The embodiment of the invention discloses a kind of modified oxidized aluminum materials and its preparation method and application, this method comprises: sodium aluminate solution and rare earth nitrate solution spray are obtained mixed liquor into dispersant solution；Mixed liquor is subjected to precipitation process, aging process, is filtered, washed, presoma is obtained；Rare earth nitrate solution and ammonia spray into dispersion liquid and are carried out precipitation process, aging process, are filtered, washed, solid is obtained；Presoma and solid are dissolved in hot water respectively, and solid solution spraying into precursor solution and is stirred, end to be mixed carries out aging process, filtering, drying, washing, calcining, crushing, obtains modified oxidized aluminum material；The modified oxidized aluminum material that this method is prepared has excellent thermal stability, specific surface area and Kong Rong.
Description
Technical field
The present embodiments relate to chemical material technical fields, and in particular to a kind of modified oxidized aluminum material and its preparation side
Method and application.
Background technique
With the continuous development of society and it is economical be constantly progressive, automobile is increasingly becoming people and goes on a journey essential friendship
Logical tool.Chinese family and car ownership per capita are increasing, and with the increase of car ownership, largely it is discharged into
Tail gas in air can then bring more serious environmental problem, destroy the weather and environment in city, such as a large amount of hazes and acid
The formation etc. of rain, and vehicle exhaust also can directly or indirectly cause damages to the harm of atmospheric environment to the health of human body.
Three-way emission control technology is that a kind of ceramic honeycomb for being filled with powder catalyst is mounted under engine
The technology that trip is purified to the tail gas generated to engine.After gasoline by burning within the engine, one can be mainly generated
The pollutants such as carbonoxide, nitrogen oxides, hydrocarbon and particle, tail gas pass through TWC Three Way Catalyst System, an oxidation therein
Carbon, hydrocarbon, nitrogen oxides will receive the catalysis of catalyst to react generation water, and carbon dioxide and nitrogen etc. are harmless
Substance, wherein the performance of powder catalyst determines the detergent power of TWC Three Way Catalyst System.
Catalyst mainly includes noble metal catalyst, catalyst aid, stabilizer and γ-Al2O3Coating material, wherein γ-
Al2O3Biggish surface area is provided for three-way catalyst, is that catalyst comes into full contact with tail gas, to guarantee catalytic efficiency；But
γ-Al2O3When temperature transient reaches 800 DEG C, structure is changed into α-Al2O3, under specific surface area, Kong Rong, oxygen storage capacity
Drop, so that catalytic efficiency be made to decline, since ternary catalyzing unit is closely located to automobile engine, operating temperature be can reach
1000 DEG C or more, therefore common aluminium oxide can not be as the catalyst carrier in ternary catalyzing unit.
Summary of the invention
For this purpose, the first mesh of the embodiment of the present invention provides a kind of modified oxidized aluminum material, the modified oxidized aluminum material is in height
Under conditions of 800 DEG C, there is excellent specific surface area and Kong Rong, solve alumina material in the prior art and be higher than 800
DEG C when, specific surface area, Kong Rong, oxygen storage capacity decline the problem of.
The second mesh of the embodiment of the present invention provides a kind of preparation method of modified oxidized aluminum material, which uses and set
It is standby fairly simple, easily operated, and be modified using a variety of rare earth elements, and handled by high-temperature calcination, so that being prepared into
The modified oxidized aluminum material arrived has excellent thermal stability, specific surface area and Kong Rong.
The third purpose of the embodiment of the present invention provides a kind of modified oxidized aluminum material in auto-exhaust catalyst carrier
Using the application enables to catalyst carrier in the case where being higher than 800 DEG C, has excellent specific surface area, Kong Rong, storage oxygen
Can, the durability and catalytic efficiency of catalyst carrier can be effectively improved.
To achieve the goals above, the embodiment of the present invention provides the following technical solutions:
A kind of preparation method of modified oxidized aluminum material, the preparation side are provided according to a first aspect of the embodiments of the present invention
Method includes the following steps:
(a) sodium aluminate solution and rare earth nitrate solution spray are obtained into mixed liquor into dispersant solution；
(b) mixed liquor is subjected to precipitation process, aging process, be filtered, washed, obtain presoma；
(c) by rare earth nitrate solution and ammonia spray into dispersion liquid and carry out precipitation process, aging process, filtering,
Washing, obtains solid；
(d) presoma and solid are dissolved in hot water respectively, and by solid solution spraying into precursor solution simultaneously
It is stirred, end to be mixed carries out aging process, filtering, drying, calcining, crushing, obtains the modified oxidized aluminum material.
The above-mentioned preparation method of the present invention is fairly simple, easily operated using equipment, and is changed using a variety of rare earth elements
Property, and handled by high-temperature calcination, so that the modified oxidized aluminum material being prepared has excellent thermal stability, specific surface area
And Kong Rong.
Further, in the step (a), sodium aluminate solution and rare earth nitrate solution volume ratio are 1: (0.8-1.2)；
Sodium aluminate solution concentration is 50-150g/L；The quality of rare earth nitrades is in sodium aluminate solution with oxygen in rare earth nitrate solution
Change the 1-40% of aluminium meter aluminum amount, solvent is the nitric acid solution that mass fraction is 15-80% in rare earth nitrate solution；Rare earth nitre
Rare earth nitrades are in lanthanum nitrate, cerous nitrate, zirconium nitrate, praseodymium nitrate, neodymium nitrate, barium nitrate and dysprosium nitrate in acid salt solution
Any two is a variety of.By the restriction to sodium aluminate solution concentration, the partial size for preparing modified oxidized aluminum material can be ensured, and
By rare earth nitrades type and multiple choices, the overall performance of modified oxidized aluminum material can be improved.
Further, in the step (a), the total volume and dispersant solution of sodium aluminate solution and rare earth nitrate solution
Volume ratio be 15: (2-3)；Dispersing agent is selected from PEG-2000, neopelex, polyvinyl pyrrole in dispersant solution
Any one or more in alkanone, Tween 80, cithrol and polyoxyethylene carboxylate；In dispersant solution
The quality of dispersing agent is the 0.1-10% of the aluminum amount in terms of aluminium oxide in sodium aluminate solution.It, can be better by above-mentioned restriction
Improve the specific surface area and Kong Rong for preparing modified oxidized aluminum material.
Further, in the step (b), precipitation process is that under agitation, control mixeding liquid temperature is 40-90
DEG C, pH value 6.5-8.5；Aging process is the aging 1-100h at 65-95 DEG C.By above-mentioned processing, it can be improved preparation and change
High high-temp stability, specific surface area and the Kong Rong of property alumina material.
Further, in the step (c), the quality of rare earth nitrades is in sodium aluminate solution in rare earth nitrate solution
The 15-25% of aluminum amount in terms of aluminium oxide, solvent is the nitric acid solution that mass fraction is 15-80% in rare earth nitrate solution,
The mass concentration of rare earth nitrate solution is 250-350g/L, and rare earth nitrades are selected from lanthanum nitrate, nitre in rare earth nitrate solution
In sour cerium, zirconium nitrate, praseodymium nitrate, neodymium nitrate, barium nitrate and dysprosium nitrate any two or it is a variety of；Preferably, when rare earth nitric acid
When containing cerous nitrate in salting liquid, first cerous nitrate is dissolved in nitric acid solution, and add hydrogen peroxide in rare earth cerous nitrate solution
And stir and evenly mix, wherein the mass concentration of hydrogen peroxide is 30%, and hydrogen peroxide additive amount is the 15- of rare earth nitrate solution volume
18%；Mixing time is 25-35min；It will then match in other rare earth nitrades merging rare earth cerous nitrate solution again corresponding dense
The rare earth nitrate solution of degree.
Further, in the step (c), the volume ratio of rare earth nitrate solution, ammonium hydroxide and dispersion liquid is (5-7): (5-
7):(4-6)；The mass concentration of ammonium hydroxide is 45-55%；Solute in dispersion liquid be selected from PEG-2000, neopelex,
Any one or more in polyvinylpyrrolidone, Tween 80, cithrol and polyoxyethylene carboxylate；Point
The quality of solute in dispersion liquid is the 4-6% of the aluminum amount in terms of aluminium oxide in sodium aluminate solution.
Further, in the step (c), precipitation process is under agitation, to adjust pH value to 8.5-9.0；Aging
Processing is the aging 20-26h at 70-80 DEG C.
Further, in the step (d), whipping temp is 75-85 DEG C, mixing time 3-5h；Aging process be
Aging 20-28h at 70-80 DEG C；Drying temperature is 85-95 DEG C；Calcination temperature is 800-1000 DEG C, time 2-10h；Crushing is
It carries out being crushed to 25-35 μm using ball mill；Hot water temperature is 85-95 DEG C.The present invention can be improved preparation by calcination processing
The thermal stability of modified oxidized aluminum material.
Further, it in the step (b) and (c), washs to be washed using distilled water to filtrate, washing process
Middle addition ammonium hydroxide adjusts pH to 8.0-10.0；The solid-to-liquid ratio of distilled water and filtrate is (9-15): 1, wash temperature 60-95
DEG C, wash time 10-60min, washing times are 3-5 times.
The present invention can reduce the impurity prepared in product by carrying out washing treatment, and be able to carry out removing sodium, can further mention
Height prepares the activity of modified oxidized aluminum material.
There is provided him a kind of modified oxidized aluminum material according to a second aspect of the embodiments of the present invention, the modified oxidized aluminum material
It is prepared by above-mentioned preparation method.
The above-mentioned modified oxidized aluminum material of the present invention has excellent thermal stability, specific surface area, Kong Rong and storage oxygen
Energy.
The third aspect of the embodiment of the present invention provides the above-mentioned modified oxidized aluminum material of one kind in auto-exhaust catalyst carrier
Application.By can be improved the service life of catalyst carrier using above-mentioned modified oxidized aluminum material as catalyst carrier, and
Improve catalytic efficiency.
The embodiment of the present invention has the advantages that
(1) preparation method of the present invention is fairly simple, easily operated using equipment, and is changed using a variety of rare earth elements
Property, and handled by high-temperature calcination, it can be improved the comprehensive performance for preparing product.
(2) the modified oxidized aluminum material of the present invention has excellent thermal stability, specific surface area, Kong Rong and storage oxygen
Energy.
(3) present invention is by can be improved the use of catalyst carrier using modified oxidized aluminum material as catalyst carrier
Service life, and improve catalytic efficiency.
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book is understood other advantages and efficacy of the present invention easily, it is clear that described embodiment is the present invention one
Section Example, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
Embodiment 1
The present embodiment is a kind of preparation method of modified oxidized aluminum material, and the preparation method includes the following steps:
(a) it is 50g/L sodium aluminate solution and rare earth nitrate solution spray into dispersant solution by concentration, is mixed
Liquid, wherein the volume ratio of sodium aluminate solution and rare earth nitrate solution is 1: 0.8, sodium aluminate solution and rare earth nitrate solution
The volume ratio of total volume and dispersant solution is 15: 2, and the quality of rare earth nitrades is sodium aluminate solution in rare earth nitrate solution
In in terms of aluminium oxide aluminum amount 1%, solvent is the nitric acid solution that mass fraction is 15% in rare earth nitrate solution；Rare earth nitre
Rare earth nitrades are lanthanum nitrate and dysprosium nitrate in acid salt solution, and dispersing agent is polyvinylpyrrolidone and tween in dispersant solution
80；In dispersant solution the quality of dispersing agent be sodium aluminate solution in terms of aluminium oxide aluminum amount 0.1%；
(b) mixed liquor is subjected to precipitation process under 40 DEG C, pH6.5-8.5 and stirring condition, it is then old at 95 DEG C
Change 1h, filtering, then filtrate washed using distilled water, ammonium hydroxide is added in washing process and adjusts pH to 8.0, distilled water with
The solid-to-liquid ratio of filtrate is 9: 1, and wash temperature is 60 DEG C, wash time 60min, and washing times are 3 times, obtains presoma；
(c) rare earth nitrate solution for being 350g/L according to concentration, concentration are that the volume ratio of 45% ammonium hydroxide and dispersion liquid is 5
: 7: 4, rare earth nitrate solution and ammonia spray are carried out to place of settling into dispersion liquid and under pH8.5-9.0, stirring condition
Reason, then the aging 26h at 70 DEG C, is then filtered, then is washed using distilled water to filtrate, and ammonia is added in washing process
The solid-to-liquid ratio of water adjusting pH to 8.0, distilled water and filtrate is 9: 1, and wash temperature is 60 DEG C, wash time 60min, washing
Number is 3 times, obtains solid, and wherein the solute in dispersion liquid is polyvinylpyrrolidone and Tween 80；It is molten in dispersion liquid
The quality of matter be in sodium aluminate solution in terms of aluminium oxide aluminum amount 4%, the quality of rare earth nitrades in rare earth nitrate solution
For in sodium aluminate solution in terms of aluminium oxide aluminum amount 15%, solvent is the nitre that mass fraction is 15% in rare earth nitrate solution
Acid solution, rare earth nitrades are zirconium nitrate and praseodymium nitrate in rare earth nitrate solution；
(d) presoma and solid are dissolved in respectively in 95 DEG C of hot water, and solid solution spraying is molten to presoma
3h is stirred in liquid and at 75 DEG C, then end aging 20h at 80 DEG C to be mixed is filtered, and dry at 85 DEG C, then
In 800 DEG C of calcining 10h, carries out being crushed to 25-35 μm using ball mill, obtain modified oxidized aluminum material.
Embodiment 2
The present embodiment is a kind of preparation method of modified oxidized aluminum material, and the preparation method includes the following steps:
(a) it is 150g/L sodium aluminate solution and rare earth nitrate solution spray into dispersant solution by concentration, is mixed
Close liquid, wherein sodium aluminate solution and rare earth nitrate solution according to volume ratio be 1: 1.2, sodium aluminate solution and rare earth nitrades
The total volume of solution and the volume ratio of dispersant solution are 5: 1, and the quality of rare earth nitrades is aluminic acid in rare earth nitrate solution
In sodium solution in terms of aluminium oxide aluminum amount 40%, solvent is that the nitric acid that mass fraction is 80% is molten in rare earth nitrate solution
Liquid；Rare earth nitrades are selected from lanthanum nitrate, cerous nitrate and zirconium nitrate in rare earth nitrate solution, and dispersing agent is in dispersant solution
PEG-2000 and neopelex；In dispersant solution the quality of dispersing agent be sodium aluminate solution in terms of aluminium oxide aluminium
The 10% of quality；
(b) mixed liquor is subjected to precipitation process under 90 DEG C, pH6.5-8.5 and stirring condition, it is then old at 65 DEG C
Change 100h, filtering, then filtrate is washed using distilled water, ammonium hydroxide is added in washing process and adjusts pH to 10, distilled water
Solid-to-liquid ratio with filtrate is 15: 1, and wash temperature is 95 DEG C, wash time 10min, and washing times are 5 times, obtains forerunner
Body；
(c) rare earth nitrate solution for being 250g/L according to concentration, concentration are that the volume ratio of 55% ammonium hydroxide and dispersion liquid is 7
: 5: 6, rare earth nitrate solution and ammonia spray are carried out to place of settling into dispersion liquid and under pH8.5-9.0, stirring condition
Reason, then the aging 20h at 80 DEG C, is then filtered, then is washed using distilled water to filtrate, and ammonia is added in washing process
The solid-to-liquid ratio of water adjusting pH to 10, distilled water and filtering is 15: 1, and wash temperature is 95 DEG C, wash time 10min, washing time
Number is 5 times, obtains solid, and wherein the solute in dispersion liquid is PEG-2000 and neopelex；In dispersion liquid
The quality of solute be in sodium aluminate solution in terms of aluminium oxide aluminum amount 6%, the matter of rare earth nitrades in rare earth nitrate solution
Amount be in sodium aluminate solution in terms of aluminium oxide aluminum amount 25%, it is 80% that solvent, which is mass fraction, in rare earth nitrate solution
Nitric acid solution, rare earth nitrades are neodymium nitrate and barium nitrate in rare earth nitrate solution；
(d) presoma and solid are dissolved in respectively in 85 DEG C of hot water, and solid solution spraying is molten to presoma
5h is stirred in liquid and at 85 DEG C, then end aging 28h at 70 DEG C to be mixed is filtered, and dry at 95 DEG C, then
In 1000 DEG C of calcining 2h, carries out being crushed to 25-35 μm using ball mill, obtain modified oxidized aluminum material.
Embodiment 3
The present embodiment is a kind of preparation method of modified oxidized aluminum material, and the preparation method includes the following steps:
(a) it is 100g/L sodium aluminate solution and rare earth nitrate solution spray into dispersant solution by concentration, is mixed
Close liquid, wherein sodium aluminate solution and rare earth nitrate solution according to volume ratio be 1: 1, sodium aluminate solution and rare earth nitrades are molten
The total volume of liquid and the volume ratio of dispersant solution are 6: 1, and the quality of rare earth nitrades is sodium aluminate in rare earth nitrate solution
In solution in terms of aluminium oxide aluminum amount 3%, solvent is the nitric acid solution that mass fraction is 65% in rare earth nitrate solution；It is dilute
Rare earth nitrades are praseodymium nitrate and neodymium nitrate in native nitrate solution, and dispersing agent is PEG-2000 solution in dispersant solution；Point
In dispersant solution the quality of dispersing agent be sodium aluminate solution in terms of aluminium oxide aluminum amount 5%；
(b) mixed liquor is subjected to precipitation process under 80 DEG C, pH7.0-7.5 and stirring condition, it is then old at 90 DEG C
Change 40h, filtering, then filtrate washed using distilled water, ammonium hydroxide is added in washing process and adjusts pH to 9, distilled water with
The solid-to-liquid ratio of filtering is 12: 1, and wash temperature is 75 DEG C, wash time 40min, and washing times are 4 times, obtains presoma；
(c) cerous nitrate is dissolved in the nitric acid solution that concentration is 65%, and addition quality is dense in rare earth cerous nitrate solution
Degree is 30% hydrogen peroxide and stirs 30min mixing, and zirconium nitrate, which is then placed in the concentration matched in rare earth cerous nitrate solution, again is
The rare earth nitrate solution of 300g/L, the quality of rare earth nitrades is in sodium aluminate solution with aluminium oxide in rare earth nitrate solution
The 18% of aluminum amount is counted, and cerous nitrate and zirconium nitrate mass ratio are 5: 4；Hydrogen peroxide additive amount is rare earth nitrate solution volume
17%；Then, the volume ratio of the ammonium hydroxide and dispersion liquid that are 50% according to rare earth nitrate solution, concentration is 6: 6: 5, by rare earth nitre
Acid salt solution and ammonia spray carry out precipitation process into dispersion liquid and under pH8.5-9.0, stirring condition, then at 75 DEG C
Aging for 24 hours, is then filtered, then is washed using distilled water to filtrate, and ammonium hydroxide is added in washing process and adjusts pH to 9, steams
Distilled water and the solid-to-liquid ratio of filtering are 12: 1, and wash temperature is 75 DEG C, wash time 40min, and washing times are 4 times, consolidate
State object；Solute in dispersion liquid is PEG-2000；The quality of solute in dispersion liquid be sodium aluminate solution in terms of aluminium oxide aluminium
The 5% of quality；
(d) presoma and solid are dissolved in respectively in 90 DEG C of hot water, and solid solution spraying is molten to presoma
4h is stirred in liquid and at 80 DEG C, end aging at 75 DEG C to be mixed for 24 hours, is then filtered, and is dried at 90 DEG C, then
In 900 DEG C of calcining 6h, carries out being crushed to 25-35 μm using ball mill, obtain modified oxidized aluminum material.
Reference examples 1
This reference examples is a kind of preparation method of modified oxidized aluminum material, the preparation side in the preparation method and embodiment 3
Method is essentially identical, and difference is only that in step (a) that rare earth nitrate solution is praseodymium nitrate solution；Rare earth nitrades in step (c)
Solution is cerous nitrate aqueous solution.
Reference examples 2
This reference examples is a kind of preparation method of modified oxidized aluminum material, the preparation side in the preparation method and embodiment 3
Method is essentially identical, does not control pH value during the precipitation process that difference is only that in step (b) and step (c).
Reference examples 3
This reference examples is a kind of preparation method of modified oxidized aluminum material, the preparation side in the preparation method and embodiment 3
Method is essentially identical, and difference, which is only that in step (b) and step (c), does not carry out carrying out washing treatment.
Reference examples 4
This reference examples is the γ-Al used in existing TWC Three Way Catalyst System2O3Coating material, the coating material are Sasol factory
Family produce product number be PURALOX SCFa-140L3 coating material.
Experimental example 1
Choose the modified oxidized aluminum material being prepared in above-described embodiment 1-3 and reference examples 1-4；
Nitrogen adsorption method and transmission electron microscope method is respectively adopted to the surface after the fresh state of above-mentioned each material and 900 DEG C of calcining 4h
Product, Kong Rong, γ-Al2O3Content detected, testing result is as shown in table 1:
Table 1
As shown in Table 1:
The composite modified aluminium oxide of the rare earth that the embodiment of the present invention is prepared has excellent thermal stability, can be 900
At DEG C, so that product has excellent specific surface area, Kong Rong and higher γ-Al2O3Content；However change this Shen in reference examples
Please preparation method and its raw material, result in the reduction for preparing product performance at high temperature, influence properties of product；By with reference examples
4 compare, and the product that the embodiment of the present invention is prepared has reached and product number is the coating of PURALOX SCFa-140L3
The comparable performance of material.
Although above having used general explanation and specific embodiment, the present invention is described in detail, at this
On the basis of invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Therefore,
These modifications or improvements without departing from theon the basis of the spirit of the present invention are fallen within the scope of the claimed invention.
Claims (10)
1. a kind of preparation method of modified oxidized aluminum material, which comprises the steps of:
(a) sodium aluminate solution and rare earth nitrate solution spray are obtained into mixed liquor into dispersant solution；
(b) mixed liquor is subjected to precipitation process, aging process, be filtered, washed, obtain presoma；
(c) rare earth nitrate solution and ammonia spray into dispersion liquid and are carried out precipitation process, aging process, are filtered, washed,
Obtain solid；
(d) presoma and solid are dissolved in hot water respectively, and solid solution spraying into precursor solution and is carried out
Stirring, end to be mixed carry out aging process, filtering, drying, calcining, crushing, obtain the modified oxidized aluminum material.
2. preparation method according to claim 1, which is characterized in that in the step (a), sodium aluminate solution and rare earth nitre
Acid salt solution volume ratio is 1: (0.8-1.2)；Sodium aluminate solution concentration is 50-150g/L；Rare earth nitre in rare earth nitrate solution
The quality of hydrochlorate is the 1-40% of the aluminum amount in terms of aluminium oxide in sodium aluminate solution, and solvent is quality point in rare earth nitrate solution
Number is the nitric acid solution of 15-80%；Rare earth nitrades are selected from lanthanum nitrate, cerous nitrate, zirconium nitrate, nitric acid in rare earth nitrate solution
In praseodymium, neodymium nitrate, barium nitrate and dysprosium nitrate any two or it is a variety of.
3. preparation method according to claim 1, which is characterized in that in the step (a), sodium aluminate solution and rare earth nitre
The total volume of acid salt solution and the volume ratio of dispersant solution are 15: (2-3)；Dispersing agent is selected from PEG- in dispersant solution
2000, neopelex, polyvinylpyrrolidone, Tween 80, cithrol and aliphatic acid polyethenoxy
Any one or more in ester；In dispersant solution the quality of dispersing agent be sodium aluminate solution in terms of aluminium oxide aluminum amount
0.1-10%.
4. preparation method according to claim 1, which is characterized in that in the step (b), precipitation process is in stirring bar
Under part, control mixeding liquid temperature is 40-90 DEG C, pH value 6.5-8.5；Aging process is the aging 1-100h at 65-95 DEG C.
5. preparation method according to claim 1, which is characterized in that dilute in rare earth nitrate solution in the step (c)
The quality of native nitrate is the 15-25% of the aluminum amount in terms of aluminium oxide in sodium aluminate solution, and solvent is in rare earth nitrate solution
Mass fraction is the nitric acid solution of 15-80%, and the mass concentration of rare earth nitrate solution is 250-350g/L, and rare earth nitrades are molten
In liquid rare earth nitrades in lanthanum nitrate, cerous nitrate, zirconium nitrate, praseodymium nitrate, neodymium nitrate, barium nitrate and dysprosium nitrate any two
Kind is a variety of.
6. preparation method according to claim 1, which is characterized in that in the step (c), rare earth nitrate solution, ammonia
The volume ratio of water and dispersion liquid is (5-7): (5-7): (4-6)；The mass concentration of ammonium hydroxide is 45-55%；Solute in dispersion liquid
Selected from PEG-2000, neopelex, polyvinylpyrrolidone, Tween 80, cithrol and fatty acid
Any one or more in polyoxyethylene ester；The quality of solute in dispersion liquid be sodium aluminate solution in terms of aluminium oxide aluminum
The 4-6% of amount.
7. preparation method according to claim 1, which is characterized in that in the step (c), precipitation process is in stirring bar
Under part, pH value is adjusted to 8.5-9.0；Aging process is the aging 20-26h at 70-80 DEG C.
8. preparation method according to claim 1, which is characterized in that in the step (d), whipping temp is 75-85 DEG C,
Mixing time is 3-5h；Aging process is the aging 20-28h at 70-80 DEG C；Drying temperature is 85-95 DEG C；Calcination temperature is
800-1000 DEG C, time 2-10h；It crushes to carry out being crushed to 25-35 μm using ball mill.
9. a kind of modified oxidized aluminum material, which is characterized in that be prepared by any preparation method of claim 1-8.
10. application of the modified oxidized aluminum material as claimed in claim 9 in auto-exhaust catalyst carrier.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113337107A (en) * | 2021-05-29 | 2021-09-03 | 巢湖市龙鑫塑料有限公司 | Method for composite modification of nylon 6 by nano-alumina |
| CN115228434A (en) * | 2022-07-21 | 2022-10-25 | 南京信息工程大学 | Surface-wrapped gamma-Al 2 O 3 : carbon nanotube adsorbent with Dy & lt 3+ & gt particles and preparation method thereof |
| CN116332224A (en) * | 2023-03-22 | 2023-06-27 | 广东长信精密设备有限公司 | Spherical gallium oxide and preparation process thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090023581A1 (en) * | 2004-12-30 | 2009-01-22 | Magnesium Elektron Limited | THERMALLY STABLE DOPED AND UNDOPED POROUS ALUMINUM OXIDES AND NANOCOMPOSITE CeO2-ZrO2 AND Al2O3 CONTAINING MIXED OXIDES |
| CN103619468A (en) * | 2011-07-01 | 2014-03-05 | 特莱巴赫工业有限公司 | Ceria zirconia alumina composition with enhanced thermal stability |
| CN106732523A (en) * | 2017-02-21 | 2017-05-31 | 云南冶金集团创能金属燃料电池股份有限公司 | Catalyst carrier and preparation method |
| CN106944031A (en) * | 2011-07-14 | 2017-07-14 | 特莱巴赫工业有限公司 | Cerium oxide zirconia alumina composition with enhanced heat endurance |
| CN109395712A (en) * | 2018-12-07 | 2019-03-01 | 昆明冶金研究院 | A kind of aluminum-based catalyst agent carrier and preparation method thereof |
| CN109513432A (en) * | 2018-12-07 | 2019-03-26 | 昆明冶金研究院 | A kind of catalyst carrier for purifying vehicle tail gas and preparation method thereof |
-
2019
- 2019-07-12 CN CN201910631862.7A patent/CN110282643A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090023581A1 (en) * | 2004-12-30 | 2009-01-22 | Magnesium Elektron Limited | THERMALLY STABLE DOPED AND UNDOPED POROUS ALUMINUM OXIDES AND NANOCOMPOSITE CeO2-ZrO2 AND Al2O3 CONTAINING MIXED OXIDES |
| CN103619468A (en) * | 2011-07-01 | 2014-03-05 | 特莱巴赫工业有限公司 | Ceria zirconia alumina composition with enhanced thermal stability |
| CN106944031A (en) * | 2011-07-14 | 2017-07-14 | 特莱巴赫工业有限公司 | Cerium oxide zirconia alumina composition with enhanced heat endurance |
| CN106732523A (en) * | 2017-02-21 | 2017-05-31 | 云南冶金集团创能金属燃料电池股份有限公司 | Catalyst carrier and preparation method |
| CN109395712A (en) * | 2018-12-07 | 2019-03-01 | 昆明冶金研究院 | A kind of aluminum-based catalyst agent carrier and preparation method thereof |
| CN109513432A (en) * | 2018-12-07 | 2019-03-26 | 昆明冶金研究院 | A kind of catalyst carrier for purifying vehicle tail gas and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113337107A (en) * | 2021-05-29 | 2021-09-03 | 巢湖市龙鑫塑料有限公司 | Method for composite modification of nylon 6 by nano-alumina |
| CN115228434A (en) * | 2022-07-21 | 2022-10-25 | 南京信息工程大学 | Surface-wrapped gamma-Al 2 O 3 : carbon nanotube adsorbent with Dy & lt 3+ & gt particles and preparation method thereof |
| CN115228434B (en) * | 2022-07-21 | 2023-09-01 | 南京信息工程大学 | gamma-Al coated on surface 2 O 3 : dy3+ particle carbon nanotube adsorbent and preparation method thereof |
| CN116332224A (en) * | 2023-03-22 | 2023-06-27 | 广东长信精密设备有限公司 | Spherical gallium oxide and preparation process thereof |
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