CN1150984C - Carrier loading platinum metal and preparation method of platinum based multielement metal catalyst organic collosol - Google Patents
Carrier loading platinum metal and preparation method of platinum based multielement metal catalyst organic collosolInfo
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- CN1150984C CN1150984C CNB021386587A CN02138658A CN1150984C CN 1150984 C CN1150984 C CN 1150984C CN B021386587 A CNB021386587 A CN B021386587A CN 02138658 A CN02138658 A CN 02138658A CN 1150984 C CN1150984 C CN 1150984C
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- platinum
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- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 title claims abstract description 137
- 229910052697 platinum Inorganic materials 0.000 title claims abstract description 62
- 239000003054 catalyst Substances 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title claims abstract description 25
- 229910052751 metal Inorganic materials 0.000 title abstract description 12
- 239000002184 metal Substances 0.000 title abstract description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 11
- 150000001875 compounds Chemical class 0.000 claims abstract description 10
- 239000002245 particle Substances 0.000 claims abstract description 10
- 239000002253 acid Chemical class 0.000 claims abstract description 7
- 239000002808 molecular sieve Substances 0.000 claims abstract description 7
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 6
- 229910052762 osmium Inorganic materials 0.000 claims abstract description 5
- 150000003839 salts Chemical class 0.000 claims abstract description 5
- 229910052741 iridium Inorganic materials 0.000 claims abstract description 3
- 229910052703 rhodium Inorganic materials 0.000 claims abstract description 3
- 229910052707 ruthenium Inorganic materials 0.000 claims abstract description 3
- 239000003863 metallic catalyst Substances 0.000 claims description 27
- 238000006243 chemical reaction Methods 0.000 claims description 15
- 239000000243 solution Substances 0.000 claims description 12
- 239000012018 catalyst precursor Substances 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 238000012805 post-processing Methods 0.000 claims description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 6
- 239000006229 carbon black Substances 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 229910000765 intermetallic Inorganic materials 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- 241000370738 Chlorion Species 0.000 claims description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 4
- 239000003960 organic solvent Substances 0.000 claims description 4
- 239000002904 solvent Substances 0.000 claims description 4
- 238000005303 weighing Methods 0.000 claims description 4
- 238000013019 agitation Methods 0.000 claims description 3
- 238000005554 pickling Methods 0.000 claims description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 2
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 abstract description 34
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract description 7
- -1 etc. Chemical compound 0.000 abstract description 5
- 230000003197 catalytic effect Effects 0.000 abstract description 4
- 239000000446 fuel Substances 0.000 abstract description 2
- 150000002739 metals Chemical class 0.000 abstract description 2
- 230000003647 oxidation Effects 0.000 abstract description 2
- 238000007254 oxidation reaction Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 229910021626 Tin(II) chloride Inorganic materials 0.000 abstract 1
- 150000001298 alcohols Chemical class 0.000 abstract 1
- 239000003513 alkali Substances 0.000 abstract 1
- 239000003738 black carbon Substances 0.000 abstract 1
- 239000000084 colloidal system Substances 0.000 abstract 1
- 150000002894 organic compounds Chemical class 0.000 abstract 1
- 235000011150 stannous chloride Nutrition 0.000 abstract 1
- AXZWODMDQAVCJE-UHFFFAOYSA-L tin(II) chloride (anhydrous) Chemical compound [Cl-].[Cl-].[Sn+2] AXZWODMDQAVCJE-UHFFFAOYSA-L 0.000 abstract 1
- 238000000034 method Methods 0.000 description 26
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 5
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 229910002849 PtRu Inorganic materials 0.000 description 2
- 229910002848 Pt–Ru Inorganic materials 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 239000010953 base metal Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910000510 noble metal Inorganic materials 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 238000001291 vacuum drying Methods 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 239000004280 Sodium formate Substances 0.000 description 1
- 238000005411 Van der Waals force Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001721 carbon Chemical group 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000002484 cyclic voltammetry Methods 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- CEYULKASIQJZGP-UHFFFAOYSA-L disodium;2-(carboxymethyl)-2-hydroxybutanedioate Chemical compound [Na+].[Na+].[O-]C(=O)CC(O)(C(=O)O)CC([O-])=O CEYULKASIQJZGP-UHFFFAOYSA-L 0.000 description 1
- 238000002848 electrochemical method Methods 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000009830 intercalation Methods 0.000 description 1
- 230000002687 intercalation Effects 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002905 metal composite material Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000006053 organic reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- HLBBKKJFGFRGMU-UHFFFAOYSA-M sodium formate Chemical compound [Na+].[O-]C=O HLBBKKJFGFRGMU-UHFFFAOYSA-M 0.000 description 1
- 235000019254 sodium formate Nutrition 0.000 description 1
- 238000010189 synthetic method Methods 0.000 description 1
- 238000004758 underpotential deposition Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
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- Catalysts (AREA)
Abstract
The present invention provides a simple preparation process of a platinum metal and platinum-based multi-element metal catalyst loaded by a supporter. The preparation process is typically characterized in that in an organic medium, such as organic compounds of alcohols comprising methanol, alcohol, etc., SnCl2 is used as a reducing agent to reduce the salt or acid compounds of platinum metal and platinum-based multi-element metal to obtain metal-sol; then, the supporter, such as active carbon, black carbon, molecular sieves, etc., is added to the sol and reacts with the sol under certain conditions to obtain colloid Pt and Pt+M (M=Ru, Ir, Rh, Os, etc.) metal catalyst loaded by the supporter; the metal catalyst is washed with alkali, with acid or with water, dried, and thermally treated under certain conditions to obtain the final powdered catalyst. The particle size of the metals in the obtained catalyst is from 1 to 5 nm. When used as a catalyst for the anodic oxidation and the cathode reduction of a proton exchanging film fuel battery, the catalyst has high catalytic activity and high stability.
Description
Technical field:
The present invention relates to a kind of preparation method of platinum metal catalyst, be specifically related to a kind of carrier loading platinum and platinum Quito unit metallic catalyst preparation method.
Background technology:
Platinum and platinum Quito unit metallic compound is a catalyst very commonly used, and the synthetic method of such catalyst mainly contains following several at present: 1. dipping-liquid phase reduction.After the soluble compound dissolving with Pt or other salt, mix, add various reducing agent (as: NaBH again with carrier
4, formalin, natrium citricum, sodium formate, hydrazine etc.), make metallic reducing and be adsorbed on the carrier, dry then, make carrier load platinum Base Metal catalyst.Most typical have with NaBH
4Make the Brown method of reducing agent and with hydrazine as Kaffer method of reducing agent etc.The advantage of this method is simple and feasible.Shortcoming is a bad dispersibility, and during multicomponent, each component problem pockety usually takes place carrier inside.2. electrochemical deposition method.Utilize electrochemical methods such as cyclic voltammetric, square wave scanning, constant potential, underpotential deposition with platinum or other metallic reducing.But how the control with the uniform appendix of metallic catalyst each component metals content on active carbon and in the codeposition process is a problem more rambunctious.3. gas phase reduction process.Metallic compound impregnated or be deposited on the carrier after, drying, the hydrogen high temperature reduction obtains carrier load platinum Base Metal catalyst.4. ion-exchange.All kinds fault of construction is in various degree contained on the carbon carrier surface, and the carbon atom of fault location can combine with functional groups such as carboxyl, phenolic group, and these surface groups can exchange with the ion in the solution.But the carrying capacity of metal is subjected to the restriction of carrier exchange capacity on the carbon carrier.5. platinum sol method.Metal is made colloidal sol be adsorbed on again on the active carbon, can obtain dispersiveness catalyst preferably.6. vapour deposition process.With after the metal gasification, load on the carrier under the high temperature.If adopt the low temperature vapor deposition method, must adopt volatile slaine.This method is not suitable for suitability for industrialized production.7. high-temperature alloy method.Make the multi-element metal alloying with high-temperature technology, thereby obtain high performance catalyst.8. other method.Also have some other method for preparing catalyst, as utilize the weak van der waals forces that exists between graphite linings and the layer, metal is inserted graphite layers, formation intercalation compound etc.But these methods are seldom research in actual applications.In the Preparation of catalysts process, it is found that homogeneous, decentralization are high more more when catalyst particle, its catalytic performance is good more, so the researcher makes in all sorts of ways and reaches this purpose.Organic sol method the most effectively at present, because sol system is that particle is in highly homogeneous state in the homogeneous system, thereby the catalyst that makes has favorable uniformity and decentralization.The method that most typical organic sol method prepares carrier loading platinum and platinum Quito unit metal composite catalyst is the Bonnemann method, and slaine and NR are adopted in experiment
4BEt
3The H preparation metal-sol that in organic media, reacts.But its process is very complicated, the condition harshness, and the cost of material height only is only applicable to laboratory research.
Summary of the invention:
The purpose of this invention is to provide a kind of method of utilizing simple organosol method to prepare carrier loading platinum and platinum Quito unit metallic catalyst, this method is simple possible extremely, and cost of material is low, is suitable for suitability for industrialized production.Simultaneously, this method can be passed through the control preparation condition, and obtains different-grain diameter (1～5nm) carrier loading platinum and platinum Quito unit metallic catalyst.
The technical scheme that realizes the foregoing invention purpose comprises: the preparation of catalyst precursor; Injection in carrier; And the post processing of catalyst.Concrete steps are as follows:
1, the preparation of catalyst precursor: take by weighing a certain amount of platinum or platinum Quito unit metallic compound, use the organic solvent wiring solution-forming, stir a certain proportion of SnCl of adding down
2Organic solution, reaction promptly made the organosol of slaine in 2～5 minutes.Can be described as component A.
2, the injection of carrier: under-25～65 ℃ of conditions, component A is added carrier, at N
2Protection is reaction down, gets B component.
3, post processing part: B component is 60-150 ℃ of drying under certain atmosphere, promptly makes carrier loading platinum and platinum Quito unit metallic catalyst.
Alleged " platinum and the platinum Quito unit metallic catalyst " of the present invention can be independent platinum metal catalyst; It also can be platinum Quito unit metallic catalyst; It can also be the mixture of platinum metal catalyst and platinum Quito unit metallic catalyst.Wherein " platinum Quito unit metallic catalyst " is meant: Pt+M (M=Ru, Ir, Rh, Os etc.) metallic catalyst.Carrier is meant: typical in active carbon, carbon black, molecular sieve etc.Organic media comprises: typical in alcohols organic compounds such as methyl alcohol, ethanol.Above step is further optimized and refinement, can draw following steps:
1, the preparation of catalyst precursor: take by weighing a certain amount of platinum or platinum Quito unit's metallic salt or acid compounds, be made into certain density solution with organic solvent.Add a certain proportion of SnCl while stirring (mechanical agitation or ultrasonic wave stir)
2Organic solution.Reacted 2～5 minutes and made the organosol of slaine.Get component A.
2, the injection of carrier: under ultrasonic wave or the mechanical agitation component A that obtains is added carrier (as active carbon, carbon black, molecular sieve etc.) under-25～65 ℃ of conditions, at N
2Protection by control controlling reaction temperature solvent evaporates speed, thereby obtains different particle size carrier loading platinums and platinum Quito unit metallic catalyst down, gets B component.In this step, by control controlling reaction temperature solvent evaporates speed, thereby obtain different particle size carrier loading platinums and platinum Quito unit metallic catalyst.Fig. 1 is the Pt/C catalyst XRD figure spectrum that obtains under the different preparation temperatures.(as Pt or Pt-Ru or Pt-Ru-Os or Pt-Ru-Os-Ir catalyst), wherein the ionic size of noble metal is 1～5nm.(Ar, H
2, N
2, O
2, air etc.).
3, post processing part: with of the NaOH or the sodium carbonate liquor washing of 2 B component that obtain, after removing unreacted reducing agent and product with small amount of thermal.Through pickling, wash repeatedly repeatedly again, and, in eluate, do not have chlorion, then (Ar, H under certain atmosphere with the liquor argenti nitratis ophthalmicus check
2, N
2, O
2, air etc.) 60-150 ℃ drying, promptly make carrier loading platinum and platinum Quito unit metallic catalyst (as Pt or Pt-Ru or Pt-Ru-Os or Pt-Ru-Os-Ir catalyst), wherein the ionic size of noble metal is 1～5nm.
Table 1 is the increase along with the solvent removal temperature, the relation of the particle diameter of the Pt particle of acquisition.
The Pt particle size and the specific area of table 1 different catalysts
| Preparation temperature (℃) | 30 | 40 | 50 | 60 | 70 |
| Particle diameter (nm) | 4.5 | 4.1 | 3.8 | 3.2 | 2.2 |
The present invention utilizes simple organosol method to prepare carrier loading platinum and platinum Quito unit metallic catalyst, the method simple possible, and cost of material is low, is suitable for suitability for industrialized production.Simultaneously, this method can be passed through the control preparation condition, and obtains different-grain diameter (1～5nm) carrier loading platinum and platinum Quito unit metallic catalyst.We use the catalyst that makes in DMFC, by electrochemical research methods such as cyclic voltammetries, studied the catalytic oxidation of catalyst to methyl alcohol, experimental result is also found: the catalyst that utilizes organic reaction to make shows more excellent electrocatalysis characteristic.
Description of drawings
Fig. 1 is the XRD figure spectrum of different-grain diameter Pt/C catalyst.Wherein: a:70 ℃, b:60 ℃, c:50 ℃, d:40 ℃, e:30 ℃
The specific embodiment
Embodiment 1, carrier loading platinum and platinum Quito unit metallic catalyst organosol preparation method: may further comprise the steps: the preparation of catalyst precursor; Injection in carrier; And the post processing of catalyst: under the room temperature, pipette 1.3mL 0.0386mol L-1 H
2PtCl
6Methanol solution and 5mL 0.0310mol L
-1SnCl
2Methanol solution, mix under the ultrasonic wave, form light yellow transparent Pt colloidal sol.Slowly add 40mgVulcan XC-72 activated carbon powder, N
2Protection ultrasonic wave dry a few hours, removes until methyl alcohol down fully.Ageing is after 12 hours under vacuum, the 100 ℃ of conditions, and washing is filtered for several times, does not have chlorion to eluate, and 90 ℃ of vacuum drying promptly make Pt content and be 20% Pt/C catalyst.
Embodiment 2: basic step is identical with embodiment 1:
Under the room temperature, pipette 1.5mL 0.0386mol L-1 H
2PtCl
6Ethanolic solution 0.6ml 0.09635mol/LRuCl
3Ethanolic solution and 5mL 0.0310mol L-1 SnCl
2Ethanolic solution, mix under the ultrasonic wave, form purple colloidal sol.Slowly add the 40mg molecular sieve, N
2Protection ultrasonic wave dry a few hours, removes until ethanol down fully.Ageing is after 12 hours under vacuum, the 100 ℃ of conditions, washing for several times, secondary water washing is washed, and filters, and does not have chlorion to eluate, 90 ℃ of vacuum drying promptly make PtRu content and are 30% PtRu/ molecular sieve catalyst.
Especially at the catalyst of Proton Exchange Membrane Fuel Cells, this catalyst is to methyl alcohol, hydrogen and CO, H
2Presented very high catalytic performance with the electrochemical oxidation of CO mist and the electrical catalyze reduction of oxygen.
Embodiment 3, and is substantially the same manner as Example 1, but the A component is the ethanol colloidal sol of potassium chloroplatinate.Carrier is a carbon black.Reaction temperature is-25 ℃.Protective atmosphere is Ar.
Embodiment 4, and is substantially the same manner as Example 1, but the A component is H
2PtCl
6Propyl alcohol colloidal sol and SnCl
2Propyl alcohol colloidal sol.Reaction temperature is 65 ℃.Protective atmosphere is H
2
Embodiment 5, and is substantially the same manner as Example 1, but the A component is the methyl alcohol colloidal sol of Pt-Ru-Os salt compounds.Reaction temperature is-10 ℃.Protective atmosphere is N
2
Embodiment 6, and is substantially the same manner as Example 4, but the A component is the acid compounds methyl alcohol colloidal sol of Pt-Ru-Os.Reaction temperature is 0 ℃.Protective atmosphere is O
2
Embodiment 7, and is substantially the same manner as Example 1, but the A component is the methyl alcohol colloidal sol of the salt compounds of Pt-Ru-Os-Ir.Reaction temperature is 35 ℃.Protective atmosphere is an air.
Embodiment 8, and is substantially the same manner as Example 1, but the A component is the methyl alcohol colloidal sol of the acid compounds of Pt-Ru-Os-Ir.Reaction temperature is 45 ℃.
Embodiment 9, and is substantially the same manner as Example 1, but the A component is the methyl alcohol colloidal sol of Pt compound and Pt-Ru-Os-Ir compound.
Embodiment 10, and is substantially the same manner as Example 1, but reaction temperature is 55 ℃.
Claims (5)
1, a kind of carrier loading platinum and platinum Quito unit metallic catalyst preparation method comprises: the preparation of catalyst precursor; Injection in carrier; And the post processing of catalyst, concrete steps are as follows:
The preparation of catalyst precursor: take by weighing platinum or the platinum Quito unit's metallic salt or the acid compounds of Sq, use the organic solvent wiring solution-forming, stir the SnCl that adds suitable proportion down
2Organic solution, reaction promptly made the organosol of metallic compound in 2～5 minutes, obtained component A,
The injection of carrier: under-25～65 ℃ of conditions, component A is added carrier, at N
2Protection is reaction down, gets B component,
The post processing part: B component is 60-150 ℃ of drying under suitable atmosphere, promptly makes carrier loading platinum and platinum Quito unit metallic catalyst.
2, according to the described carrier loading platinum of claim 1 and platinum Quito unit metallic catalyst preparation method, it is characterized in that step is as follows:
The preparation of catalyst precursor: take by weighing platinum or the platinum Quito unit's metallic salt or the acid compounds of Sq, be made into the solution of suitable concentration with organic solvent, while stir the SnCl that adds suitable proportion
2Organic solution, reaction promptly made the organosol of metallic compound in 2～5 minutes, component A,
The injection of carrier: under ultrasonic wave or the mechanical agitation component A that obtains is added carrier under-25～65 ℃ of conditions, at N
2Protection by control controlling reaction temperature solvent evaporates speed, thereby obtains different particle size carrier loading platinums and platinum Quito unit metallic catalyst down, gets B component,
Post processing part: use the NaOH of small amount of thermal or sodium carbonate liquor to wash the B component that step 2 obtains, after removing unreacted reducing agent and product, again through pickling, washing repeatedly repeatedly, and check with liquor argenti nitratis ophthalmicus, do not have chlorion in eluate, 60-150 ℃ of drying under suitable atmosphere promptly makes carrier loading platinum and platinum Quito unit metallic catalyst then.
3, according to claim 1 or 2 described carrier loading platinums and platinum Quito unit metallic catalyst preparation method, it is characterized in that: platinum Quito unit metallic catalyst is: Pt+M metallic catalyst, wherein M=Ru, Ir, Rh or Os.
4, according to claim 1 or 2 described carrier loading platinums and platinum Quito unit metallic catalyst preparation method, it is characterized in that: carrier is: active carbon, carbon black or molecular sieve.
5, according to the described carrier loading platinum of claim 3 and platinum Quito unit metallic catalyst preparation method, it is characterized in that: carrier is: active carbon, carbon black or molecular sieve.
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|---|---|---|---|
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|---|---|---|---|
| CNB021386587A CN1150984C (en) | 2002-11-26 | 2002-11-26 | Carrier loading platinum metal and preparation method of platinum based multielement metal catalyst organic collosol |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100391585C (en) * | 2005-08-08 | 2008-06-04 | 武汉大学 | Dialkyl glutamic surgar ester surfactant, prepn. method and use thereof |
| CN102029195B (en) * | 2009-09-30 | 2013-11-06 | 比亚迪股份有限公司 | Pretreatment method for disproportionating silane catalyst |
| CN103579639B (en) * | 2012-07-25 | 2016-06-29 | 中国科学院大连化学物理研究所 | A kind of cathode catalyst for fuel cell and preparation method |
| CN103755127B (en) * | 2014-01-14 | 2016-04-20 | 海南大学 | A kind of method of molten tin bath deoxidation |
| CN104209122A (en) * | 2014-08-14 | 2014-12-17 | 中国科学院长春应用化学研究所 | PtRu/C catalyst and its preparation method |
| CN107029751A (en) * | 2017-06-01 | 2017-08-11 | 南通百应能源有限公司 | The preparation method of high activity platinum copper catalyst |
| DK3473337T3 (en) * | 2017-10-23 | 2023-10-16 | Heraeus Deutschland Gmbh & Co Kg | PROCEDURE FOR MANUFACTURE OF SUPPORTED PLATINUM PARTICLES |
| CN111584885B (en) * | 2020-05-15 | 2022-05-10 | 无锡威孚高科技集团股份有限公司 | Preparation method of binary or multi-element noble metal catalyst for fuel cell |
| CN113463118B (en) * | 2021-05-12 | 2022-03-11 | 肯特催化材料股份有限公司 | Energy-saving production process of tetrapropylammonium hydroxide and tetrapropylammonium hydroxide aqueous solution prepared by same |
| CN113546622B (en) * | 2021-06-03 | 2022-06-10 | 南京大学 | Catalyst for catalytic oxidation of toluene at low temperature and high activity, and preparation method and application thereof |
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