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Preparation method of gold-palladium-cobalt alloy/carbon high-performance ethanol oxidation catalyst

A technology of ethanol oxidation and cobalt alloys, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve problems such as methanol toxicity

Inactive Publication Date: 2015-04-29
SOUTHWEST UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, methanol has certain toxicity. Therefore, in order to realize the application of DAFC in mobile power sources such as mobile phones, laptop computers and electric vehicles, new liquid fuels must be explored to replace toxic methanol. Among them, ethanol is renewable and easy to produce in large quantities. , and non-toxic, so it is likely to become a DAFC fuel to replace methanol

Method used

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  • Preparation method of gold-palladium-cobalt alloy/carbon high-performance ethanol oxidation catalyst
  • Preparation method of gold-palladium-cobalt alloy/carbon high-performance ethanol oxidation catalyst
  • Preparation method of gold-palladium-cobalt alloy/carbon high-performance ethanol oxidation catalyst

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Embodiment 1

[0025] The preparation method of the gold-palladium-cobalt alloy / carbon high-performance ethanol oxidation catalyst of the present embodiment comprises the following steps:

[0026] 1) Add 100ul 1M sodium hydroxide solution to 1ml 9.8mg / mL chloroauric acid solution, mix well and blow dry, add 19ml oleylamine, 1ml oleic acid, 5ml octadecene to get a mixed solution;

[0027] 2) After ultrasonically dispersing the mixed solution prepared in step 1), add 22.8 mg of palladium acetylacetonate solid and 18.7 mg of cobalt acetate tetrahydrate solid, and continue ultrasonic dissolution. Under the protection of nitrogen, the solution is heated to 270 degrees for 2 hours;

[0028] 3) Wash the reaction solution in step 2) by centrifugation twice with absolute ethanol to obtain a precipitate;

[0029] 4) Add 20mg of XC-72 carbon black into n-hexane and sonicate for 2 hours to obtain a uniformly dispersed suspension;

[0030] 5) Add the precipitate obtained in step 3) to the suspension obt...

Embodiment 2

[0037] The preparation method of the gold-palladium-cobalt alloy / carbon high-performance ethanol oxidation catalyst of the present embodiment comprises the following steps:

[0038] 1) Add 100ul 1M sodium hydroxide solution to 1ml 9.8mg / mL chloroauric acid solution, mix well and blow dry, add 19ml oleylamine, 1ml oleic acid, 5ml octadecene to get a mixed solution;

[0039] 2) After ultrasonically dispersing the mixed solution prepared in step 1), add 18.28 mg of palladium acetylacetonate solid and 14.95 mg of cobalt acetate tetrahydrate solid, and continue ultrasonic dissolution. Under the protection of nitrogen, the solution is heated to 270 degrees for 2 hours;

[0040] 3) Wash the reaction solution in step 2) by centrifugation twice with absolute ethanol to obtain a precipitate;

[0041] 4) Add 20mg of XC-72 carbon black into n-hexane and sonicate for 2 hours to obtain a uniformly dispersed suspension;

[0042] 5) Add the precipitate obtained in step 3) to the suspension o...

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Abstract

The invention discloses a preparation method of a gold-palladium-cobalt alloy / carbon high-performance ethanol oxidation catalyst. The method comprises the following steps: adding a little of sodium hydroxide solution to a chloroauric acid solution, mixing evenly and then drying; sequentially adding oleylamine, oleic acid and octadecene; adding a palladium acetylacetonate solid and a cobaltous acetate tetrahydrate solid, ultrasonically dissolving and carrying out heating reaction under nitrogen protection; centrifugally washing with absolute ethyl alcohol to obtain sediments; adding an N-hexane suspension of carbon black to the sediments, further carrying out ultrasonic treatment, and then centrifugally washing with normal hexane and absolute ethyl alcohol to obtain sediments; and putting the sediments into a drying oven and drying to obtain the gold-palladium-cobalt alloy / carbon high-performance ethanol oxidation catalyst. Compared with a commercial palladium / carbon catalyst, the gold-palladium-cobalt alloy / carbon catalyst prepared by the method has more excellent ethanol oxidation catalysis properties and long-term stability.

Description

technical field [0001] The invention relates to a preparation method of an ethanol oxidation catalyst, in particular to a preparation method of a gold-palladium-cobalt alloy / carbon high-performance ethanol oxidation catalyst. Background technique [0002] Due to the advantages of high energy conversion efficiency and low environmental pollution, fuel cells are attracting increasing attention, while direct liquid alcohol fuel cells (DAFC) have their unique advantages, such as abundant fuel sources, low prices, portability and storage. Safety and convenience, etc., so it is expected to become an ideal mobile power supply in the future. However, methanol has certain toxicity. Therefore, in order to realize the application of DAFC in mobile power sources such as mobile phones, laptop computers and electric vehicles, new liquid fuels must be explored to replace toxic methanol. Among them, ethanol is renewable and easy to produce in large quantities. , and non-toxic, so it is lik...

Claims

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Application Information

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IPC IPC(8): B01J23/89H01M4/92
CPCY02E60/50
Inventor 汪敏赵海星赵志亮
Owner SOUTHWEST UNIVERSITY
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