A petal-shaped Cu-doped Ptru alloy catalyst and preparation method thereof

An alloy catalyst and a petal-shaped technology are applied in the field of petal-shaped Cu-doped PtRu alloy catalyst and its preparation, which can solve the problems of lack of research depth and application, high catalyst application cost, catalyst corrosion, etc., and achieve easy methanol oxidation reaction, Excellent methanol oxidation performance, easy catalytic effect

Inactive Publication Date: 2020-04-21
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] PtRu alloy catalyst is by far the most intensively studied and widely used anode catalyst for direct methanol fuel cells [2] , due to the arrangement of the PtRu alloy catalyst's own atoms and the characteristics of the corresponding electrons, the catalyst has excellent resistance to CO poisoning, but Ru is a rare metal element, which is the least abundant platinum group element in the earth's crust, and is also a platinum group element. One of the last elements discovered in the chemical industry, there are many limitations in industrial production and practical application, the application cost of the catalyst is high, and there will be serious corrosion of the catalyst during work
Nowadays, many studies focus on the PtRu alloy binary system [3] Or other metal doped PtRu ternary alloy system [4] development, but the depth and application of research are still lacking

Method used

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  • A petal-shaped Cu-doped Ptru alloy catalyst and preparation method thereof
  • A petal-shaped Cu-doped Ptru alloy catalyst and preparation method thereof
  • A petal-shaped Cu-doped Ptru alloy catalyst and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0042] 1) Put 7.2mg of copper acetate, 5mL of oleylamine, 73mg of CTAB and 60mg of glucose into a 100mL eggplant-shaped reaction bottle with a branched mouth and ultrasonically mix them evenly, assemble the instrument, and vacuumize for 10 minutes;

[0043] 2) React the mixed liquid obtained in step 1) at a high temperature of 270° C. for 0.5 h under CO atmosphere and magnetic stirring conditions, and cool to room temperature;

[0044] 3) Put 20.4mg of platinum acetylacetonate, 4mg of ruthenium acetylacetonate and 10mL of oleylamine in a beaker and mix them uniformly by ultrasonic, add to the product obtained in step 2), and stir evenly with magnetic force;

[0045] 4) React the mixed liquid obtained in step 3) at a high temperature of 320° C. for 1 h under CO atmosphere and magnetic stirring conditions, and cool to room temperature;

[0046] 5) The obtained product was washed with a mixture of toluene and methanol at a ratio of 2:1 and ethanol for more than 3 times, and dried...

Embodiment 2

[0054] 1) Put 5mg of copper acetate, 10mL of oleylamine, 30mg of CTAB and 60mg of glucose in a 100mL eggplant-shaped reaction bottle with a branched mouth and ultrasonically mix them evenly, assemble the instrument, and vacuumize for 10 minutes;

[0055] 2) React the mixed liquid obtained in step 1) at a high temperature of 270° C. for 0.5 h under CO atmosphere and magnetic stirring conditions, and cool to room temperature;

[0056] 3) Put 10.2 mg of platinum acetylacetonate, 7 mg of ruthenium acetylacetonate and 10 mL of oleylamine in a beaker and ultrasonically mix them uniformly, add to the product obtained in step 2), and stir evenly with magnetic force;

[0057] 4) React the mixed liquid obtained in step 3) at a high temperature of 300° C. for 0.5 h under CO atmosphere and magnetic stirring conditions, and cool to room temperature;

[0058] 5) The obtained product was washed with a mixture of toluene and methanol at a ratio of 1:1 and ethanol for more than 3 times, and dr...

Embodiment 3

[0061] 1) Put 7.2mg of copper acetate, 5mL of oleylamine, 60mg of CTAB and 60mg of glucose in a 100mL eggplant-shaped reaction bottle with a branched mouth and ultrasonically mix them evenly, assemble the instrument, and vacuumize for 15 minutes;

[0062] 2) React the mixed liquid obtained in step 1) at a high temperature of 270° C. for 0.5 h under CO atmosphere and magnetic stirring conditions, and cool to room temperature;

[0063] 3) Put 20.4mg of platinum acetylacetonate, 4mg of ruthenium acetylacetonate and 10mL of oleylamine in a beaker and mix them uniformly by ultrasonic, add to the product obtained in step 2), and stir evenly with magnetic force;

[0064] 4) React the mixed solution obtained in step 3) at a high temperature of 270°C for 0.5h under CO atmosphere and magnetic stirring conditions, and cool to room temperature;

[0065] 5) The obtained product was washed with a mixture of toluene and methanol at a ratio of 2:1 and ethanol for more than 3 times, and dried ...

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Abstract

The invention relates to a petal-shaped Cu doped PtRu alloy catalyst and a preparation method of the catalyst. The petal-shaped Cu doped PtRu alloy catalyst is in a petal-shaped morphology, Pt, Ru and Cu exist in an alloy form, and Pt and Ru atoms are distributed at an active site. The mass activity of the prepared petal-shaped PtRu / Cu catalyst in a methanol oxidation reaction is at least 3.1 times of commercial Pt / C. The preparation method is simple and easy to operate. The catalyst can be widely applied in many fields of methanol fuel cell catalysts and the like due to excellent methanol oxidation performance.

Description

technical field [0001] The invention relates to a petal-shaped Cu-doped PtRu alloy catalyst and a preparation method thereof, belonging to the application field of fuel cells. Background technique [0002] At present, the commercial catalyst is a noble metal Pt-based catalyst, which has a high cost, and as it is continuously mined and consumed, the cost is likely to continue to rise. Pt, as the catalyst layer of the key component of the fuel cell, will gradually reduce its activity and performance during the working process. Since Pt is a very expensive metal, the loading of Pt must be minimized, but not at the cost of degrading the performance of the fuel cell. Therefore, one of the ideas is to make a Pt alloy catalyst. In recent years, research on Pt alloy catalysts has emerged in an endless stream, and the types of alloys to be selected are also varied, such as: Pd, Cu, Ni and Ru, etc. Pt alloy catalysts are important in reducing the amount of Pt. At the same time, its ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/92B01J23/89B01J35/02
CPCB01J23/8926B01J35/023B01J35/026H01M4/921Y02E60/50
Inventor 木士春杨芳何大平薛盛峰田美月
Owner WUHAN UNIV OF TECH
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