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Cobalt-nickel bimetallic catalyst and preparation method thereof

A bimetallic catalyst, cobalt-nickel technology, applied in the field of cobalt-nickel bimetallic catalyst and its preparation, can solve problems such as poor stability, ethanol sensitivity, limited reserves, etc., and achieve the effects of preventing agglomeration, abundant active centers, and simple preparation process

Pending Publication Date: 2020-08-18
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these noble metal-based catalysts have many fatal disadvantages, such as limited reserves, poor stability, and extreme sensitivity to ethanol.

Method used

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  • Cobalt-nickel bimetallic catalyst and preparation method thereof
  • Cobalt-nickel bimetallic catalyst and preparation method thereof
  • Cobalt-nickel bimetallic catalyst and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Weigh 1g of guanine, place it in a 30mL ceramic crucible, place it in a high-temperature tube furnace, heat it to 1000°C in a nitrogen atmosphere at a rate of 5°C / min, keep the temperature at a constant temperature for 2h, and wait for it to cool naturally to room temperature to obtain a porous carbon material. Weigh 150 mg of porous carbon, add it to a mixed solution of 40 mL of methanol and 40 mL of ethanol, and add 50 mg of F127 as a surfactant, and disperse it uniformly by ultrasonic treatment. Add 328mg of 2-methylimidazole under magnetic stirring. After stirring for 0.5 hours, add 292mg of cobalt nitrate hexahydrate, continue stirring for 0.5 hours, add 146mg of nickel nitrate hexahydrate, and let stand at room temperature for 24 hours. The product was collected by centrifugation and washed. Then, the product was dried in a vacuum oven at 60° C. overnight to obtain a black powdery solid. Finally, the product was put into a 30mL ceramic crucible, placed in a high...

Embodiment 2

[0028] Weigh 1g of guanine, place it in a 30mL ceramic crucible, place it in a high-temperature tube furnace, heat it to 1000°C in a nitrogen atmosphere at a rate of 5°C / min, keep the temperature at a constant temperature for 2h, and wait for it to cool naturally to room temperature to obtain a porous carbon material. Weigh 150 mg of porous carbon, add it to a mixed solution of 40 mL dimethyl sulfoxide and 40 mL ethanol, and add 50 mg of F127 as a surfactant, and disperse it uniformly by ultrasonic treatment. Add 328mg of 2-methylimidazole under magnetic stirring. After stirring for 0.5 hours, add 292mg of cobalt nitrate hexahydrate, continue stirring for 0.5 hours, add 146mg of nickel nitrate hexahydrate, and let stand at room temperature for 24 hours. The product was collected by centrifugation and washed. Then, the product was dried in a vacuum oven at 60° C. overnight to obtain a black powdery solid. Finally, the product was put into a 30mL ceramic crucible, placed in a ...

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Abstract

The invention discloses a cobalt-nickel bimetallic catalyst and a preparation method thereof. Biological micromolecules are taken as a nitrogen source to prepare porous carbon. A metal organic framework compound is in-situ loaded or wrapped and pyrolyzed at a high temperature to prepare the heteroatom doped cobalt-nickel bimetallic catalyst. The raw materials are easy to obtain and low in price, and a new nitrogen source does not need to be introduced during the preparation of a nitrogen-doped porous carbon material. The catalytic performance of the material can be further improved through thesynergistic effect of cobalt and nickel. A good method is provided for preparing a non-noble metal catalyst, and a basis is provided for further experimental optimization and industrial production.

Description

technical field [0001] The invention belongs to the field of metal catalyst synthesis, and in particular relates to a cobalt-nickel bimetallic catalyst and a preparation method thereof. [0002] technical background [0003] With the continuous progress and development of human society, the consumption of fossil energy is increasing day by day, which also leads to a series of problems such as resource shortage and environmental pollution. Therefore, it is urgent to develop green and clean renewable energy. The oxygen reduction reaction (ORR) is one of the most critical reactions in energy conversion systems such as fuel cells (R. Bashyam, P.A Zelenay, A class of non-precious metal composite catalysts for fuel cells. Nature 443(2006) 63–66 .), when combined with its inverse hydrogen evolution reaction (OER), can be assembled into rechargeable metal-air batteries, both of which belong to the core process of producing clean and renewable energy (F. Y. Cheng and J. Chen, Metal–ai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755B01J27/24B01J35/00B01J35/10B01J37/08
CPCB01J27/24B01J23/755B01J37/084B01J37/086B01J35/33B01J35/60
Inventor 温娜张亮吴志龙周鑫王琪
Owner FUZHOU UNIV
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