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Preparation method and application of copper-indium composite catalyst

A composite catalyst, copper indium technology, applied in the direction of electrodes, electrolytic organic production, electrolytic process, etc., can solve the problems of limiting the commercial application of copper-based catalysts, slow electron transfer kinetics, poor selectivity of specific products, etc., to achieve multi-reaction activity site, beneficial to adsorption, and the effect of large application potential

Inactive Publication Date: 2021-07-23
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, copper-based catalysts still have many problems, such as: (1) low energy efficiency due to high electrical overpotential; (2) slow electron transfer kinetics; (3) complex product types, poor selectivity to specific products, and Difficult to separate; (4) The stability of the catalyst is poor, generally deactivated within a few hours, which severely limits the commercial application of copper-based catalysts

Method used

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  • Preparation method and application of copper-indium composite catalyst
  • Preparation method and application of copper-indium composite catalyst
  • Preparation method and application of copper-indium composite catalyst

Examples

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Embodiment 1

[0033] A preparation method of a copper-indium composite catalyst, specifically comprising the steps of:

[0034] (1) Weigh anhydrous indium chloride and copper chloride dihydrate with a raw material molar ratio of 1:5, wherein, anhydrous indium chloride InCl 3 0.221 g, copper chloride dihydrate CuCl 2 2H 2 O 0.852g, and placed in a container, add 100mL of deionized water, under normal temperature conditions, with a rotation speed of 400r / min, stir for 3min to dissolve, to obtain a mixed solution;

[0035] (2) Add 2.5mL of concentrated ammonia water with a concentration of 14M to the mixed solution in step (1), stir at room temperature at a speed of 800r / min for 2min, and mix well;

[0036] (3) Continue to dropwise add 10mL of sodium hydroxide solution with a concentration of 1M in the mixed solution, and stir for 10min at room temperature with a rotation speed of 800r / min;

[0037] (4) Finally, 1 mL of hydrazine solution was added dropwise to the mixed solution, and stirre...

Embodiment 2

[0040] A preparation method of a copper-indium composite catalyst, specifically comprising the steps of:

[0041] (1) Weigh anhydrous indium chloride and copper chloride dihydrate with a raw material molar ratio of 1:10, wherein anhydrous indium chloride InCl 3 0.111 g, copper chloride dihydrate CuCl 2 2H 2 O 0.852g, and placed in a container, add 100mL of deionized water, under normal temperature conditions, with a rotation speed of 400r / min, stir for 4min to dissolve, to obtain a mixed solution;

[0042] (2) Add 2.5mL of concentrated ammonia water with a concentration of 14M to the mixed solution in step (1), stir for 3min at room temperature at a speed of 800r / min, and mix well;

[0043] (3) Continue to add dropwise 10 mL of 1M sodium hydroxide solution in the mixed solution, and stir for 15 min at room temperature with a rotation speed of 800 r / min;

[0044] (4) Finally, 1 mL of hydrazine solution was added dropwise to the mixed solution, and stirred at room temperature...

Embodiment 3

[0047] A preparation method of a copper-indium composite catalyst, specifically comprising the steps of:

[0048] (1) Weigh anhydrous indium chloride and copper chloride dihydrate with a raw material molar ratio of 1:20, wherein anhydrous indium chloride InCl 3 0.055 g, copper chloride dihydrate CuCl 2 2H 2 O 0.852g, and placed in a container, add 100mL of deionized water, under normal temperature conditions, with a rotation speed of 400r / min, stir for 3min to dissolve, to obtain a mixed solution;

[0049] (2) Add 2.5mL of concentrated ammonia water with a concentration of 14M to the mixed solution in step (1), stir for 3min at room temperature at a speed of 800r / min, and mix well;

[0050] (3) Continue to dropwise add 12mL of sodium hydroxide solution with a concentration of 1M in the mixed solution, and stir for 15min at room temperature with a rotation speed of 800r / min;

[0051] (4) Finally, 1 mL of hydrazine solution was added dropwise to the mixed solution, and stirre...

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Abstract

The invention discloses a preparation method and application of a copper-indium composite catalyst, and belongs to the technical field of material preparation and electro-catalysis. The composite cuprous oxide and indium hydroxide electrocatalyst is prepared by taking cupric chloride dihydrate CuCl2. 2H2O, anhydrous indium chloride InCl3, stronger ammonia water, sodium hydroxide and hydrazine solution N2H4 as raw materials, feeding in batches, co-precipitating under a normal temperature condition, introducing an In-based material into a pure cuprous oxide Cu2O material, and developing the high-performance composite cuprous oxide and indium hydroxide electrocatalyst for electrocatalytic reduction of carbon dioxide for the first time. The prepared electrocatalyst has the advantages of being large in specific surface area and good in electrocatalytic performance. The preparation process is simple and convenient, the energy consumption is low, the cost is low, and the application potential is great.

Description

technical field [0001] The invention belongs to the technical field of material preparation and electrocatalysis, and in particular relates to a preparation method and application of a copper-indium composite catalyst. Background technique [0002] In recent years, with the large-scale exploitation and consumption of fossil fuels, the problem of excessive carbon dioxide emissions has also begun to emerge. Transitional emission of carbon dioxide is a kind of damage to the carbon cycle and will lead to ecological problems. Therefore, reducing carbon dioxide emission is one of the most important scientific challenges today. Atmospheric CO 2 Abundant resources that can be catalytically converted into industrially renewable chemicals and fuels, thus emitting CO 2 You can also look at it from another angle and consider it as a valuable resource. 2 Recycling and conversion can solve two major problems of the environment and energy. [0003] Existing means in industry can conver...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/091C25B3/26C25B3/07
Inventor 梁诗景潘思序廖婉茹祝淑颖
Owner FUZHOU UNIV
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