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A kind of preparation method and application of mof-derived cual/n-c catalyst

A catalyst, cual-mofs technology, used in electrolytic organic production, electrolytic components, electrodes, etc., can solve the problems of precise control or substitution of bimetallic difficult atoms, poor Faradaic efficiency, low current density, etc., to improve product selectivity Effect

Active Publication Date: 2021-09-03
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims to solve the existing double gold metals / carbides derived from MOFs as precursors. The doping between double metals is difficult to achieve precise control or substitution of atomic positions, and most of them are used for electrocatalytic reduction of CO. 2 CO is produced and cannot be further reduced to C 2 h 4 ; Solve the existing Cu catalytic reduction of CO 2 Product C 2 h 4 , there exists C 2 h 4 The Faraday efficiency is poor, the current density is low and the competition hydrogen evolution reaction is serious, and the preparation method and application of a MOF-derived CuAl / N-C catalyst are provided

Method used

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  • A kind of preparation method and application of mof-derived cual/n-c catalyst
  • A kind of preparation method and application of mof-derived cual/n-c catalyst
  • A kind of preparation method and application of mof-derived cual/n-c catalyst

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specific Embodiment approach 1

[0034] Specific embodiment one: present embodiment a kind of preparation method of CuAl / N-C catalyst derived from MOF, it is finished according to the following steps:

[0035] 1. Weighing:

[0036] Weighing deprotonating reagent, organic solvent, ligand, copper salt and aluminum salt;

[0037] The volume ratio of the amount of the substance of the deprotonating reagent to the organic solvent is (1.2~7.2)mmol:35mL; the volume ratio of the amount of the substance of the ligand to the organic solvent is (0.3~1.2)mmol: 35mL; the mol ratio of the copper salt and the aluminum salt is (0.1~99):1; the volume ratio of the sum of the amount of the copper salt and the aluminum salt to the organic solvent is (1.2~2.4)mmol: 35mL;

[0038] 2. Preparation of precursor salt solution:

[0039] Dissolving the ligand, copper salt and aluminum salt weighed in step 1 in an organic solvent to obtain a precursor salt solution;

[0040] 3. Preparation of CuAl-MOFs:

[0041] Adding the deprotona...

specific Embodiment approach 2

[0050] Embodiment 2: This embodiment differs from Embodiment 1 in that the deprotonating reagent described in step 1 is sodium hydroxide, triethylamine or sodium methoxide. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0051] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the copper salt described in step one is Cu(CH 3 COO) 2 , CuCl 2 2H 2 O or Cu(NO 3 ) 2 ·3H 2 O. Others are the same as in the first or second embodiment.

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Abstract

A preparation method and application of a MOF-derived CuAl / N-C catalyst, which relates to a preparation method and application of a MOF-derived catalyst. The present invention aims to solve the existing double gold metals / carbides derived from MOFs as precursors. The doping between double metals is difficult to achieve precise control or substitution of atomic positions, and most of them are used for electrocatalytic reduction of CO. 2 CO is produced and cannot be further reduced to C 2 h 4 ; Solve the existing Cu catalytic reduction of CO 2 Product C 2 h 4 , there exists C 2 h 4 The problems of poor Faradaic efficiency, low current density and serious competition for hydrogen evolution reaction. Preparation method: 1. weighing; 2. preparing precursor salt solution; 3. preparing CuAl-MOFs; 4. preparing CuAl / N-C. The present invention is used for the preparation method and application of MOF-derived CuAl / N-C catalyst.

Description

technical field [0001] The invention relates to a preparation method and application of a MOF-derived catalyst. Background technique [0002] Electrochemical reduction of CO 2 The technology is a method that can be carried out under normal temperature and pressure, and can convert CO 2 Conversion to valuable fuels or chemicals such as CH 3 OH, CH 4 、C 2 h 4 etc., the reaction conditions are mild, no high temperature and high pressure are required, the equipment is flexible to operate, and the product selectivity and reaction speed can be regulated by simply changing the electrolysis conditions, which is considered as CO 2 It is the most promising transformation technology in resource utilization. However, due to CO 2 The molecular chemical properties are stable, and its activation and bond breaking require high energy. For example, thermal conversion, photochemical and electrochemical technologies all require external catalysts to reduce energy consumption and increas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/091C25B3/25C25B3/03
Inventor 王志江单晶晶
Owner HARBIN INST OF TECH
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