High-dispersion Co-based bimetallic catalyst based on ZIFs and preparation method thereof

A bimetallic catalyst, highly dispersed technology, applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problem of low metal utilization
CN112973758APending Publication Date: 2021-06-18HUANENG CLEAN ENERGY RES INST +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUANENG CLEAN ENERGY RES INST
Publication Date
2021-06-18

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Abstract

The invention discloses a high-dispersion Co-based bimetallic catalyst based on ZIFs and a preparation method of the high-dispersion Co-based bimetallic catalyst based on ZIFs, and belongs to the technical field of synthesis of nanometer materials and catalysts, the method ingeniously utilizes the characteristics that metal nodes in ZnCo-ZIFs are high in dispersion and have periodic pore structures; first, a second active metal salt is introduced into ZIFs pore channels through a double-solvent method; then in the high-temperature calcination process, the low-boiling-point metal Zn volatilizes and plays a fence role, the distance between the active metals is increased, Co nodes and the second active metal are subjected to in-situ reduction, and the high-dispersion Co-based bimetallic catalyst loaded on the nitrogen-doped carbon carrier is obtained. The method is simple in process and convenient to operate, the composition of the obtained high-dispersion Co-based bimetallic catalyst is flexible and adjustable, metal particles are distributed in a high-dispersion form, and the high-dispersion Co-based bimetallic catalyst has good stability and is expected to be applied to hydrogenation reaction, synthesis gas conversion, alcohol selective oxidation and other reactions.
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Description

technical field

[0001] The invention belongs to the technical field of nanometer material and catalyst synthesis, and relates to a highly dispersed Co-based bimetallic catalyst based on ZIFs and a preparation method thereof. Background technique

[0002] Zeolitic imidazolate frameworks (Zeolitic imidazolate frameworks, ZIFs) materials are a subspecies of metal-organic frameworks (Metal organic frameworks, MOFs) materials, composed of metal ions with a tetrahedral coordination configuration (such as Zn 2+ 、Co 2+ ) coordinated with imidazole-based organic ligands, including Zn-based ZIF-8, Co-based ZIF-67, etc. ZIFs materials have a typical zeolite-like periodic topology, large specific surface area, high thermal stability and easy preparation, and have a wide range of applications in the fields of gas storage and separation, sensing, catalysis and membrane science.

[0003] The Chinese invention patent with application number 201510168261.9 discloses a ZIF-8-based hydrogena...

Claims

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