A kind of preparation method of composite material catalyst, its product and application

A technology of composite materials and catalysts, applied in the direction of chemical instruments and methods, physical/chemical process catalysts, heterogeneous catalyst chemical elements, etc., can solve problems such as shedding, catalyst deactivation, etc., to reduce the difficulty of forming and manufacturing, large specific surface area , the effect of a reasonable liquid flow path

Active Publication Date: 2020-12-18
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

During the catalytic reaction, these catalysts are easily detached from the support, resulting in catalyst deactivation

Method used

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  • A kind of preparation method of composite material catalyst, its product and application
  • A kind of preparation method of composite material catalyst, its product and application
  • A kind of preparation method of composite material catalyst, its product and application

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preparation example Construction

[0035] The invention provides a kind of preparation method of composite material catalyst, it comprises the steps:

[0036] S1: Preparation of nano / microporous amorphous alloy precursors by 3D printing;

[0037] S2: Selectively corrode nano / microporous amorphous alloy precursors with chemical or electrochemical processes through corrosive liquids, prepare metal nanoporous structures on the surface of the precursors, and obtain hierarchical porous structures;

[0038] S3: Perform surface modification on the hierarchical porous structure to form metal oxides or metal sulfides, so as to improve the catalytic performance of the hierarchical porous structure, and perform surface modification in one or more of the following ways:

[0039] i. Heating oxidation under oxygen atmosphere;

[0040] ii. Anodizing in lye;

[0041] iii. Electrostatic adsorption of nanoscale oxides;

[0042] iv. Vulcanization in polysulfides;

[0043] v. Electrochemical deposition.

[0044] In actual eng...

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Abstract

The invention discloses a method for preparing a composite material catalyst, its products and applications, and belongs to the field of catalysts. The method includes: S1 adopting 3D printing to prepare nano / microporous structure amorphous alloy precursors; S2 adopting chemical or electrochemical processes , the nano- / micro-porous amorphous alloy precursor is selectively etched by corrosive liquid, and the metal nanoporous structure is prepared on the surface of the precursor to obtain a hierarchical porous structure; S3 performs surface modification on the hierarchical porous structure to form a metal oxide compounds or metal sulfides, so as to improve the catalytic performance of the hierarchical porous structure, one or more of the following methods are used to perform surface modification. The invention also provides the catalyst prepared by the above method, which can be applied in the fields of sewage treatment and electrocatalysis. The method of the invention is simple and easy, and the prepared catalyst has better effect.

Description

technical field [0001] The invention belongs to the technical field of porous material catalyst preparation, and in particular relates to a preparation method, product and application of a three-dimensional hierarchical porous metal matrix composite catalyst. Background technique [0002] Catalysts play a pivotal role in today's chemical industry, and it is very important to develop new catalysts that are fast, efficient and stable. [0003] At present, the commonly used industrial catalysts are mainly nano-scale powders, which are dispersed and loaded on carriers with large specific surface areas, such as zeolite, porous carbon, diatomaceous earth, molecular sieves, etc. During the catalytic reaction, these catalysts are prone to detachment from the support, resulting in catalyst deactivation. In addition, the preparation methods of nano-powder catalyst mainly include: hydrothermal method, solvothermal method, chemical vapor deposition, sol-gel method, etc. The amount of c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/755B01J35/10B22F3/105B22F3/24B33Y10/00C02F1/72C02F101/38
CPCC02F1/722C02F1/725B01J23/002B01J23/755B01J35/1004B01J35/1066B22F3/24B33Y10/00B01J2523/00B22F2003/242B22F2003/248C02F2101/38C02F2305/026B22F10/00B22F10/36B22F10/62B22F10/32B22F10/66B22F10/366B22F10/64B22F12/52B22F10/50B22F10/28B01J2523/17B01J2523/31B01J2523/48B01J2523/847Y02P10/25
Inventor 柳林张诚杨冲
Owner HUAZHONG UNIV OF SCI & TECH
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