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Preparation method for catalyst made from composite material, product and application thereof

A composite material and catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical elements of heterogeneous catalysts, etc., can solve problems such as shedding and catalyst deactivation, reduce the difficulty of forming and manufacturing, and achieve a large specific surface area. , to increase the effect of material transport

Active Publication Date: 2019-04-09
HUAZHONG UNIV OF SCI & TECH
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  • Claims
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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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  • Preparation method for catalyst made from composite material, product and application thereof
  • Preparation method for catalyst made from composite material, product and application thereof
  • Preparation method for catalyst made from composite material, product and application thereof

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preparation example Construction

[0035] The present invention provides a method for preparing a composite material catalyst, which includes the following steps:

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

[0037] S2: Using a chemical or electrochemical process to selectively etch the nano / microporous structure amorphous alloy precursor through an etching solution, and prepare a metal nanoporous structure on the surface of the precursor to obtain a hierarchical porous structure;

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

[0039] i. Heating and oxidizing in an oxygen atmosphere;

[0040] ii. Anodize in lye;

[0041] iii. Electrostatic adsorption of nano-scale oxides;

[0042] iv. Vulcanization in polysulfides;

[0043] v. Electrochemical deposi...

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Abstract

The invention discloses a preparation method for a catalyst made from a composite material, a product and an application thereof and belongs to the field of catalysts. The preparation method comprisesthe following steps: S1, preparing an amorphous alloy precursor of a mm / micro-porous structure by a 3D printing mode; S2, selectively corroding the amorphous alloy precursor of the mm / micro-porous structure by a corrosion solution by means of a chemical or electrochemical process to prepare a metal nano porous structure on the surface of the precursor so as to obtain a graded porous structural piece; and S3, executing surface modification on the graded porous structural piece to form a metal oxide or a metal sulfide so as to improve the catalytic performance of the graded porous structural piece, wherein one or more modes are adopted to execute surface modification. The invention also provides the catalyst prepared by the method. The catalyst can be applied to the field of sewage treatment and electro-catalysis. The method is simple and feasible, and the prepared catalyst is relatively good in effect.

Description

Technical field [0001] The invention belongs to the technical field of porous material catalyst preparation, and specifically relates to a preparation method, product and application of a three-dimensional hierarchical porous metal-based composite material catalyst. Background technique [0002] Catalysts play a pivotal role in the current chemical industry, and it is essential to develop new types of catalysts that can be fast, efficient and stable. [0003] At present, the commonly used industrial catalysts are mainly nano-sized powders, and these powders are dispersed and supported on carriers with a huge specific surface area, such as zeolite, porous carbon, diatomaceous earth, molecular sieves, etc. In the process of catalytic reaction, these catalysts are easy to fall off from the carrier and cause the catalyst to deactivate. In addition, the preparation methods of nano-powder catalysts mainly include: hydrothermal method, solvothermal method, chemical vapor deposition, sol-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755B01J35/10B22F3/105B22F3/24B33Y10/00C02F1/72C02F101/38
CPCC02F1/722C02F1/725B01J23/002B01J23/755B22F3/24B33Y10/00B01J2523/00B22F2003/242B22F2003/248C02F2101/38C02F2305/026B22F10/00B22F10/36B22F10/62B22F10/32B22F10/66B22F10/366B22F10/64B22F12/52B22F10/50B22F10/28B01J35/61B01J35/651B01J2523/17B01J2523/31B01J2523/48B01J2523/847Y02P10/25
Inventor 柳林张诚杨冲
Owner HUAZHONG UNIV OF SCI & TECH
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