A bimetallic ZSM-5 molecular sieve catalyst and its preparation method and application

By introducing auxiliary metals into ZSM-5 molecular sieves to form a loaded bimetallic catalyst, the problems of easy deactivation of single transition metal catalysts at high temperatures and low hydrogen peroxide utilization rate are solved, and the ability to efficiently treat high-concentration organic pollutant wastewater is achieved, especially in catalytic wet hydrogen peroxide oxidation reactions within a wide pH range.

CN117443438BActive Publication Date: 2025-09-19DALIAN INSTITUTE OF CHEMICAL PHYSICS CHINESE ACADEMY OF SCIENCES
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Patent Information

Application Number
CN202210842309.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-07-18
Publication Date
2025-09-19
Estimated Expiration
2042-07-18

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Abstract

The present application discloses a kind of ZSM-5 type molecular sieve catalyst of load bimetallic and its preparation method, application, including ZSM-5 type molecular sieve, active component and auxiliary component, the auxiliary component is loaded on the skeleton and surface of the ZSM-5 type molecular sieve, the active component is loaded on the auxiliary component, wherein the active component existence mode includes oxidation state, the existence mode of the auxiliary component includes metallic state, the active component includes active element, the active element is selected from one of Mn, Fe, Co, Ni, Cu, the auxiliary component includes auxiliary element, the auxiliary element is selected from one of La, Ce, Mo. Two metals are doped or loaded on molecular sieve carrier, the applicable pH range of catalytic wet hydrogen peroxide oxidation technology is broadened, and the high activity of catalyst with lower active component loading amount, high stability and high utilization rate of hydrogen peroxide are achieved in high temperature and normal pressure catalytic wet hydrogen peroxide oxidation process.
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