Hydrophobic transition metal composite catalyst, and preparation method and application thereof

By preparing a hydrophobic transition metal composite catalyst, the problem of poor synergistic removal of VOCs and NOx in flue gas with high water content at medium and low temperatures was solved, achieving efficient and stable catalytic effect and low-cost flue gas purification.

CN118204091BActive Publication Date: 2026-07-21NORTHEAST DIANLI UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NORTHEAST DIANLI UNIVERSITY
Filing Date
2024-03-06
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Existing transition metal catalysts have poor catalytic performance under medium and low temperature conditions, and their synergistic removal effect on VOCs and NOx in flue gas with high water content is limited.

Method used

A hydrophobic transition metal composite catalyst was prepared by using hydrothermal treatment and calcination to form Cu-Ce-O and MnO crystal phases, which were then combined with TiO2 support to form a composite metal oxide, thereby improving the active site density and hydrophobic properties of the catalyst.

Benefits of technology

The catalyst achieved efficient synergistic removal of VOCs and NOx in flue gas with high moisture content at medium and low temperatures. The catalyst has good activity and strong stability, and the preparation process is simple and low cost.

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Abstract

The application provides a hydrophobic transition metal composite catalyst and a preparation method and application thereof, and belongs to the technical field of simultaneous removal of VOCs and NOx pollutants in flue gas. A precursor solution is obtained by mixing a metal active component, a fatty alcohol polyoxyethylene ether, ethylene glycol and an alcohol solvent; a ligand solution is obtained by mixing starch, melamine, cyclodextrin, glucose and ammonia water; the precursor solution and the ligand solution are mixed and then subjected to hydrothermal treatment, a catalyst precursor is obtained, the catalyst precursor is subjected to preheating treatment in a protective atmosphere and then calcination in a carbon dioxide atmosphere, and a catalyst precursor is obtained; the catalyst precursor, a titanium dioxide precursor and a binder are mixed and then dried to obtain a catalyst ligand; the catalyst ligand is subjected to shaping treatment in a protective atmosphere to obtain the hydrophobic transition metal composite catalyst. The hydrophobic transition metal composite catalyst has the characteristics of good reactivity, high removal efficiency, strong stability and excellent hydrophobicity, and has a wide application prospect in the field of efficient and stable simultaneous removal of VOCs and NOx in flue gas.
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