A spinel structure composite oxide and a preparation method and application thereof
By preparing spinel-structured composite oxides, the problems of insufficient catalyst activity, poor selectivity, and easy chlorine poisoning were solved, achieving efficient deep oxidation and long-life catalysis of CVOCs, and reducing catalyst costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ZHEJIANG SHUNFU PRINTING
- Filing Date
- 2026-05-22
- Publication Date
- 2026-07-17
AI Technical Summary
Existing catalysts suffer from insufficient activity, poor selectivity, susceptibility to chlorine poisoning, and poor stability when catalytically oxidizing chlorine-containing volatile organic compounds (CVOCs). Noble metal catalysts are expensive, and the excessive acidity of transition metal oxide surfaces leads to the formation of byproducts. Traditional spinel catalysts have a limited number of active centers.
A spinel-structured composite oxide with the general chemical formula A'xA''1-xB2O4 is prepared by means of two different metal cations occupying the A site and B being a metal cation occupying the B site. The electronic structure and the distribution of acidic sites on the surface are controlled to achieve efficient catalytic oxidation.
The reaction achieved highly efficient deep oxidation of CVOCs within the reaction range of 200℃~400℃ (CO2 selectivity ≥95%, and chlorinated organic byproduct selectivity reduced to below 2%), significantly reducing catalyst cost and extending catalyst life.
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Figure CN122399780A_ABST