铈基催化剂在挥发性有机物催化燃烧治理中的研究进展

铈基催化剂由于其特殊的氧化还原性能在催化反应中得到了广泛应用,在非均相催化反应中其表面性质尤为重要.二氧化铈晶格中的氧缺陷对表面催化反应起着非常重要的作用,而二氧化铈可以有效调节催化剂表面酸碱性,修饰催化活性中心的结构,提高催化剂的储放氧能力,增强其结构稳定性和提高活性组分的分散度等.我们分别从二氧化铈催化剂的制备方法...

Research Progress of Ce-based Catalysts in Catalytic Combustion Control of Volatile Organic Compounds

Cerium-based catalysts have been widely studied in catalytic reactions due to their special RE-DOX properties, and their surface properties are particularly important in heterogeneous catalytic reactions. The oxygen vacancy easily formed in the cerium oxide lattice plays a very important role in the surface catalytic reaction, and cerium oxide can effectively regulate the acidity and alkalinity of the catalyst, modify the structure of the catalytic active center, improve the oxygen storage capacity of the catalyst, enhance its structural stability, and improve the dispersion of the active components. In this paper, the preparation methods of CeO2 catalysts, active sites and types of catalysts, the relationship between oxygen vacancy property and catalytic performance, and the recent progress in the catalytic degradation of volatile organic pollutants (VOCs) by pure CeO2 and CeO2-based catalytic materials are reviewed. Finally, suggestions and prospects for the treatment of volatile organic compounds (VOCs) by cerium-based catalysts in the future are put forward.