摘要
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、催化剂活性位点和种类、氧缺陷性质及与催化性能之间的构效关系、纯二氧化铈及作为载体的二氧化铈基催化材料催化燃烧挥发性有机物等方面综述了二氧化铈基催化剂的最新研究进展.最后提出了二氧化铈基催化剂在挥发性有机物治理应用中的建议与展望.
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 CeO_(2) 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 compounds(VOCs)by pure CeO_(2) and CeO_(2)-based catalytic materials are reviewed.Finally,suggestions and prospects for the treatment of volatile organic compounds(VOCs)by ceriumbased catalysts in the future are put forward.
作者
张迎
朱文杰
富特
李英豪
罗永明
陆继长
ZHANG Ying;ZHU Wen-jie;FU Te;LI Ying-hao;LUO Yong-ming;LU Ji-chang(Faculty of Environmental Science and Engineering,Kunming University of Science and Technology,Kunming 650500,China;The Innovation Team for Volatile Organic Compounds Pollutants Control and Resource Utilization of Yunnan Province,Kunming 650500,China;The Higher Educational Key Laboratory for Odorous Volatile Organic Compounds Pollutants Control of Yunnan Province,Kunming 650500,China)
出处
《分子催化》
CAS
CSCD
北大核心
2022年第1期58-70,共13页
Journal of Molecular Catalysis(China)
基金
国家自然科学基金(4203000504)
云南省科技厅科技计划项目(202001AT070035)
云南省教育厅科学研究基金项目(2020J0060)
云南省基础研究计划项目(140520210099,140520210018)
云南省微纳材料与技术重点实验室开放课题资助
关键词
二氧化铈
氧缺陷
铈基催化剂
催化性能
催化剂载体
挥发性有机物
结构及形貌
cerium oxide(CeO_(2))
oxygen vacancies
cerium-based catalysts
catalytic performance
catalyst support
volatile organic compounds(VOCs)
structure and morphology
