摘要
Ce是一种用途十分广泛的稀土金属,其丰度也是稀土元素中最高的。其金属氧化物CeO_(2)由于具有优异的储放氧性能,其晶格中存在的大量氧空位可以直接作为活性位点,能够捕捉气相中的O_(2),产生大量的活性氧物种,表现出良好的催化性能,在各催化体系中作为载体和活性组分被普遍使用。分别从CeO_(2)独特的氧空位性质,CeO_(2)氧空位的形成途径,氧空位的表征技术以及氧空位在催化反应中的作用等方面的最新研究进展进行了综述。最后对CeO_(2)氧空位在氧化还原、有机物污染降解等反应过程中的应用进行了总结和展望。
Cerium is a widely used rare earth metal with the highest abundance of rare earth elements.At present,its metal oxide cerium oxide(CeO_(2))is commonly used as a carrier and active component in various catalytic systems due to its excellent oxygen storage and release properties,and lots of oxygen vacancies in its lattice can be used directly as active sites to capture oxygen in the gas phase and generate a large quantity of active oxygen species,exhibiting good catalytic properties.This paper reviews the latest research progress in the unique oxygen vacancies properties of CeO_(2),the pathway of CeO_(2) oxygen vacancies generation,the characterization techniques of oxygen vacancies and the role of oxygen vacancies in catalytic reactions,respectively.Finally,the applications of CeO_(2) oxygen vacancies in Redox,organic pollution degradation and other reactions are summarized.
作者
张迎
朱文杰
张黎明
高晓亚
罗永明
陆继长
Zhang Ying;Zhu Wenjie;Zhang Liming;Gao Xiaoya;Luo Yongming;Lu Jichang(College of Envi-ronmental Science and Engineering,Kunming University of Science and Technology,Innovation Team of Yunnan Province in VOCs Pollution Prevention and Recycling,Yunnan Province Key Labora-tory for Controlling Malodorous Volatile Organic Compounds,Kunming 650500,China)
出处
《中国稀土学报》
EI
CAS
CSCD
北大核心
2022年第1期14-23,I0001,共11页
Journal of the Chinese Society of Rare Earths
基金
国家自然科学基金项目(42030712)
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(2020KFJJ01)资助。
关键词
CeO_(2)
铈基催化剂
氧空位
表征技术
催化性能
cerium oxide(CeO_(2))
cerium-based catalysts
oxygen vacancies
characterization techniques
catalytic performance
