重庆工商大学学报（自然科学版）2024，Vol.41Issue(1)：12-20,9.DOI:10.16055/j.issn.1672-058X.2024.0001.002
稀土催化剂(Ce、La)用于丙烷催化燃烧的研究进展
Advances in Rare Earth Element-based Catalysts(Ce,La)for Propane Catalytic Combustion
摘要
Abstract
Objective Volatile organic compounds(VOCs)have adverse effects on both human health and the ecological environment,thus attracting widespread attention from researchers.Catalytic combustion is one of the effective technologies for treating VOCs,with the advantages of high removal efficiency and no secondary pollution.Rare earth elements such as Ce and La and their oxides often play an important role in catalytic combustion due to their special physicochemical properties as catalytic additives or carriers.Therefore,for rare earth catalysts(mainly Ce and La),their applications in the propane catalytic combustion and the corresponding catalytic reaction mechanisms as well as future development directions were reviewed.Methods Through a review of the research and applications of Ce-based and La-based catalysts in the propane catalytic combustion,the reaction mechanisms and development directions of rare earth catalysts were analyzed.Results Firstly,Ce,La,and their oxides modulated the physical properties of the catalyst such as the overall structure,morphology,and specific surface area.Meanwhile,these substances also interacted with other metals within the catalyst to effectively modulate the oxygen vacancy density in the material,ultimately enhancing the reactivity for the propane catalytic combustion.Secondly,when CeO2 acted as a carrier,it was capable of producing metal-CeO2 interactions with the active metal dependent on the CeO2 morphology and crystallographic surface,which can have a great impact on the structure and performance of the catalyst.Studies on the application of La-based chalcogenide catalysts obtained by optimizing synthesis methods and surface modification in the propane catalytic combustion were also discussed.Conclusion At present,the exploration of the catalytic mechanism of rare earth-based catalysts is still in its initial stage,and in-depth and systematic research should be conducted to realize its industrial application as early as possible.关键词
多相催化/催化燃烧/丙烷/稀土元素Key words
heterogeneous catalysis/catalytic combustion/propane/rare-earth elements分类
资源环境引用本文复制引用
龚旭栋,王玮璐,吴云,张贤明..稀土催化剂(Ce、La)用于丙烷催化燃烧的研究进展[J].重庆工商大学学报（自然科学版）,2024,41(1):12-20,9.基金项目
国家自然科学基金资助项目(51678095) （51678095）
重庆市科委面上项目(CSTC2021JCYJ-MSXMX0628). （CSTC2021JCYJ-MSXMX0628）
