High activity of CeO2-TiO2 composites for deep oxidation of 1,2-dichloroethane  

作　　者：Jialu Wang Zhinan Shi Renxian Zhou 

机构地区：[1]Institute of Catalysis,Zhejiang University,Hangzhou 310028,PR China

出　　处：《Journal of Rare Earths》2020年第8期906-911,I0003,共7页稀土学报（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(21477109);National Key Research and Development Program of China(2016YFC0204300)。

摘　　要：CeO2-TiO2 catalysts prepared by different methods were investigated for deep oxidation of 1,2-dichloroethane(DCE),as a typical representative of the chlorinated volatile organic compounds(CVOCs).Characterization analysis reveals that CeO2-TiO2 catalysts prepared by sol-gel and coprecipitation methods exhibit higher specific area,CeO2 and TiO2 particles are highly dispersed into each other and the reducibility and mobility of active oxygen species are obviously promoted due to the strong interaction between the two catalysts CeO2 and TiO2,resulting in higher catalytic activity for DCE oxidation to and less chlorinated byproduct.The high calcination temperature would lead to the formation of a new monoclinic phase Ce0.3Ti0.7O2 and sintering,which is the main reason for the catalytic activity for DCE oxidation markedly decreases.

关 键 词：CeO2-TiO2 catalysts Synergism Chlorinated VOCs Catalytic oxidation Rare earths 

分 类 号：X701[环境科学与工程—环境工程] TB33[一般工业技术—材料科学与工程]