Low-temperature catalytic combustion of trichloroethylene over MnO_(x)-CeO_(2)mixed oxide catalysts  

作　　者：Kai Shen Mingxiang Jiang Xinwei Yang Weizhong Zhou Qiguang Dai Xingyi Wang Li Wang Yun Guo Yanglong Guo Wangcheng Zhan 

机构地区：[1]Key Laboratory for Advanced Materials,Research Institute of Industrial Catalysis,School of Chemistry and Molecular Engineering,East China University of Science and Technology,Shanghai 200237,China [2]Hudong Heavy Machinery Co.,Ltd.,Shanghai 200237,China

出　　处：《Journal of Rare Earths》2023年第4期523-530,共8页稀土学报（英文版）

基　　金：Project supported by the National Key Research and Development Program of China(2016YFC0204300);National Natural Science Foundation of China(21922602,22076047,21976057);Shanghai Rising-star Program(20QB1400400);Shanghai Science and Technology Innovation Action Plan(20dz12,04200);Fundamental Research Funds for the Central Universities。

摘　　要：The cerium-based catalysts were investigated for the catalytic co mbustion of trichlo roethylene(TCE)and exhibit a surprising catalytic activity.MnO_(x)was doped into CeO_(2)by a citric acid(CA)sol-gel method,and the effect of Mn content on the physicochemical properties and catalytic activities of MnO_(x)-CeO_(2)mixed oxides was investigated systemically.The introduction of MnO_(x)into CeO_(2)can evidently improve the catalytic activity and reaction stability of the CeO_(2)catalyst,and the catalytic activity can be maintained for more than 100 h at 250℃under air atmosphere.Moreover,a possible reaction mechanism and a catalytic cycle for the catalytic combustion of TCE over the MnO_(x)-CeO_(2)mixed oxide catalysts are proposed.

关 键 词：Catalytic combustion TRICHLOROETHYLENE Cerium oxide Manganese oxide Rare Earths 

分 类 号：X701[环境科学与工程—环境工程] O643.36[理学—物理化学]