文献类型：期刊文献

英文题名：Elimination of 1,2-dichloroethane over (Ce,Cr)(x)O-2/MOy catalysts (M =Ti, V, Nb, Mo, W and La)

作者：Yang, Peng[1];Zuo, Shufeng[2];Shi, Zhinan[1];Tao, Fei[1];Zhou, Renxian[1]

机构：[1]Zhejiang Univ, Inst Catalysis, Hangzhou 310028, Zhejiang, Peoples R China;[2]Shaoxing Univ, Zhejiang Key Lab Alternat Technol Fine Chem Proc, Shaoxing 312000, Peoples R China

年份：2016

卷号：191

起止页码：53

外文期刊名：APPLIED CATALYSIS B-ENVIRONMENTAL

收录：SCI-EXPANDED(收录号：WOS:000375518000006)、、WOS

基金：The financial support from Nature Science Foundation of China (No. 21477109) is gratefully acknowledged.

语种：英文

外文关键词：Total oxidation; Chlorinated VOCs; Durability; Mixed oxide; Promoted effect

外文摘要：(Ce,Cr)(x)O-2/MOy (M=Ti, V, Nb, Mo, W, La, respectively) mixed oxides are synthesized by deposition precipitation method, and evaluated for total oxidation of gaseous 1,2-dichloroethane, a typical chlorinated organic pollutant. The characterization results show that there exists strong metal-support interaction or synergistic effect between (Ce,Cr)(x)O-2 and MOy. The catalytic performances of these catalysts can be related to the nature of each MOy support, the crystal structure and composition, the surface elements distribution and the diverse redox properties of (Ce,Cr)(x)O-2/MOy. The improved redox property, as well as the increased content of Ce3+ and Cr6+ species on the surface can enhance the catalytic performances of the catalysts. Especially, (Ce,Cr)(x)O-2/Nb2O5 exhibits the best catalytic performance. (Ce,Cr)(x)O-2/Nb2O5 also represents high durability for 1,2-dichloroethane oxidation during the long-term continuous test. Moreover, though the presence of water or benzene in the reaction system slightly suppresses 1,2-dichloroethane oxidation, the catalytic activity can be recovered by the cut of water, while a little deactivation is found if benzene is removed away, since coke has been deposited on the catalyst surface by the combustion of benzene. (C) 2016 Elsevier B.V. All rights reserved.