文献类型：期刊文献

英文题名：Catalytic combustion of chlorobenzene over Mn-Ce-La-O mixed oxide catalysts

作者：Dai Yu[1];Wang Xingyi[1];Li Dao[1];Dai Qiguang[1]

机构：[1]E China Univ Sci & Technol, Adv Mat Lab, Res Inst Ind Catalysis, Shanghai 200237, Peoples R China

年份：2011

卷号：188

期号：1-3

起止页码：132

外文期刊名：JOURNAL OF HAZARDOUS MATERIALS

收录：;EI(收录号：20111113747372);WOS:【SCI-EXPANDED(收录号:WOS:000289334300019)】；

基金：We would like to acknowledge the financial support from National Basic Research Program of China (no. 2010CB732300) and National Natural Science Foundation of China (no. 20977029).

语种：英文

外文关键词：Chlorobenzene; MnOx; La2O3; CeO2; Catalytic combustion

摘要：A series of Mn(x)-CeLa mixed oxide catalysts with different compositions prepared by sol-gel method were tested for the catalytic combustion of chlorobenzene (CB), as a model of chlorinated aromatics. Mn(x)-CeLa catalysts with the ratios of Mn/(Mn + Ce + La) in the range from 0.69 to 0.8 were found to possess high catalytic activity in the catalytic combustion of CB. The stability and deactivation of Mn(x)-CeLa catalysts were studied by other assistant experiments. Mn(x)-CeLa catalysts can deactivate below 330 degrees C, due to the strong adsorption of Cl species produced during the decomposition of CB. Nevertheless, the increase in oxygen concentration can enhance the resistance to Cl poisoning through the reaction of surface oxygen species with residual chlorine. At 350 degrees C, high activity, good selectivity and desired stability were observed over Mn(x)-CeLa catalysts. (C) 2011 Elsevier B.V. All rights reserved.