文献类型：期刊文献

英文题名：Promotion effects of SiO2 or/and Al2O3 doped CeO2/TiO2 catalysts for selective catalytic reduction of NO by NH3

作者：Zhao, Wenru[1];Tang, Yu[1];Wan, Yaping[1];Li, Liang[1];Yao, Si[1];Li, Xiaowei[1];Gu, Jinlou[1];Li, Yongsheng[1];Shi, Jianlin[1,2]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat Minist Educ, Shanghai 200237, Peoples R China;[2]Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China

年份：2014

卷号：278

起止页码：350

外文期刊名：JOURNAL OF HAZARDOUS MATERIALS

收录：;EI(收录号：20142817919138);WOS:【SCI-EXPANDED(收录号:WOS:000340689100042)】；

基金：This study was financially supported by the National Key Basic Research Program of China (973 Program) (Grant no. 2013CB933201), the National Natural Science Foundation of China (Grant no. 21001043, 21073059 and 51372084), the Fundamental Research Funds for the Central Universities (Grant no. 222201313010), and the Nano-Special Foundation for Shanghai Committee of Science and Technology (Grant no. 12nm0502600).

语种：英文

外文关键词：CeO2/TiO2 catalyst; Selective catalytic reduction; Nitrogen oxide; SO2 durability

摘要：A series of the CeO2-based catalysts loaded on TiO2, TiO2-SiO2, TiO2-Al2O3, and TiO2-SiO2-Al2O3 supports were prepared by incipient impregnation method for the selective catalytic reduction (SCR) of NO by NH3 in the presence of oxygen. The SCR activities of the catalysts with different supports increases in the order of Ce/TiO2 < Ce/TiO2-20SiO(2) approximate to Ce/TiO2-3.5Al(2)O(3) < Ce/TiO2-20SiO(2)-3.5Al(2)O(3). The Ce/TiO2-20SiO(2)-3.5Al(2)O(3) catalyst showed 100% NO conversion in the temperature range of 250-425 degrees C and 100% N-2 selectivity in the whole temperature range. The catalytic activity of Ce/TiO2-20SiO(2)-3.5Al(2)O(3) exhibited good stability and strong resistance to SO2 and H2O poisoning. The co-introduction of SiO2 and Al2O3 into TiO2 could increase the amount of chemisorbed oxygen and Lewis acid sites on the surface of catalyst, which should be responsible for the excellent SCR activity. (C) 2014 Elsevier B.V. All rights reserved.