文献类型：期刊文献

英文题名：MnOx-CeO2/activated carbon honeycomb catalyst for selective catalytic reduction of NO with NH3 at low temperatures

作者：Wang, Yanli[1]; Ge, Chuanzhang[1]; Zhan, Liang[1]; Li, Cui[1]; Qiao, Wenming[1]; Ling, Licheng[1]

机构：[1] State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China

年份：2012

卷号：51

期号：36

起止页码：11667

外文期刊名：Industrial and Engineering Chemistry Research

收录：EI(收录号：20123815456905)

语种：英文

外文关键词：Cerium oxide - Activated carbon - Catalyst supports - Honeycomb structures - Selective catalytic reduction - Reduction - Manganese oxide - Oxides

摘要：Activated carbon honeycomb supported manganese and cerium oxides (MnO x-CeO2/ACH) catalysts were investigated for selective catalytic reduction (SCR) of NO at low temperatures of 80-200 °C. Compared with ACH supported manganese oxide catalyst (MnOx/ACH), MnO x-CeO2/ACH catalysts show much higher SCR activity and higher selectivity to N2. NO conversion can be improved by the addition of CeO2 from less than 50% to 100% at 80-160 °C. The N2 selectivity of higher than 99.8% is obtained over the Ce(1)Mn/ACH catalyst at 80-200 °C. Results indicate that the addition of CeO2 improves the distribution of MnOx and enhances the oxidation of NO to NO2, producing more absorbed NO3- on the catalyst surface, which is then reduced into N2 by NH3. These behaviors account for the promoting effect of CeO2 on the SCR activity. ? 2012 American Chemical Society.