文献类型：期刊文献

英文题名：MnO_x-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]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2012

卷号：51

期号：36

起止页码：11667

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000308575300011)】；

基金：We thank the National Natural Science Foundation of China (51002051, 20806024, 50730003 and 50672025), the Natural Science Foundation of Shanghai City (12ZR1407200), and Fundamental Research Funds for the Central Universities (WA1014016) for financial support.

语种：英文

摘要：Activated carbon honeycomb supported manganese and cerium oxides (MnOx-CeO2/ACH) catalysts were investigated for selective catalytic reduction (SCR) of NO at low temperatures of 80-200 degrees C. Compared with ACH supported manganese oxide catalyst (MnOx/ACH), MnOx-CeO2/ACH catalysts show much higher SCR activity and higher selectivity to N-2. NO conversion can be improved by the addition of CeO2 from less than 50% to 100% at 80-160 degrees C. The N-2 selectivity of higher than 99.8% is obtained over the Ce(1)Mn/ACH catalyst at 80-200 degrees 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 N-2 by NH3. These behaviors account for the promoting effect of CeO2 on the SCR activity.