Low temperature selective catalytic reduction of NOx with NH3 over amorphous MnOx catalysts prepared by three methods

被引：267
作者：
Tang, Xiaolong
Hao, Jiming [1 ]
Xu, Wenguo
Li, Junhua
机构：
[1] Tsinghua Univ, Dept Environm Sci & Engn, Beijing 100084, Peoples R China
[2] Beijing Inst Technol, Inst Phys Chem, Beijing 100081, Peoples R China
来源：
CATALYSIS COMMUNICATIONS | 2007年 / 8卷 / 03期
基金：
中国国家自然科学基金;
关键词：
selective catalytic reduction; low temperature; NO; ammonia; MnOx;
D O I：
10.1016/j.catcom.2006.06.025
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Unsupported manganese oxide catalysts with amorphous phase were prepared by three methods, and their activities for SCR of NO, with ammonia were investigated in the presence of O-2. The results showed the catalysts have superior low temperature activity, and the NO, conversion is about 98% at 80 degrees C, and nearly 100% NOx conversion between 100 and 150 degrees C. Due to competing adsorption with the reactant, H2O has slight impact on the activity. The activity was suppressed with coexisting of SO2, however the deactivation of SO2 is reversible. The excellent low temperature catalytic activity of amorphous MnOx catalysts is mainly due to their amorphous phase and high specific areas. (c) 2006 Elsevier B.V. All rights reserved.
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收藏
页码：329 / 334
页数：6
相关论文
共 15 条
[1]   Cu-Mn mixed oxides for low temperature NO reduction with NH3 [J].
Kang, M ;
Park, ED ;
Kim, JM ;
Yie, JE .
CATALYSIS TODAY, 2006, 111 (3-4) :236-241
[2]   Novel MnOx catalysts for NO reduction at low temperature with ammonia [J].
Kang, M ;
Yeon, TH ;
Park, ED ;
Yie, JE ;
Kim, JM .
CATALYSIS LETTERS, 2006, 106 (1-2) :77-80
[3]   Identification, stability, and reactivity of NOx species adsorbed on titania-supported manganese catalysts [J].
Kantcheva, M .
JOURNAL OF CATALYSIS, 2001, 204 (02) :479-494
[4]   ACTIVITY AND SELECTIVITY OF PURE MANGANESE OXIDES IN THE SELECTIVE CATALYTIC REDUCTION OF NITRIC-OXIDE WITH AMMONIA [J].
KAPTEIJN, F ;
SINGOREDJO, L ;
ANDREINI, A ;
MOULIJN, JA .
APPLIED CATALYSIS B-ENVIRONMENTAL, 1994, 3 (2-3) :173-189
[5]   Mechanism of the selective catalytic reduction of NO by NH3 over MnOx/Al2O3 .2. Reactivity of adsorbed NH3 and NO complexes [J].
Kijlstra, WS ;
Brands, DS ;
Smit, HI ;
Poels, EK ;
Bliek, A .
JOURNAL OF CATALYSIS, 1997, 171 (01) :219-230
[6]   Low-temperature SCR of NOx with NH3 over Nomex™ rejects-based activated carbon fibre composite-supported manganese oxides Part I.: Effect of pre-conditioning of the carbonaceous support [J].
Marbán, G ;
Fuertes, AB .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2001, 34 (01) :43-53
[7]   Selective catalytic reduction of nitrogen oxides with NH3 over natural manganese ore at low temperature [J].
Park, TS ;
Jeong, SK ;
Hong, SH ;
Hong, SC .
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2001, 40 (21) :4491-4495
[8]  
QI G, 2003, CATAL LETT, V87, P217
[9]   Performance and kinetics study for low-temperature SCR of NO with NH3 over MnOx-CeO2 catalyst [J].
Qi, GS ;
Yang, RT .
JOURNAL OF CATALYSIS, 2003, 217 (02) :434-441
[10]  
Qi R., 2003, APPL CATAL B-ENVIRON, V44, P217
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