Mn-Ce/beta "bifunctional" catalyst for the selective catalytic reduction of nitrogen oxides with ammonia

被引：15
作者：
Krivoruchenko, D. S. [1 ]
Telegina, N. S. [1 ]
Bokarev, D. A. [1 ]
Stakheev, A. Yu. [1 ]
机构：
[1] Russian Acad Sci, Zelinsky Inst Organ Chem, Moscow 119991, Russia
来源：
KINETICS AND CATALYSIS | 2015年 / 56卷 / 06期
基金：
俄罗斯基础研究基金会;
关键词：
bimetallic catalysts; Mn; Ce; SCR; zeolite catalyst; LOW-TEMPERATURE SCR; NO REDUCTION; COMPLETE OXIDATION; SUPERIOR CATALYST; MANGANESE OXIDES; MNOX-CEO2; NH3; COMBUSTION; MECHANISM; KINETICS;
D O I：
10.1134/S0023158415060051
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：
The properties of the Mn-Ce/Beta zeolite catalyst in the selective catalytic reduction (SCR) of NOx have been investigated. The introduction of Ce leads to a marked increase in the NO (x) conversion at 100-250 degrees C. The data of this study are consistent with the "bifunctional" pathway of SCR suggested for Mn/Beta, which consists of two stages-NO oxidation to NO2 over the oxide component and "fast" SCR over the zeolite. The increased activity of Mn-Ce/Beta at the NO-to-NO2 oxidation stage is due to the formation of MnCeO (x) mixed oxides enhancing the mobility of lattice oxygen. The determining role is played by the activity of the zeolite component in the "fast" SCR reaction.
引用
收藏
页码：741 / 746
页数：6
相关论文
共 41 条
  • [1] Bosch H., 1988, Catalysis Today, V2, P369, DOI [DOI 10.1016/B978-0-444-98919-2.50005-3, DOI 10.1016/0920-5861(88)80002-6, 10.1016/0920-5861(88)80002-6]
  • [2] The activity and mechanism study of Fe-Mn-Ce/γ-Al2O3 catalyst for low temperature selective catalytic reduction of NO with NH3
    Cao, Fan
    Su, Sheng
    Xiang, Jun
    Wang, Pengying
    Hu, Song
    Sun, Lushi
    Zhang, Anchao
    [J]. FUEL, 2015, 139 : 232 - 239
  • [3] Mn-Ce/ZSM5 as a new superior catalyst for NO reduction with NH3
    Carja, Gabriela
    Kameshima, Yoshikazu
    Okada, Kiyoshi
    Madhusoodana, Changalla D.
    [J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 2007, 73 (1-2) : 60 - 64
  • [4] VOC oxidation over MnOx-CeO2 catalysts prepared by a combustion method
    Delimaris, Dimitrios
    Ioannides, Theophilos
    [J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 2008, 84 (1-2) : 303 - 312
  • [5] Direct NO decomposition over a Ce-Mn mixed oxide modified with alkali and alkaline earth species and CO2-TPD behavior of the catalysts
    Hong, Won-Jong
    Iwamoto, Shinji
    Inoue, Masashi
    [J]. CATALYSIS TODAY, 2011, 164 (01) : 489 - 494
  • [6] Kinetics of selective catalytic reduction of NO with NH3 on Fe-ZSM-5 catalyst
    Huang, HY
    Long, RQ
    Yang, RT
    [J]. APPLIED CATALYSIS A-GENERAL, 2002, 235 (1-2) : 241 - 251
  • [7] Kijlstra WS, 1999, CATAL TODAY, V50, P133
  • [8] Development of the bifunctional catalyst Mn-Fe-Beta for selective catalytic reduction of nitrogen oxides
    Krivoruchenko, D. S.
    Kucherov, A. V.
    Telegina, N. S.
    Bokarev, D. A.
    Selvam, P.
    Stakheev, A. Yu.
    [J]. RUSSIAN CHEMICAL BULLETIN, 2014, 63 (02) : 389 - 395
  • [9] On the nature of different iron sites and their catalytic role in Fe-ZSM-5 DeNOx catalysts:: new insights by a combined EPR and UV/VIS spectroscopic approach
    Kumar, MS
    Schwidder, M
    Grünert, W
    Brückner, A
    [J]. JOURNAL OF CATALYSIS, 2004, 227 (02) : 384 - 397
  • [10] Catalytic combustion of VOCs on non-noble metal catalysts
    Li, W. B.
    Wang, J. X.
    Gong, H.
    [J]. CATALYSIS TODAY, 2009, 148 (1-2) : 81 - 87
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