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 50 条
  • [31] Catalytic oxidation of toluene over nanorod-structured Mn-Ce mixed oxides
    Liao, Yinnian
    Fu, Mingli
    Chen, Limin
    Wu, Junliang
    Huang, Bichun
    Ye, Daiqi
    CATALYSIS TODAY, 2013, 216 : 220 - 228
  • [32] Preparation of Mn-Ce/TiO2 Catalysts and its Selective Catalytic Reduction of NO at Low-temperature
    Fang, Jingrui
    Sun, Yong
    Ma, Tengkun
    Chen, Ge
    Wang, Lan
    4TH INTERNATIONAL CONFERENCE ON APPLIED MATERIALS AND MANUFACTURING TECHNOLOGY, 2018, 423
  • [33] Catalytic reduction of NO with decomposed methanol on alumina-supported Mn-Ce catalysts
    Spassova, I.
    Tsontcheva, T.
    Velichkova, N.
    Khristova, M.
    Nihtianova, D.
    JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2012, 374 : 267 - 277
  • [34] SELECTIVE CATALYTIC REDUCTION OF NITROGEN-OXIDES
    STRASZKO, J
    KALISIAK, B
    PRZEMYSL CHEMICZNY, 1988, 67 (07): : 323 - 325
  • [35] Catalytic activity of vanadium oxide catalysts prepared by electrodeposition for the selective catalytic reduction of nitrogen oxides with ammonia
    Kim, Su Hyo
    Cha, Jin Sun
    Jeon, Yoo Sang
    Park, Bum Chul
    Shin, Min-Chul
    Song, Jun-Kwang
    Kim, Young Keun
    REACTION KINETICS MECHANISMS AND CATALYSIS, 2016, 118 (02) : 633 - 641
  • [36] Catalytic activity of vanadium oxide catalysts prepared by electrodeposition for the selective catalytic reduction of nitrogen oxides with ammonia
    Su Hyo Kim
    Jin Sun Cha
    Yoo Sang Jeon
    Bum Chul Park
    Min-Chul Shin
    Jun-Kwang Song
    Young Keun Kim
    Reaction Kinetics, Mechanisms and Catalysis, 2016, 118 : 633 - 641
  • [37] Relationship between SO2 poisoning effects and reaction temperature for selective catalytic reduction of NO over Mn-Ce/TiO2 catalyst
    Jin, Ruiben
    Liu, Yue
    Wu, Zhongbiao
    Wang, Haiqiang
    Gu, Tingting
    CATALYSIS TODAY, 2010, 153 (3-4) : 84 - 89
  • [38] Ag modified Mn-Ce/γ-Al2O3 catalyst for selective catalytic reduction of NO with NH3 at low-temperature
    Cao, Fan
    Xiang, Jun
    Su, Sheng
    Wang, Pengying
    Hu, Song
    Sun, Lushi
    FUEL PROCESSING TECHNOLOGY, 2015, 135 : 66 - 72
  • [39] Molybdenum loaded on HZSM-50: A catalyst for selective catalytic reduction of nitrogen oxides
    Li, Z
    Xie, KC
    Huang, W
    Reschetilowski, W
    MOLECULAR SIEVES: FROM BASIC RESEARCH TO INDUSTRIAL APPLICATIONS, PTS A AND B, 2005, 158 : 1741 - 1748
  • [40] The catalytic selective reduction of nitrogen oxides on a Ru-MCM-41 type catalyst
    Apostolescu, N
    Iojoiu, EM
    REVISTA DE CHIMIE, 2003, 54 (07): : 566 - 568
12345