Model studies of NOx storage and sulphur deactivation of NOx storage catalysts

被引：84
|
作者：
Fridell, E [1 ]
Persson, H
Olsson, L
Westerberg, B
Amberntsson, A
Skoglundh, M
机构：
[1] Chalmers Univ Technol, Competence Ctr Catalysis, SE-41296 Gothenburg, Sweden
[2] Chalmers Univ Technol, Dept Appl Phys, SE-41296 Gothenburg, Sweden
[3] Chalmers Univ Technol, Dept Chem React Engn, SE-41296 Gothenburg, Sweden
[4] Chalmers Univ Technol, Dept Surface Chem, SE-41296 Gothenburg, Sweden
来源：
TOPICS IN CATALYSIS | 2001年 / 16卷 / 1-4期
关键词：
NOx reduction; lean-burn; NOx storage; sulphur deactivation; storage mechanism;
D O I：
10.1023/A:1016699202043
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The storage of NOx under lean conditions in model NOx storage catalysts as well as the deactivation by sulphur have been studied. We find that NO2 plays an important role in the storage mechanism as an oxidising agent. Two different mechanisms for this are discussed: the formation of surface peroxides and the oxidation of nitrites to nitrates, FTIR studies show that NOx is stored as surface nitrates, The sulphur deactivation is found to be more severe when SO2 is added during the rich phase than when SO2 is added during the lean period. FTIR shows the formation of bulk sulphates both under lean and rich conditions.
引用
收藏
页码：133 / 137
页数：5
相关论文
共 50 条
  • [41] A comparison between Pt and Pd in NOx storage catalysts
    Salasc, S
    Skoglundh, M
    Fridell, E
    APPLIED CATALYSIS B-ENVIRONMENTAL, 2002, 36 (02) : 145 - 160
  • [42] NOx Storage-Reduction Catalysts for Gasoline Engines
    Masahiko Takeuchi
    Shin'ichi Matsumoto
    Topics in Catalysis, 2004, 28 : 151 - 156
  • [43] NOx storage-reduction catalysts for gasoline engines
    Takeuchi, M
    Matsumoto, S
    TOPICS IN CATALYSIS, 2004, 28 (1-4) : 151 - 156
  • [44] Fundamental studies of NOx storage at low temperatures
    Olsson, Louise
    Jozsa, Peter
    Nilsson, Mikael
    Jobson, Edward
    TOPICS IN CATALYSIS, 2007, 42-43 (1-4) : 95 - 98
  • [45] Fundamental studies of NOx storage at low temperatures
    Louise Olsson
    Peter Jozsa
    Mikael Nilsson
    Edward Jobson
    Topics in Catalysis, 2007, 42-43 : 95 - 98
  • [46] UV and visible Raman study of thermal deactivation in a NOx storage catalyst
    Uy, D
    O'Neill, AE
    Li, J
    Watkins, WLH
    CATALYSIS LETTERS, 2004, 95 (3-4) : 191 - 201
  • [47] The mechanism for NOx storage
    Fridell, E
    Persson, H
    Westerberg, B
    Olsson, L
    Skoglundh, M
    CATALYSIS LETTERS, 2000, 66 (1-2) : 71 - 74
  • [48] UV and Visible Raman Study of Thermal Deactivation in a NOx Storage Catalyst
    Dairene Uy
    Ann E. O'Neill
    John Li
    William L.H. Watkins
    Catalysis Letters, 2004, 95 : 191 - 201
  • [49] Model study of NOx storage catalysts for lean-burn exhaust.
    Fridell, E
    Skoglundh, M
    Persson, H
    Westerberg, B
    Olsson, L
    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 2000, 219 : U532 - U532
  • [50] Modelling of NOx Storage
    Chatterjee, Daniel
    Koci, Petr
    Schmeisser, Volker
    Marek, Milos
    Weibel, Michel
    SAE INTERNATIONAL JOURNAL OF FUELS AND LUBRICANTS, 2010, 3 (01) : 500 - 522
12345