Sulphur dioxide deactivation of NOx storage catalysts

被引：0
|
作者：
Amberntsson, A
Westerberg, B
Engström, P
Fridell, E
Skoglundh, M [1 ]
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] Univ Gothenburg, SE-41296 Gothenburg, Sweden
[4] Chalmers Univ Technol, Dept Chem React Engn, SE-41296 Gothenburg, Sweden
来源：
CATALYST DEACTIVATION 1999 | 1999年 / 126卷
关键词：
D O I：
暂无
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The influence of sulphur dioxide on the NOx storage performance of a Pt-Rh/BaO/Al2O3 model catalyst has been investigated. Addition of 2.5-25 vol.-ppm SO2 to a synthetic lean-burn exhaust, containing NO, C3H6, O-2 and Ar, caused deactivation of the NOx storage function of the catalyst. The rate of deactivation was found to be proportional to the exposure of SO2. This effect is seen for temperatures between 250 and 450 degrees C. Together with in situ FTIR measurements, this leads to the conclusion that sulphur accumulates in the NOx storage component of the catalyst during the exposure. Furthermore, SO2 also inhibits the oxidation capacity of the catalyst during lean periods as is observed by a decreased NO oxidation activity. The presence of SO2 also reduces the reduction capacity of the catalyst under rich periods, which leads to an increased N2O formation and a decreased NO conversion.
引用
收藏
页码：317 / 324
页数：8
相关论文
共 50 条
  • [1] Model Studies of NOx Storage and Sulphur Deactivation of NOx Storage Catalysts
    Erik Fridell
    Hans Persson
    Louise Olsson
    Björn Westerberg
    Annika Amberntsson
    Magnus Skoglundh
    [J]. Topics in Catalysis, 2001, 16-17 : 133 - 137
  • [2] Model studies of NOx storage and sulphur deactivation of NOx storage catalysts
    Fridell, E
    Persson, H
    Olsson, L
    Westerberg, B
    Amberntsson, A
    Skoglundh, M
    [J]. TOPICS IN CATALYSIS, 2001, 16 (1-4) : 133 - 137
  • [3] Platinum oxidation and sulphur deactivation in NOx storage catalysts
    Erik Fridell
    Annika Amberntsson
    Louise Olsson
    Ann W. Grant
    Magnus Skoglundh
    [J]. Topics in Catalysis, 2004, 30-31 : 143 - 146
  • [4] Platinum oxidation and sulphur deactivation in NOx storage catalysts
    Fridell, E
    Amberntsson, A
    Olsson, L
    Grant, AW
    Skoglundh, M
    [J]. TOPICS IN CATALYSIS, 2004, 30-1 (1-4) : 143 - 146
  • [5] Sulphur dioxide interaction with NOx storage catalysts
    Engström, P
    Amberntsson, A
    Skoglundh, M
    Fridell, E
    Smedler, G
    [J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 1999, 22 (04) : L241 - L248
  • [6] Investigations of sulphur deactivation of NOx storage catalysts:: influence of sulphur carrier and exposure conditions
    Amberntsson, A
    Skoglundh, M
    Jonsson, M
    Fridell, E
    [J]. CATALYSIS TODAY, 2002, 73 (3-4) : 279 - 286
  • [7] Studies on the deactivation of NOx storage-reduction catalysts by sulfur dioxide
    Sedlmair, C
    Seshan, K
    Jentys, A
    Lercher, JA
    [J]. CATALYSIS TODAY, 2002, 75 (1-4) : 413 - 419
  • [8] Soot oxidation over NOx storage catalysts:: Activity and deactivation
    Krishna, K
    Makkee, M
    [J]. CATALYSIS TODAY, 2006, 114 (01) : 48 - 56
  • [9] Sulfur Deactivation of NOx Storage Catalysts: A Multiscale Modeling Approach
    Rankovic, N.
    Chizallet, C.
    Nicolle, A.
    Berthout, D.
    Da Costa, P.
    [J]. OIL & GAS SCIENCE AND TECHNOLOGY-REVUE D IFP ENERGIES NOUVELLES, 2013, 68 (06): : 995 - 1005
  • [10] Experimental studies of NOx storage catalysts: Preparation, characterisation, NOx regeneration and sulfur deactivation
    Department of Chemical and Biological Engineering, Chalmers University of Technology, Göteborg, Sweden
    不详
    [J]. Doktorsavh. Chalmers Tek. Hogsk., 2006, 2489 (1-57):
12345