A new simulation model for NOx storage catalyst dynamics

被引：26

作者：

Tuttlies, U ^{[1
]}

Schmeisser, V ^{[1
]}

Eigenberger, G ^{[1
]}

机构：

[1] Univ Stuttgart, Inst Chem Verfahrenstech, D-70199 Stuttgart, Germany

来源：

TOPICS IN CATALYSIS | 2004年 / 30-1卷 / 1-4期

关键词：

NOx reduction; NOx storage; kinetic modelling;

D O I：

10.1023/B:TOCA.0000029748.54964.fe

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The NOx storage concept has been studied experimentally and by two differently detailed numerical simulation models. The first detailed model simulates the concentration fronts of the solid components in the barium particles. It shows the slow, diffusion-hindered formation of dense nitrate layers around barium nanoparticles during NOx storage and their rapid break-tip during regeneration. Based upon this knowledge a new simplified model was developed which is able to describe well the storage and regeneration and to explain the main chemical and physical processes in the NOx storage catalyst.

引用

页码：187 / 192

页数：6

共 11 条

[1] Transient surface processes of storage and conversion of NOx species on Pt-Me/Al2O3 catalysts (Me = Ba, Ce, Cu) [J].

Arena, GE ;

Bianchini, A ;

Centi, G ;

Vazzana, F .

TOPICS IN CATALYSIS, 2001, 16 (1-4) :157-164

[2] Removal of nitrogen oxides from the exhaust of a lean-tune gasoline engine [J].

Bogner, W ;

Kramer, M ;

Krutzsch, B ;

Pischinger, S ;

Voigtlander, D ;

Wenninger, G ;

Wirbeleit, F ;

Brogan, MS ;

Brisley, RJ ;

Webster, DE .

APPLIED CATALYSIS B-ENVIRONMENTAL, 1995, 7 (1-2) :153-171

[3] The storage of nitrogen oxides on alumina-supported barium oxide [J].

Cant, NW ;

Patterson, MJ .

CATALYSIS TODAY, 2002, 73 (3-4) :271-278

[4] The mechanism for NOx storage [J].

Fridell, E ;

Persson, H ;

Westerberg, B ;

Olsson, L ;

Skoglundh, M .

CATALYSIS LETTERS, 2000, 66 (1-2) :71-74

[5]

GLUCK KH, 2000, MTZ, V61, P6

[6]

KERSKES H, 2001, THESIS U STUTTGART

[7]

KREBS R, 2000, 9 AACH K FAHRZ MOT

[8] NOx storage reduction over Pt-Ba/γ-Al2O3 catalyst [J].

Lietti, L ;

Forzatti, P ;

Nova, I ;

Tronconi, E .

JOURNAL OF CATALYSIS, 2001, 204 (01) :175-191

[9]

MIYOSHI N, 1995, 950809 SAE, P63

[10] Mean field modelling of NOx storage on Pt/BaO/Al2O3 [J].

Olsson, L ;

Fridell, E ;

Skoglundh, M ;

Andersson, B .

CATALYSIS TODAY, 2002, 73 (3-4) :263-270

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