Global kinetic models for the oxidation of NO on platinum under lean conditions

被引：24

作者：

Hauptmann, W.

Drochner, A.

Vogel, H.

Votsmeier, M.

Gieshoff, J.

机构：

[1] Tech Univ Darmstadt, Dept Tech Chem & Macromol Sci, D-64287 Darmstadt, Germany

[2] Umicore AG & Co KG, D-63403 Hanau, Germany

来源：

TOPICS IN CATALYSIS | 2007年 / 42-43卷 / 1-4期

关键词：

diesel exhaust; NO oxidation; platinum; global model; monolithic catalyst;

D O I：

10.1007/s11244-007-0170-6

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Different global kinetics for the oxidation of NO on platinum are compared in this work. The general form of the equation for the reaction rate is r = k center dot c(NO)(alpha) center dot c(O2)(beta) center dot c(NO2)(gamma) center dot TD delta with TD (1 - c(NO2) center dot c(NO)(-1) center dot c(O2)(-0.50) center dot K-1). Furthermore steady- state and temperatureprogrammed experiments were performed. The best results of simulation coupled with parameter estimation were obtained using alpha = 0.28, beta = 0.49, gamma = 0 and delta = 1, along with an activation energy of 47.5 kJ mol(-1).

引用

页码：157 / 160

页数：4

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