Kinetic modelling of Pt and Pt:Pd diesel oxidation catalysts

被引：30
作者：
Khosravi, M. [1 ]
Abedi, A. [2 ]
Hayes, R. E. [1 ]
Epling, W. S. [2 ,3 ,4 ]
Votsmeier, M. [5 ]
机构：
[1] Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB, Canada
[2] Univ Waterloo, Dept Chem Engn, Waterloo, ON N2L 3G1, Canada
[3] Univ Houston, Dept Chem Engn, Houston, TX USA
[4] Univ Houston, Dept Biomol Engn, Houston, TX USA
[5] Umicore, Automot Catalysis Div, Res & Dev, Hanau, Germany
来源：
APPLIED CATALYSIS B-ENVIRONMENTAL | 2014年 / 154卷
关键词：
Nitrous oxide; Propene; Oxidation; Reduction; CONVERTER LIGHTOFF;
D O I：
10.1016/j.apcatb.2014.02.001
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：
This paper describes an experimental and theoretical investigation of the oxidation of carbon monoxide, nitrogen monoxide and propene, and the reduction of nitrogen monoxide by propene over two diesel oxidation catalysts. Synthetic exhaust gas mixtures are used. The catalysts were commercial monolith samples of 400 CPSI with a total PGM loading of 95 gift(3). One monolith had platinum catalyst only, and the other was a bimetallic catalyst of 4:1 by mass platinum and palladium. The bimetallic catalyst was more active, and showed a different behaviour for propene oxidation than the Pt only catalyst. Global kinetic models for the oxidation of CO, C3H6, and NO, and the selective catalytic reduction of NO to N-2 and N2O are developed. A good agreement between experimental results and simulation is observed. (c) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：16 / 26
页数：11
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