Modeling the simultaneous oxidation of CO and H2 on Pt - Promoting effect of H2 on the CO-light-off

被引：43

作者：

Hauptmann, W. ^{[1
,2
]}

Votsmeier, M. ^{[1
]}

Vogel, H. ^{[2
]}

Vlachos, D. G. ^{[3
,4
]}

机构：

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

[2] Tech Univ Darmstadt, Ernst Berl Inst Tech & Makromol, D-64287 Darmstadt, Germany

[3] Univ Delaware, Dept Chem Engn, Newark, DE 19716 USA

[4] Univ Delaware, Ctr Catalyt Sci & Technol, Newark, DE 19716 USA

来源：

APPLIED CATALYSIS A-GENERAL | 2011年 / 397卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

CO oxidation; H-2; oxidation; Promotion; Pt; Microkinetic model; Light-off; Carboxyl-path; SURFACE-REACTION MECHANISMS; WATER-GAS SHIFT; CARBON-MONOXIDE; CATALYTIC-OXIDATION; PT(111) SURFACE; INFRARED-SPECTROSCOPY; PT/AL2O3; CATALYST; MOLECULAR-BEAM; PLATINUM; ADSORPTION;

D O I：

10.1016/j.apcata.2011.02.031

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：

A microkinetic model is developed to simulate the promoting effect of H-2 on the light-off of CO oxidation on platinum. It is shown that the coupling of the CO and the H-2 oxidation sub-mechanisms, via the hydroxyl intermediate and its reaction with CO to carboxyl, is crucial to describe the process. This carboxyl-path was not considered in previous modeling studies. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：174 / 182

页数：9

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