Selective catalytic oxidation of CO in H2:: Fuel cell applications

被引：322

作者：

Korotkikh, O ^{[1
]}

Farrauto, R ^{[1
]}

机构：

[1] Engelhard Corp, Iselin, NJ 08830 USA

来源：

CATALYSIS TODAY | 2000年 / 62卷 / 2-3期

关键词：

selective oxidation of CO; fuel processing; PEM fuel cells; monolith; Pt catalyst;

D O I：

10.1016/S0920-5861(00)00426-0

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

An essential requirement for the proton exchange membrane (PEN) fuel cell is to deliver clean H-2 to the anode electrode, the kinetics of which are greatly hindered by traces of CO present from the upstream hydrocarbon steam reforming and water-gas shift processes. A technology receiving much attention is the selective oxidation of CO to CO2. Ideally the catalyst must selectively oxidize about 1% (10 000 ppm) CO to less than 5 ppm without oxidizing any of the 30-70% H-2 present. This paper describes performance results of a Pt promoted catalyst deposited on a monolith for selective oxidation of CO under simulated fuel processing conditions for PEM fuel cell applications. The effect of space velocity, gas composition and temperature on activity and selectivity is presented. Preliminary mechanism ideas are also presented. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：249 / 254

页数：6

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