Kinetic studies of methanol steam reforming over Pd/ZnO catalyst using a microchannel reactor

被引：101

作者：

Cao, CS ^{[1
]}

Xia, G ^{[1
]}

Holladay, J ^{[1
]}

Jones, E ^{[1
]}

Wang, Y ^{[1
]}

机构：

[1] Pacific NW Natl Lab, Richland, WA 99352 USA

来源：

APPLIED CATALYSIS A-GENERAL | 2004年 / 262卷 / 01期

关键词：

kinetics; methanol steam reforming; microchannel reactor; Pd/ZnO catalyst;

D O I：

10.1016/j.apcata.2003.11.043

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 microchannel reactor with effective heat exchange has been developed to evaluate catalyst performance and measure reaction kinetics. The reactor provides an isothermal environment for rate measurement of the endothermic methanol steam reforming reactions over a Pd/ZnO catalyst in a wide temperature range ( 160-310degreesC). The apparent activation energy and rate equation have been determined to fit the power law expression: -r(A)(mmol/kg(cat)/s) = 2.9047 x 10(10)e-(94800/RT) p(MeOH)(0.715) p(H2O)(0.088) This result provides kinetic data for the design of a miniature fuel processor for small fuel cell applications. The rate equation has been applied to a three-dimensional pseudo-hoino.-eneous model to simulate temperature profiles in both microchannel and conventional fixed bed reactors. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：19 / 29

页数：11

共 19 条

[1] Kinetic studies using temperature-scanning: the steam-reforming of methanol [J].