Partial oxidation of methanol at millisecond contact times

被引：33

作者：

Traxel, BE ^{[1
]}

Hohl, KL ^{[1
]}

机构：

[1] Kansas State Univ, Dept Chem Engn, Manhattan, KS 66506 USA

来源：

APPLIED CATALYSIS A-GENERAL | 2003年 / 244卷 / 01期

关键词：

methanol; partial oxidation; hydrogen production; millisecond contact time reactor;

D O I：

10.1016/S0926-860X(02)00570-7

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：

The partial oxidation of methanol has been carried out on Pt- and Rh-coated alpha-alumina monoliths in an autothermal, short contact time reactor. This is seen as a possible first step in converting methanol to hydrogen for use in fuel cells for mobile applications. Methanol was readily converted to primarily CO and H-2 at CH3OH/O-2 ratios from two to five. Higher ratios produced lower temperatures, lower methanol conversions, and higher H-2 selecitivities. CO selectivity on both catalysts increased from CH3OH/O-2 = 2 to 3-3.5, but decreased beyond this ratio. This was attributed to the water-gas shift reaction where equilibrium of this reaction becomes more favorable at higher ratios due to the decrease in reaction temperature. Platinum and rhodium gave very similar trends, suggesting that thermodynamic equilibrium, not catalyst properties, determines product composition. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：129 / 140

页数：12

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