Kinetic study of iso-octane steam reforming over a nickel-based catalyst

被引：30

作者：

Adesina, PAA

Trimm, DL ^{[1
]}

Cant, NW

机构：

[1] Univ New S Wales, Sch Chem Engn & Ind Chem, Sydney, NSW 2052, Australia

[2] Macquarie Univ, Dept Chem, Sydney, NSW 2109, Australia

来源：

CHEMICAL ENGINEERING JOURNAL | 2004年 / 99卷 / 02期

关键词：

gasoline; iso-octane; kinetic; nickel; steam reforming;

D O I：

10.1016/j.cej.2003.10.002

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The kinetics of iso-octane steam reforming over a nickel based catalyst has been examined as a function of iso-octane and steam partial pressures at various temperatures. The reaction order is 0.2 with respect to iso-octane, suggesting strong coverage of nickel by iso-octane and 0.5 with respect to steam, indicating dissociative adsorption of steam. Indeed, a Langmuir-Hinshelwood (LH) mechanism requiring the dissociative adsorption of iso-octane and steam on two different sites appeared to be the most plausible pathway for the steam reforming reaction. The activation energy of 44 +/- 2.2 kJ mol(-1) estimated from the LH model is consistent with the trend previously reported for other lower hydrocarbons. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：131 / 136

页数：6

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