Experimental studies on syngas catalytic combustion on Pt/Al2O3 in a microreactor

被引：36

作者：

Federici, J. A.

Vlachos, D. G. ^{[1
]}

机构：

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

来源：

COMBUSTION AND FLAME | 2011年 / 158卷 / 12期

基金：

美国国家科学基金会;

关键词：

Hydrogen; Carbon monoxide; Synthesis gas; Catalytic combustion; Microreactor; Heterogeneous oxidation; WATER-GAS SHIFT; CO OXIDATION; H-2; OXIDATION; PLATINUM; FUEL; MICROBURNERS; MECHANISM; MIXTURES; HYDROGEN;

D O I：

10.1016/j.combustflame.2011.05.003

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Synthesis gas (a mixture of CO and H-2) oxidation is studied over a supported Pt/Al2O3 catalyst in a novel microreactor fabricated for studying the intrinsic chemical kinetics of highly exothermic reactions. CO was found to significantly inhibit H-2 oxidation. In contrast, H-2 addition promotes CO oxidation at low mole fractions but has a small promoting effect at high hydrogen mole fractions. As a result, the apparent reaction order of H-2 changes from positive to zero. The change in hydrogen reaction order is associated with hysteresis. Possible mechanisms for the observed behavior are discussed. (C) 2011 The Combustion Institute. Published by Elsevier Inc. All rights reserved.

引用

页码：2540 / 2543

页数：4