High-temperature Water-Gas Shift catalysts for hydrogen enrichment of a gas produced by biomass steam gasification

被引:11
|
作者
Lang, Charlotte [1 ]
Secordel, Xavier [1 ]
Zimmermann, Yvan [1 ]
Kiennemann, Alain [1 ]
Courson, Claire [1 ]
机构
[1] Univ Strasbourg, ICPEES, Equipe Energie & Carburants Environm Durable, ECPM,CNRS,UMR 7515, F-67087 Strasbourg 2, France
关键词
Hydrogen; Water-Gas Shift; Iron catalyst; Ceria; Ceramic foams; PRESSURE-DROP; CO OXIDATION; CERIA; IRON; SULFUR; RATIOS; OXIDES; FE/CE; XPS; RH;
D O I
10.1016/j.crci.2014.12.004
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
To improve the hydrogen content of a biomass steam gasification syngas, Water-Gas Shift Fe/CeO2 catalysts supported on ceramic foams were developed. The impregnation of ceria as washcoat led to an increase in the support surface area (BET) and to the formation of well-dispersed iron particles (XRD and TPR) by iron oxide impregnation. Catalytic tests were performed at atmospheric pressure with minor pressure drops, under a gas mixture similar to that produced at the gasifier outlet. A satisfactory CO conversion and a large increase in H-2 content were reached by adjusting the operating parameters of the WGS and the catalysts' composition. After-test characterizations indicated in situ catalysts activation with no over-reduction and a positive action of ceria on iron dispersion and sintering prevention.(C) 2015 Academie des sciences. Published by Elsevier Masson SAS. All rights reserved.
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页码:315 / 323
页数:9
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