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

来源：

COMPTES RENDUS CHIMIE | 2015年 / 18卷 / 03期

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.

引用

页码：315 / 323

页数：9