Ultrahigh temperature water gas shift catalysts to increase hydrogen yield from biomass gasification

被引：41

作者：

Haryanto, Agus ^{[1
]}

Fernando, Sandun ^{[1
]}

Adhikari, Sushil ^{[1
]}

机构：

[1] Mississippi State Univ, Dept Agr & Biol Engn, Mississippi State, MS 39762 USA

来源：

CATALYSIS TODAY | 2007年 / 129卷 / 3-4期

关键词：

hydrogen; biomass gasification; ultrahigh temperature; water gas shift (WGS);

D O I：

10.1016/j.cattod.2006.09.039

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Noble metal (Rh, Pt, Pd, Ir, Ru, and Ag) and Ni catalysts supported on CeO2-Al2O3 were investigated for water gas shift reaction at ultrahigh temperatures. Pt/CeO2-Al2O3 and Ru/CeO2-Al2O3 demonstrated as the best catalysts in terms of activity, hydrogen yield and hydrogen selectivity. At 700 degrees C and steam to CO ratio of 5.2:1, Pt/CeO2-Al2O3 converted 76.3% of CO with 94.7% of hydrogen selectivity. At the same conditions, the activity and hydrogen selectivity for Ru/CeO2-Al2O3 were 63.9% and 85.6%, respectively. Both catalysts showed a good stability over 9 h of continuous operation. However, both catalysts showed slight deactivation during the test period. The study revealed that Pt/CeO2-Al2O3 and Ru/CeO2-Al2O3 were excellent ultrahigh temperature water gas shift catalysts, which can be coupled with biomass gasification in a downstream reactor. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：269 / 274

页数：6

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