Design of a stable steam reforming catalyst-A promising route to sustainable hydrogen from biomass oxygenates

被引:64
作者
Guell, B. Matas [1 ]
Babich, I. [1 ]
Nichols, K. P. [1 ]
Gardeniers, J. G. E. [1 ]
Lefferts, L. [1 ]
Seshan, K. [1 ]
机构
[1] Univ Twente, Fac Sci & Technol, NL-7500 AE Enschede, Netherlands
关键词
Sustainable; Hydrogen; Steam reforming; Pt; Oxygen; MALDI-TOF MS; ACETIC-ACID; BIO-OIL; OXIDATION; DEACTIVATION; KETONIZATION; CONDENSATION; COMPONENTS; PYROLYSIS; ZIRCONIA; PT/ZRO2;
D O I
10.1016/j.apcatb.2009.02.008
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The influence of the support and the presence of oxygen were investigated in the steam reforming of acetic acid, a bio-oil model compound, over Pt/ZrO2 and Pt/CeO2 catalysts. In the absence of oxygen, all catalysts suffered from deactivation. Acetone, formed via condensation/dehydration of acetic acid, is a coke precursor and causes catalyst deactivation. The use of a support with red-ox properties and the presence of oxygen improved the stability of the Pt/CeO2 catalyst tremendously. Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) characterization of coke indicates that the presence of oxygen prevents extensive oligomerization/coke forming reactions and that the resulting specie are more easily combusted. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码:38 / 44
页数:7
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