In situ DRIFT-mass spectrometry study of the ethanol steam-reforming reaction over carbonyl-derived Co/ZnO catalysts

被引：185

作者：

Llorca, J ^{[1
]}

Homs, N ^{[1
]}

de la Piscina, PR ^{[1
]}

机构：

[1] Univ Barcelona, Dept Quim Inorgan, E-08028 Barcelona, Spain

来源：

JOURNAL OF CATALYSIS | 2004年 / 227卷 / 02期

关键词：

ethanol steam reforming; acetaldehyde; surface acetate; cobalt catalyst;

D O I：

10.1016/j.jcat.2004.08.024

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 ethanol steam-reforming reaction was studied by in situ diffuse reflectance infrared Fourier transform spectroscopy and on-line mass spectrometry over ZnO and a Co/ZnO catalyst prepared from impregnation of CO2(CO)(8). Acetaldehyde is the primary product. The presence of cobalt favors the reforming of acetaldehyde, via the C-C scission of bidentate acetate species. Dimethyl ketone is produced as a by-product on ZnO. The roles of ZnO support and cobalt are discussed on the basis of surface species and their subsequent evolution. (C) 2004 Elsevier Inc. All rights reserved.

引用

页码：556 / 560

页数：5

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