Cu-based spinel catalysts CuB2O4 (B = Fe, Mn, Cr, Ga, Al, Fe0.75Mn0.25) for steam reforming of dimethyl ether

被引：119

作者：

Faungnawakij, Kajornsak ^{[1
,2
]}

Shimoda, Naohiro ^{[1
]}

Fukunaga, Tetsuya ^{[3
]}

Kikuchi, Ryuji ^{[1
]}

Eguchi, Koichi ^{[1
]}

机构：

[1] Kyoto Univ, Grad Sch Engn, Dept Energy & Hydrocarbon Chem, Nishikyo Ku, Kyoto 6158510, Japan

[2] Japan Sci & Technol Agcy, Kyoto, Japan

[3] Idemitsu Kosan Co Ltd, Cent Res Labs, Chiba 2990293, Japan

来源：

APPLIED CATALYSIS A-GENERAL | 2008年 / 341卷 / 1-2期

关键词：

Cu-based spinel; steam reforming; dimethyl ether; hydrogen; fuel cell;

D O I：

10.1016/j.apcata.2008.02.039

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：

Cu-based spinel-oxides CuB2O4 (B = Fe, Mn, Cr, Ca, Al, or Fe0.75Mn0.25)were synthesized via a sol-gel method and subsequent solid-state reaction. The spinels mechanically mixed with gamma-Al2O3 were evaluated for production of hydrogen from dimethyl ether steam reforming (DME SR). The reduction behavior and crystal property of these spinel-oxides, and the Cu oxidation state in spinel catalysts were investigated by temperature-programmed reduction, X-ray diffraction, and X-ray photoelectron spectroscopy techniques. The reduced phases of the Cu-based spinel catalysts that strongly affected the catalytic activity and durability were composed of metallic copper with metal oxides (MnO (B = Mn), Cr2O3 (B=Cr), and Al2O3 (B = Al)) or with spinels (CuGa2O4 (B = Ga), Fe3O4 (B=Fe), and MnFe2O4 (B = Fe0.75Mn0.25). The stability of B metal oxides and the interaction between copper species and B metal oxides significantly contributed to the reforming performance. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：139 / 145

页数：7

共 31 条

[1] Translucent thin film Fe2O3 photoanodes for efficient water splitting by sunlight:: Nanostructure-directing effect of Si-doping [J].