The role of copper in catalytic performance of a Fe-Cu-Al-O catalyst for water gas shift reaction

被引：33

作者：

Ye, Yingchun ^{[1
]}

Wang, Lei ^{[1
]}

Zhang, Shiran ^{[1
]}

Zhu, Yuan ^{[1
]}

Shan, Junjun ^{[1
]}

Tao, Franklin ^{[1
]}

机构：

[1] Univ Notre Dame, Dept Chem & Biochem, Notre Dame, IN 46556 USA

来源：

CHEMICAL COMMUNICATIONS | 2013年 / 49卷 / 39期

基金：

美国国家科学基金会;

关键词：

IRON-BASED CATALYSTS; SURFACE-CHEMISTRY; SPECTROSCOPY; PROMOTION; OXIDES; CERIA;

D O I：

10.1039/c2cc37416a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A Fe-Cu-Al-Owater gas shift catalyst with a Fe : Cu atomic ratio of 4 : 1 upon pretreatment at 350 degrees C in H-2 exhibits a conversion higher than a physicalmixture of Fe-Al-O and Cu-Al-O by similar to 40% over a temperature range of 300 degrees C-450 degrees C. In situ ambient pressure X-ray photoelectron spectroscopy studies suggest that the surface region of Fe-Cu-Al-O was restructured into a double-layer structure consisting of a surface layer of Fe3O4 and ametallic Cu layer belowit upon pretreatment at 350 degrees C. The strong metal (Cu)-oxide (Fe3O4) interface effect of this double layer structure enhances the catalytic activity of Fe3O4 in WGS.

引用

页码：4385 / 4387

页数：3

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