Influence of the crystalline structure of ZrO2 on the activity of Cu/ZrO2 catalysts on the water gas shift reaction

被引：55

作者：

Aguila, Gonzalo ^{[1
]}

Guerrero, Sichem ^{[1
]}

Araya, Paulo ^{[1
]}

机构：

[1] Univ Chile, Dept Ingn Quim & Biotecnol, Ctr Invest Interdisciplinaria Avanzada Ciencia Ma, Santiago, Chile

来源：

CATALYSIS COMMUNICATIONS | 2008年 / 9卷 / 15期

关键词：

D O I：

10.1016/j.catcom.2008.07.011

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 structure sensitivity of copper catalysts supported on monoclinic and tetragonal ZrO2 was studied on the water gas shift (WGS) reaction. The results show that the activity of copper supported on tetragonal ZrO2 is much higher than when supported on monoclinic ZrO2. The obtained results favour an associative mechanism, which considers the formation of formate species on the surface of ZrO2. The differences on the observed WGS activity are attributed to the stability of adsorbed formates on the different ZrO2 Polymorphs. It was found that the active Cu species for the WGS reaction is the bulk CuO. (C) 2008 Elsevier B.V. All rights reserved.

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页码：2550 / 2554

页数：5

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