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

Gonzalo Águila; Sichem Guerrero; Paulo Araya

doi:10.1016/j.catcom.2008.07.011

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

Gonzalo Águila, Sichem Guerrero, Paulo Araya^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

53 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	2550-2554
Number of pages	5
Journal	Catalysis Communications
Volume	9
Issue number	15
DOIs	https://doi.org/10.1016/j.catcom.2008.07.011
State	Published - 20 Sep 2008

Bibliographical note

Funding Information:
The funding provided by Fondecyt Project 1070961, and the kindly donation of hydrous zirconia from MEI Chemical Corporation, are gratefully acknowledged.

Keywords

Catalysis
Catalysts
Copper

Access to Document

10.1016/j.catcom.2008.07.011

Cite this

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title = "Influence of the crystalline structure of ZrO2 on the activity of Cu/ZrO2 catalysts on the water gas shift reaction",

abstract = "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.",

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note = "Funding Information: The funding provided by Fondecyt Project 1070961, and the kindly donation of hydrous zirconia from MEI Chemical Corporation, are gratefully acknowledged.",

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AU - Águila, Gonzalo

AU - Guerrero, Sichem

AU - Araya, Paulo

N1 - Funding Information: The funding provided by Fondecyt Project 1070961, and the kindly donation of hydrous zirconia from MEI Chemical Corporation, are gratefully acknowledged.

PY - 2008/9/20

Y1 - 2008/9/20

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AB - 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.

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