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 journalArticlepeer-review

45 Scopus citations


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 languageEnglish
Pages (from-to)2550-2554
Number of pages5
JournalCatalysis Communications
Issue number15
StatePublished - 20 Sep 2008
Externally publishedYes

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.


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