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Sub-ambient CO oxidation over Au/MOx/CeO2-Al2O3 (M=Zn or Fe)

Ramirez Reina, T, Ivanova, S, Domínguez, MI, Centeno, MA and Odriozola, JA (2012) Sub-ambient CO oxidation over Au/MOx/CeO2-Al2O3 (M=Zn or Fe) Applied Catalysis A: General, 419. pp. 58-66.

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Abstract

A series of ZnO and Fe2O3 modified ceria/alumina supports and their corresponding gold catalyst were prepared and studied in the CO oxidation reaction. ZnO-doped solids show a superior catalytic activity compared to the bare CeO2-Al2O3, which is attributed to the intimate contact of the ZnO and CeO2 phases, since an exchange of the lattice oxygen occurs at the interface. In a similar way, Fe2O3-modified supports increase the ability of the CeO2-Al2O3 solids to eliminate CO caused by both the existence of Ce–Fe contact surface and the Fe2O3 intrinsic activity. All of the gold catalysts were very efficient in oxidising CO irrespective of the doping metal oxide or loading, with the ZnO containing systems better than the others. The majority of the systems reached total CO conversion below room temperature with the ZnO and Fe2O3 monolayer loaded systems the most efficient within the series.

Item Type: Article
Subjects : Chemical and Process Engineering
Divisions : Faculty of Engineering and Physical Sciences > Chemical and Process Engineering
Authors :
AuthorsEmailORCID
Ramirez Reina, TUNSPECIFIEDUNSPECIFIED
Ivanova, SUNSPECIFIEDUNSPECIFIED
Domínguez, MIUNSPECIFIEDUNSPECIFIED
Centeno, MAUNSPECIFIEDUNSPECIFIED
Odriozola, JAUNSPECIFIEDUNSPECIFIED
Date : 29 March 2012
Identification Number : https://doi.org/10.1016/j.apcata.2012.01.012
Copyright Disclaimer : © 2012 Elsevier B.V. All rights reserved
Depositing User : Symplectic Elements
Date Deposited : 13 Sep 2016 10:40
Last Modified : 13 Sep 2016 10:40
URI: http://epubs.surrey.ac.uk/id/eprint/812130

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