Dramatic effect of redox pre-treatments on the CO oxidation activity of Au/Ce0.50Tb0.12Zr0.38O2−x catalysts prepared by deposition–precipitation with urea: a nano-analytical and nano-structural study

Eloy del Río; Miguel López-Haro; José M. Cíes; Juan J. Delgado; José J. Calvino; Susana Trasobares; Ginesa Blanco; Miguel A. Cauqui; Serafín Bernal

doi:10.1039/C3CC42051E

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Dramatic effect of redox pre-treatments on the CO oxidation activity of Au/Ce_0.50Tb_0.12Zr_0.38O_2−xcatalysts prepared by deposition–precipitation with urea: a nano-analytical and nano-structural study†

Eloy del Río,*^a Miguel López-Haro,^a José M. Cíes,^a Juan J. Delgado,^a José J. Calvino,^a Susana Trasobares,^a Ginesa Blanco,^a Miguel A. Cauqui^a and Serafín Bernal^a

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* Corresponding authors

^a Dept. Ciencia de los Materiales, Ingeniería Metalúrgica y Química Inorgánica, Facultad de Ciencias, Universidad de Cádiz, Campus Río San Pedro, Puerto Real, Cádiz, Spain
E-mail: eloy.delrio@uca.es

Abstract

Nano-structural and nano-analytical studies show that the dramatic difference in CO oxidation activity observed between two Au/Ce_0.50Tb_0.12Zr_0.38O_2−x samples prepared by deposition–precipitation with urea and further activated under oxidising or reducing conditions is due to the poisoning effect of a very thin layer of carbon grown on the pre-reduced catalyst.

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Article information

DOI: https://doi.org/10.1039/C3CC42051E
Article type: Communication
Submitted: 20 Mar 2013
Accepted: 03 Jun 2013
First published: 06 Jun 2013

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Chem. Commun., 2013,49, 6722-6724

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Dramatic effect of redox pre-treatments on the CO oxidation activity of Au/Ce_0.50Tb_0.12Zr_0.38O_2−x catalysts prepared by deposition–precipitation with urea: a nano-analytical and nano-structural study

E. del Río, M. López-Haro, J. M. Cíes, J. J. Delgado, J. J. Calvino, S. Trasobares, G. Blanco, M. A. Cauqui and S. Bernal, Chem. Commun., 2013, 49, 6722 DOI: 10.1039/C3CC42051E

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