The Role of Au-Support Interactions in Creation of Catalytic Performance of Au/Ce0.75Zr0.25O2 in CO Oxidation
I. Dobrosz-Gómez1, M. A. Gómez García2, J. M. Rynkowski3
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1Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Colombia, Sede Manizales, Colombia
2G.I.A.N.T., Grupo de Investigación en Aplicación de Nuevas Tecnologias, Universidad Nacional de Colombia, Sede Manizales, Colombia
3Institute of General and Ecological Chemistry, Technical University of Łódź, Żeromskiego 116, 90-924 Łódź, Poland
Pol. J. Environ. Stud. 2009;18(4):587–591
The aim of this work was to obtain more detailed insight into the role of Au-support interactions in the creation of catalytic performance of Au/Ce0.75Zr0.25O2 in CO oxidation. The Ce0.75Zr0.25O2 oxide and Au/Ce0.75Zr0.25O2 catalysts were synthesized, characterized by BET, XRD, HRTEM, AAS, TPR-H2, and tested in CO oxidation. An approximate evaluation of H2 consumption for the surface reduction of the studied samples was estimated, applying the model developed by Johnson and Mooi, based on the qualitative relationship between the magnitude of the capping oxygen and BET surface area.