Gold–Ceria SBA-15-Supported Catalyst for CO Preferential Oxidation: Surface and Reactivity Studies

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ID: 37673
2012
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Abstract
In this article, the preparation and application of gold and cerium catalysts supported on zirconium-doped mesoporous silica SBA-15 was studied. These materials have been prepared by two different methods and characterized to investigate their textural properties, dispersion of the active phases and oxidation states. Both materials exhibit a marked catalytic activity. The size of the gold nanoparticles is directly related to the CO conversion rate and to the selectivity towards CO 2 exhibiting a strong temperature dependence. An X-ray photoelectron spectroscopic study of the composition and chemical state of the nanoparticles indicates the presence of Au in a metallic state. Transmission electron microscopic micrographs indicate that the best catalyst shows a higher dispersion of Au in spite of its lower gold surface content.
Reference Key
reyescarmona2012goldceriaadsorption Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Reyes-Carmona, Álvaro;Talon, Aldo;Moretti, Elisa;Lenarda, Maurizio;Jiménez-López, Antonio;Rodríguez-Castellón, Enrique;
Journal adsorption science & technology
Year 2012
DOI
DOI not found
URL
https://doi.org/10.1260/0263-6174.30.8-9.751
Keywords Keywords not found

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