Au/CeO2-SBA-15 catalysts for CO oxidation: Effect of ceria loading on physic-chemical properties and catalytic performances

Publication year: 2012 Source: Catalysis Today, Available online 4 February 2012 L.F. Liotta, G. Pantaleo, F. Puleo, A.M. Venezia In this work gold catalysts supported over SBA-15 with different CeO2loadings (5–30 wt%) were prepared, characterized by N2physisorption analyses, SAXS, XRD, STEM and XPS techniques and their catalytic performances were evaluated in the CO oxidation, chosen as reaction test. Over a selected catalyst, Au/CeO2(20 wt%)-SBA-15, the effect of CO2and of the mixture (CO2 + H2O) on the CO conversion to CO2was also evaluated.Characterizations by SAXS, XRD, STEM and XPS were carried out on selected spent catalysts after CO oxidation.The results were discussed in terms of relationship between morphological, structural, electronic and catalytic properties as a function of the ceria loading.

Publication year: 2012 Source: Catalysis Today, Available online 4 February 2012 L.F. Liotta, G. Pantaleo, F. Puleo, A.M. Venezia In this work gold catalysts supported over SBA-15 with different CeO2loadings (5–30 wt%) were prepared, characterized by N2physisorption analyses, SAXS, XRD, STEM and XPS techniques and their catalytic performances were evaluated in the CO oxidation, chosen as reaction test. Over a selected catalyst, Au/CeO2(20 wt%)-SBA-15, the effect of CO2and of the mixture (CO2 + H2O) on the CO conversion to CO2was also evaluated.Characterizations by SAXS, XRD, STEM and XPS were carried out on selected spent catalysts after CO oxidation.The results were discussed in terms of relationship between morphological, structural, electronic and catalytic properties as a function of the ceria loading.

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Au/CeO2-SBA-15 catalysts for CO oxidation: Effect of ceria loading on physic-chemical properties and catalytic performances