Abstract
A series of low loading gold supported ceria/alumina catalysts have been prepared by the deposition–precipitation method, varying the pH of the synthesis. The catalysts were characterised by means of XRD, TEM, SBET, XRF and UV–Vis techniques, and their catalytic activity towards CO oxidation in the absence and in presence of water in the stream, were tested. It has been found that in this low loading gold catalysts, where the metallic particles are far away one from another and the oxygen transportation is not the limiting step of the reaction, the electronic properties of the ceria phase and the structure of the metal-support perimeter more than the diameter of the gold nanoparticles is the determinant factor in the catalytic performances of the solid.
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Centeno, M.Á., Portales, C., Carrizosa, I. et al. Gold supported CeO2/Al2O3 catalysts for CO oxidation: influence of the ceria phase. Catal Lett 102, 289–297 (2005). https://doi.org/10.1007/s10562-005-5871-5
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DOI: https://doi.org/10.1007/s10562-005-5871-5