Study on Surface Dispersion and Topography of Ceria Supported on γ-Alumina

Abstract

The active ingredient of catalysts is generally dispersed on porous supports of inert metal oxides to augment its catalytic activity. In this paper, the dispersion and topography of CeO2 supported on γ-Al2O3 was studied by means of XRD. The monolayer coverage of CeO2 was determined by internal-standard method with NiO reference material. Highly dispersed CeO2 would appear and encapsulate outside theγ-Al2O3 support surface evenly when CeO2 loading was below its monolayer coverage; above the monolayer coverage, crystalline CeO2 would appear.