A quantitative morphological analysis of nanostructured ceria-silica composite catalysts

摘要: This study aims at examining the morphology of different catalysts, which are based on a dispersion ceria nanoparticles embedded in high surface area mesoporous silica framework. In order to fully describe mesostructured composite material, we propose here quantitative description microstructure analysis micrographs that were obtained via high-resolution transmission electron microscopy. We have therefore developed an automatic image process automatically and efficiently extract all components catalyst images. A statistical morphological spatial arrangement also presented. The shows clear differences between materials analysed terms total phase emerging into pores, parameters prime importance for catalytic properties. Thus, silica-ceria nanostructured materials, displaying large up 300 m(2) g(-1) shown exhibit highly rugged surfaces resulting from pores.