Resumo

CARRIAZO, José G.; BARRERA-VARGAS, Mario  e  MOLINA, Manuel F.. Platinum impregnation and fractal dimension on two types of micro-porous solids. Rev. ing. univ. Medellín [online]. 2010, vol.9, n.16, pp.61-69. ISSN 1692-3324.

This research shows the modification of a zeolite Y and a pillared clay (saponite) by impregnation with different platinum quantities (synthesis of Pt catalysts). The solids were characterized about the chemical composition and texture. The textural characterization reveals important changes in the solids, showing that in the zeolitic catalysts microporosity is formed, whereas in the pillared clay the microporous structures are partially blocked. Fractal dimension (by Avnir-Jaroniec method) indicates that the topographic features of the pillared clay surface are significantly affected due to the modification with platinum, probably as a consequence of platinum clusters formation.

Palavras-chave : pillared clay; zeoliteY; fractal dimension; Pt impregnation.

        · resumo em Espanhol     · texto em Espanhol     · Espanhol ( pdf )