Formation of SnO2 supported porous membranes
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Data
1997-01-01
Autores
Santos, LRB
Pulcinelli, Sandra Helena [UNESP]
Santilli, Celso Valentim [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Kluwer Academic Publ
Resumo
In this work, the effect of the substrate microstructure on the formation of SnO2 membranes and of the sintering conditions on their porosity have been analysed. Samples have been prepared by colloidal suspensions cast on alumina or kaolin substrates. Supported membranes have been characterized by Hg porosimetry, MEV, XRD and N-2 adsorption-desorption isotherms. The results show that the narrower pore size distribution of alumina substrate allowed to prepare membranes more homogeneous and free of cracks than that supported on kaolin. The crystallite and pore sizes of the membranes could be controlled by adjusting the temperature of sintering, allowing materials with adequate microstructure with application for ultrafiltration process.
Descrição
Palavras-chave
supported membrane, SnO2 coating, pore size distribution, sintering
Como citar
Journal of Sol-gel Science and Technology. Dordrecht: Kluwer Academic Publ, v. 8, n. 1-3, p. 477-481, 1997.