Formation of SnO2 supported porous membranes

被引：9

作者：

Santos, LRB

Pulcinelli, SH

Santilli, CV

机构：

[1] Inst de Quimica, Araraquara, Brazil

来源：

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY | 1997年 / 8卷 / 1-3期

关键词：

supported membrane; SnO2; coating; pore size distribution; sintering; GEL;

D O I：

10.1023/A:1018337908450

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

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.

引用

页码：477 / 481

页数：5

共 14 条

[1]

ADOCK DS, 1957, J AM CERAM SOC, V40, P355

[2]

BARRET EP, 1951, J COLLOID INTERF SCI, V26, P373

[3]

Blunden S.J., 1985, IND USES TIN CHEM

[4] CERAMIC NANOSTRUCTURE MATERIALS, MEMBRANES AND COMPOSITE LAYERS [J].