Synthesis of hafnia powders and nanofiltration membranes by sol-gel process

被引：14

作者：

Blanc, P ^{[1
]}

Hovnanian, N ^{[1
]}

Cot, D ^{[1
]}

Larbot, A ^{[1
]}

机构：

[1] Ecole Natl Super Chim Montpellier, Lab Mat & Procedes Membranaires, UMR CNRS ENSCM UM 2 5635, F-34296 Montpellier 5, France

来源：

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY | 2000年 / 17卷 / 02期

关键词：

hafnium alkoxide; sol-gel process; hafnia powder; inorganic membranes;

D O I：

10.1023/A:1008728115386

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：

Hafnia nanofiltration membranes were prepared by sol-gel process from hafnium 1-methoxy-2 propoxide via colloidal route. This original molecular precursor has been synthesized and characterized by H-1 NMR, mass spectroscopy, infrared and elemental analysis. Its peptization revealed to be the most efficient method to provide a highly reactive powder at a low sintering temperature. The porous volume variation and the pore diameter distribution of the hafnia powder have been studied as a function of the sintering temperature and the TGA, DTA and dilatometry study are reported. The membrane sintered at 450 degrees C exhibited a defect-free texture with a cut-off equals to 420 Daltons and pore diameters equal to 1.9 nanometers.

引用

页码：99 / 110

页数：12

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