Preparation, hydrogen separation and hydrothermal stability of microporous silica membrane

被引：0
|
作者：
Wei, Q [1 ]
Li, JL [1 ]
Song, CL [1 ]
Liu, W [1 ]
Chen, CS [1 ]
机构：
[1] Univ Sci & Technol China, Dept Mat Sci & Engn, Hefei 230026, Peoples R China
来源：
JOURNAL OF INORGANIC MATERIALS | 2004年 / 19卷 / 01期
关键词：
silica membrane; hydrogen separation; hydrothermal stability;
D O I：
暂无
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：
Microporous silica membranes on gamma-Al2O3/alpha-Al2O3 porous supports were prepared by a sol-gel process, and characterized by IR, TG, FE-SEM,N-2 adsorption as well as gas permeation. The H-2 permeance of 2.3x 10(-7)mol.m(-2).Pa-1.s(-1) and H-2/CO2 separation factor of 8.0 were measured with the as-prepared membrane at 200degreesC. Deterioration of the membrane performance in the humid atmosphere was observed, which can be attributed to the collapse of the pore structure caused by the reaction between surface hydroxy group and water vapor.
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页码：133 / 139
页数：7
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