ADSORPTION, PERMEATION, AND DIFFUSION OF GASES IN MICROPOROUS MEMBRANES .2. PERMEATION OF GASES IN MICROPOROUS GLASS MEMBRANES

被引：65

作者：

SHELEKHIN, AB ^{[1
]}

DIXON, AG ^{[1
]}

MA, YH ^{[1
]}

机构：

[1] WORCESTER POLYTECH INST,DEPT MECH ENGN,100 INST RD,WORCESTER,MA 01609

来源：

JOURNAL OF MEMBRANE SCIENCE | 1992年 / 75卷 / 03期

关键词：

HOLLOW FIBER MEMBRANE; SILICA; MICROPOROUS MEMBRANES; COMPRESSIBLE FLOW; PERMEABILITY; GAS SEPARATION;

D O I：

10.1016/0376-7388(92)85066-R

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The gas permeability properties of He, H2, CO2, O2, N2, and CH4 in microporous silica membranes were studied as a function of temperature and pressure. A mathematical model of compressible flow in a hollow fiber tube with permeable walls was developed and solved to describe gas transfer in the membranes. The permeation rate of He in the microporous membrane was comparable to that in industrially produced polymeric membranes. Selectivity factors in the membrane were found to be a function of differences in the gas kinetic diameters. The ideal selectivity factor for He/CH4 was more than 10,000 at 30-degrees-C. Selectivity factors decreased with increasing temperature

引用

页码：233 / 244

页数：12

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