ADSORPTION, PERMEATION, AND DIFFUSION OF GASES IN MICROPOROUS MEMBRANES .1. ADSORPTION OF GASES ON MICROPOROUS GLASS MEMBRANES

被引：50

作者：

BHANDARKAR, M ^{[1
]}

SHELEKHIN, AB ^{[1
]}

DIXON, AG ^{[1
]}

MA, YH ^{[1
]}

机构：

[1] WORCESTER POLYTECH INST,DEPT CHEM 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 MEMBRANE; ADSORPTION; MICROPORE FILLING; INORGANIC MEMBRANE;

D O I：

10.1016/0376-7388(92)85065-Q

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Adsorption of CO2, H2O, C2H4, CH4, N2, C2H5OH, and CH2Cl2 in microporous silica hollow fiber membranes was studied at temperatures of 30-degrees-C and 70-degrees-C and at pressures up to 1.3 MPa. The experimental data were fitted with Langmuir, Dubinin-Radushkevich, and Freundlich isotherms. The best fitting model was found to be the Dubinin Radushkevich isotherm. Based on the fitting results the total volume of the micropores was found to be equal within the limits of experimental error for all the gases under investigation. No capillary condensation of the water and ethanol vapors was observed in the microporous fibers. The limits for the pore diameter, d, of the membrane deduced from the study were 5 < d < 20 angstrom.

引用

页码：221 / 231

页数：11

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