Permeation of ethanol and methanol vapours through a porous alumina membrane

被引:11
作者
Assabumrungrat, S
White, DA
机构
[1] Dept. of Chem. Eng. and Chem. T., Imperial College
关键词
alumina membrane; permeation of ethanol; permeation of methanol;
D O I
10.1016/S0009-2509(96)00352-1
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
The permeation rates of ethanol and methanol vapours through alumina membranes with pore diameter of 5 and 10 nm were measured in the temperature range 150-200 degrees C. The permeability of ethanol and methanol vapours is less than that predicted from a model which combines bulk viscous and Knudsen flow. A new model based on the assumption that the contribution of the adsorbed phase of ethanol and methanol on the membrane pore wall is small compared to that in the gas phase is proposed. Experiments with nitrogen-ethanol and nitrogen-methanol mixtures were conducted to verify this assumption. The proposed model describes the behaviour of the mixtures well, though low temperature data with the 5 nm membrane do not agree so well with the model. Copyright (C) 1996 Elsevier Science Ltd
引用
收藏
页码:5241 / 5250
页数:10
相关论文
共 11 条
[1]  
BRUNAUAR S, 1944, ADSORPTION GASES VAP, V1, P19
[2]   THE STUDY OF ETHANE DEHYDROGENATION IN A CATALYTIC MEMBRANE REACTOR [J].
CHAMPAGNIE, AM ;
TSOTSIS, TT ;
MINET, RG ;
WAGNER, E .
JOURNAL OF CATALYSIS, 1992, 134 (02) :713-730
[3]  
GIORDANO N, 1981, Z PHYS CHEM-LEIPZIG, V262, P996
[4]   THE TRANSPORT OF CONDENSABLE VAPORS THROUGH A MICROPOROUS VYCOR GLASS MEMBRANE [J].
LEE, KH ;
HWANG, ST .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1986, 110 (02) :544-555
[5]  
LITINSKII AO, 1981, KINET KATAL, V22, P1423
[6]   PERMEATION OF ETHYLBENZENE AND HYDROGEN THROUGH UNTREATED AND CATALYTICALLY-TREATED ALUMINA MEMBRANES [J].
LIU, Y ;
DIXON, AG ;
MA, YH ;
MOSER, WR .
SEPARATION SCIENCE AND TECHNOLOGY, 1990, 25 (13-15) :1511-1521
[7]   NANOPOROUS CARBON MEMBRANES FOR SEPARATION OF GAS-MIXTURES BY SELECTIVE SURFACE FLOW [J].
RAO, MB ;
SIRCAR, S .
JOURNAL OF MEMBRANE SCIENCE, 1993, 85 (03) :253-264
[8]   DIFFUSION ON SURFACES .2. CORRELATION OF DIFFUSIVITIES OF PHYSICALLY AND CHEMICALLY ADSORBED SPECIES [J].
SLADEK, KJ ;
GILLILAND, ER ;
BADDOUR, RF .
INDUSTRIAL & ENGINEERING CHEMISTRY FUNDAMENTALS, 1974, 13 (02) :100-105
[9]   GAS-PERMEABILITY OF A POROUS ALUMINA MEMBRANE PREPARED BY THE SOL-GEL PROCESS (ALUMINUM ISO-PROPOXIDE) [J].
SUZUKI, F ;
ONOZATO, K ;
KUROKAWA, Y .
JOURNAL OF NON-CRYSTALLINE SOLIDS, 1987, 94 (01) :160-162
[10]   GAS-TRANSPORT AND SEPARATION WITH CERAMIC MEMBRANES .1. MULTILAYER DIFFUSION AND CAPILLARY CONDENSATION [J].
UHLHORN, RJR ;
KEIZER, K ;
BURGGRAAF, AJ .
JOURNAL OF MEMBRANE SCIENCE, 1992, 66 (2-3) :259-269