Influence of adsorption on the gas permeation performances in the mesoporous alumina ceramic membrane

被引：20

作者：

Lee, HJ ^{[1
]}

Yamauchi, H ^{[1
]}

Suda, H ^{[1
]}

Haraya, K ^{[1
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Res Inst Innovat Sustainable Chem, Tsukuba, Ibaraki 3058565, Japan

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2006年 / 49卷 / 01期

基金：

日本学术振兴会;

关键词：

alumina ceramic membrane; gas permeance; mesoporous membrane; surface diffusion;

D O I：

10.1016/j.seppur.2005.08.007

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Interests on the gas separation using ceramic membranes have considerably increased for gas separation potentials since they have a high as permeance and represent better thermal, chemical and mechanical stabilities than polymeric membranes. The influence of adsorption on the permeation properties of gas species having different adsorption capacity was investigated in the mesoporous gamma-alumina ceramic membrane. It was observed that the adsorption of the adsorbing gas species in the single gas systems increased permeance than the value predicted by the Knudsen diffusion. thus, decreasing the resistance for gas transport through the membrane. In the permeation results for the binary mixture gas systems, the preferential adsorption on the pores increased permeation performances of the adsorbing gas species. It is considered that the adsorption of the adsorbing gas species increased the permeation performances by limiting the diffusion of the weakly adsorbing gas species through the mesoporous membrane. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：49 / 55

页数：7

共 25 条

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