Significance of entropic selectivity for advanced gas separation membranes

被引：190

作者：

Singh, A ^{[1
]}

Koros, WJ ^{[1
]}

机构：

[1] UNIV TEXAS,DEPT CHEM ENGN,AUSTIN,TX 78712

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 1996年 / 35卷 / 04期

关键词：

D O I：

10.1021/ie950559l

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Commercial polymeric gas separation membranes exhibit a trade-off between productivity and selectivity. However, on this same trade-off curve molecular sieving materials like zeolites and carbon molecular sieves (CMS) lie above the upper bound for polymers. A comparison of the gas transport properties of these three different classes of materials highlights the importance of ''entropic selectivity'' which has hitherto not been focused on for membrane-based separation of gases. A whole new generation of polymeric membrane materials may result from enhancement of entropic selectivity of polymeric membrane materials.

引用

页码：1231 / 1234

页数：4

共 11 条

[1]

[Anonymous], STATISTICAL THERMODY

[2] MOLECULAR CHARGE DISTRIBUTIONS AND CHEMICAL BINDING [J].