Isoprene/pentane separation using facilitated transport membranes

被引：5

作者：

Kim, SH

Kim, DB

Choi, DK

Lee, H

Kim, HS

Won, J

机构：

[1] Korea Inst Sci & Technol, Div Environm & Proc Technol, Seoul 136650, South Korea

[2] Sejong Univ, Dept Chem, Seoul, South Korea

来源：

JOURNAL OF MEMBRANE SCIENCE | 2004年 / 233卷 / 1-2期

关键词：

isoprene/pentane separation; cellulose acetate; facilitated transport membrane; alkene/alkane; silver salts;

D O I：

10.1016/j.memsci.2004.01.007

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The facilitated transport membranes, AgClO4-CA (cellulose acetate) and AgBF4-CA were prepared and tested for the separation of isoprene/pentane mixture. The maximum selectivities for isoprene over pentane were found to be 53 and 83 for AgClO4-CA and AgBF4-CA membranes. respectively. Fr-IR and UV-Vis studies show that the silver ions in the membranes are coordinated by the carbonyl groups of CA. Reversible diene coordination to silver ions was observed by FT-IR and UV-Vis studies. Treatment of the AgBF4-CA membrane placed in a gas cell with isoprene produces an isoprene-coordinated membrane in which the coordinated isoprene is easily replaced by other diene compounds such as trans-piperylene and 1,3-butadiene. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：113 / 117

页数：5

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