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
收藏
页码：113 / 117
页数：5
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