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Effect of Valine on facilitated O1e1in Transport Membranes  

Yong Soo Kang (Center for Facilitated Transport Membranes, KIST)
Sang Wook Kang (Center for Facilitated Transport Membranes, KIST)
Jong Hak Kim (Center for Facilitated Transport Membranes, KIST)
Jongok Won (Department of Applied Chemistry, Sejong University)
Kookheon Char (Chemical Processes, Seoul National University)
Publication Information
Membrane Journal / v.13, no.2, 2003 , pp. 125-129 More about this Journal
Abstract
A remarkable separation performance of olefin/paraffin mixtures has been observed through facilitated olefin transport membranes consisting of silver ions dissolved in polymer matrices. In this research, valine, an amino acid, was introduced in poly (2-ethyl-2-oxazoline) (POZ)/$AgBF_4$ membranes to increase the separation performance. FT-IR spectra show that the cationic sites ($-NH_3^+$) of valine interact with the counter anion of the silver salt, resulting in the enhanced activity of the silver ions and consequently improved separation perfornance. Therefore, the $POZ/AgBF_4$ membranes containing valines exhibit the higher permeance as well as the higher selectivity of propylene/propane than those without valine.
Keywords
valine; amino acid; membrane; facilitated transport; silver salt; olefin;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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