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Analysis of Facilitated Olefin Transport Through Polymer Electrolyte Membranes Containing Silver Salts  

Yong Soo Kang (Center for Facilitated Transport Membranes, KIST)
Dongkyun Ko (Center for Facilitated Transport Membranes, KIST, Department of Chemical Engineering, Inha University)
Jong Hak Kim (Center for Facilitated Transport Membranes, KIST)
Sung Taik Chung (Department of Chemical Engineering, Inha University)
Publication Information
Membrane Journal / v.13, no.4, 2003 , pp. 239-245 More about this Journal
Abstract
The origin of large difference of selectivity of $C_3H_6$ over $C_3H_8$ between pure gas and mixed gas through silver polymer electrolyte membranes is investigated. Firstly, the effect of feed condition on the permeance of mixture gas ($C_3H_6/C_3H^8$) and the separation performance is examined. Upon decrease of the $C_3\;H_6$ concentration, the $C_3H_6$ permeance decreased whereas the permeance of $C_3H_8$ increased, resulting in the decrease of the selectivity of $C_3H_6/C_3H_8/.$ This result is ascribed to the $C_3H_6$-induced plasticization of membranes. Experimental results were validated by means of mathematical modeling, where pressure independent permeabilities were used.
Keywords
membrane; facilitated transport; olefin; plasticization; mathematical model; orthogonal collocation on finite element method (OCFEM), gPROMS;
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