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Nanocomposite Silver Polymer Electrolytes as Facilitated Olefin Transport Membranes

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Authors
Kang, Sang Wook; Kim, Jong Hak; Char, Kookheon; Won, Jongok; Kang, Yong Soo
Issue Date
2006-08-14
Publisher
Elsevier
Citation
J. Memb. Sci. 285 (2006) 102
Keywords
Nanocomposite membraneSilverSilica nanoparticleOlefinFacilitated transport
Abstract
Solid-state silver polymer electrolyte membranes containing AgNO3 dissolved in poly(2-ethyl-2-oxazoline) (POZ) as an olefin carrier are not efficient for the separation of olefin/paraffin mixtures (selectivity 1). The addition of fumed silica nanoparticles into the POZ/AgNO3 complex membranes, however, resulted in a surprisingly significant enhancement of the permeance and selectivity (higher than 80) for propylene/propane mixtures. These enhancements are explained in terms of the silver ion activity in olefin coordination. FT-IR, X-ray photoelectron spectroscopy (XPS) and FT-Raman demonstrate that the silver ion activity continuously increases by Lewis acid–base interactions upon incorporation of the silica nanoparticles up to 0.1 mole ratio of silica, above which it abruptly decreases. Furthermore, the structural change of polymer electrolyte membranes took place by the presence of nanoparticles, supported by the Tg measurement.
ISSN
0376-7388
Language
English
URI
http://hdl.handle.net/10371/5772
DOI
https://doi.org/10.1016/j.memsci.2006.08.005
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Chemical and Biological Engineering (화학생물공학부)Journal Papers (저널논문_화학생물공학부)
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