Journal
JOURNAL OF MEMBRANE SCIENCE
Volume 321, Issue 1, Pages 3-7Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.memsci.2007.12.033
Keywords
CO2; room-temperature ionic liquid; membrane; polymer; synthesis
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Solid, polymer membranes fabricated from room-temperature ionic liquid monomers containing oligo(ethylene glycol) or nitrile-terminated alkyl substituents tethered to imidazolium cations were found to exhibit ideal CO2/N-2 and CO2/CH4 separation factors significantly greater than those with comparable length n-alkyl substituents, with similar CO2 permeability. Polymers containing these functional groups exhibited CO2/N-2 gas separation performance exceeding the upper bound of a Robeson Plot. (C) 2007 Elsevier B.V. All rights reserved.
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