Polymer-ionic liquid gels for enhanced gas transport

Abstract

Remarkably increased permeabilities for the separation of an important binary gas pair (CO2/N2) by polymer-ionic liquid gel membranes are reported.

Biohydrogen purification by membranes: An overview on the operational conditions affecting the performance of non-porous, polymeric and ionic liquid based gas separation membranes

“…For example, it was demonstrated that using nanofiltration membranes as support materials sufficient capillary binding forces can be provided that help the ionic liquid to stay in the pores even at higher pressure [32,39]. The stability and probably the pressure resistance of the SILMs can also be improved by coating the ionic liquids with a dense polymer (e.g.…”

PVDF/ionic liquid polymer blends with superior separation performance for removing CO2 from hydrogen and flue gas

“…Hong et al [25] reported a series of PVDF/[emim][BF 4 ] polymer gels that exhibited impressive gas separation performance. The best performance of their polymer gels had CO 2 permeability and CO 2 /N 2 selectivity of 400 Barrer and 60, respectively.…”

ABA-triblock copolymer ion gels for CO2 separation applications

“…The displacement of ionic liquids from the support can still happen with sufficient trans-membrane pressure difference. To address this problem, efforts have been made to develop a solid-state material that can combine the liquid-like permeability of ILs with a solidlike structure, using either low-molecular weight gelators [56], or compatible macromolecules, such as chemically-crosslinked polymerized ionic liquids (PIL) [57][58][59][60][61][62]. These IL-based composite materials have shown improved mechanical stability and good separation performance.…”