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Predictive models for permeability and diffusivity of CH4 through imidazolium-based supported ionic liquid membranes
, Article Journal of Membrane Science ; Volume 371, Issue 1-2 , 2011 , Pages 127-133 ; 03767388 (ISSN) ; Barghi, S.H ; Rashtchian, D ; Sharif University of Technology
Abstract
Experimental permeability and diffusivity values for CO2 and CH4 through imidazolium-based ionic liquid 1-hexyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide ([hmim][Tf2N]) were determined in the temperature range of 300-320K using temperature correction factor defined in our previous study. According to literature, experimental values of permeability and diffusivity obtained in this study for CO2 in [hmim][Tf2N], showed good agreement with predictive models reported by other researchers. In addition, experimental values of permeability and diffusivity for CH4 in [hmim][Tf2N] as a function of pressure have been reported in this study. Considering the results of present study and...
Separation of CO2/CH4 through alumina-supported geminal ionic liquid membranes
, Article Journal of Membrane Science ; Vol. 455 , 2014 , pp. 229-235 ; ISSN: 03767388 ; Adibi, M ; Seifkordi, A. A ; Fazli, Y ; Sharif University of Technology
Abstract
Interesting properties of ionic liquids lead to their application as sub-component of membrane structures. Supported ionic liquid membranes (SILMs) are porous membranes whose pores are saturated with ionic liquids. Two ionic liquids, pr[mim]2[Tf2N]2 [1,3-di(3-methyl-imidazolium) propane bis(trifluoromethylsulfonyl) imide] and, h[mim]2 [Tf2N]2 [(1,6-di(3-methylimidazolium)hexane bis(trifluoromethylsulfonyl)imide)], were synthesized in our laboratory and stabilized on an alumina porous support. Permeability and permselectivity of carbon dioxide and methane using membranes containing these ionic liquids were then measured. The experiments were performed in the pressure range of 10-50kPa and...