Gas Permeation Properties of Fluorinated Ionic Liquids
authors Pereiro, AB; Tome, LC; Martinho, S; Rebelo, LPN; Marrucho, IM
nationality International
journal INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
keywords CARBON-DIOXIDE; SEPARATION PERFORMANCE; CO2/N-2 SEPARATION; BLOOD SUBSTITUTES; OXYGEN CARRIERS; CO2 CAPTURE; SOLUBILITY; MEMBRANES; DIFFUSIVITY; BIS(TRIFLUOROMETHYLSULFONYL)AMIDE
abstract Despite the increasing amount of research in the ionic liquids field, there are still quite unexplored themes. That is the case of the fluorinated ionic liquids (FILs) family, here defined as ionic liquids with fluorine tags longer than four carbon atoms. In this work, gas permeation properties of two fluorinated ionic liquids, tetrabutylammonium heptadecafluorooctanesulfonate and 1-ethyl-3-methylpyridinium perfluorobutanesulfonate, were studied. For that purpose, supported liquid membranes of the fluorinated ionic liquids were prepared using a polymeric porous membrane as supporting material, and their gas permeation properties for 10 different gases at 294 K were measured using a time-lag apparatus. The results show that the gas solubility of these FILs is of the same order of magnitude as gas solubilities for previously tested fluorinated ionic liquids and that solute size plays a more important role on gas diffusivity than viscosity. The perfluorocarbons and carbon dioxide separation performances were evaluated, and the results show that 1-ethyl-3-methylpyridinium perfluorobutanesulfonate is a better candidate than tetrabutylammonium heptadecafluorooctanesulfonate for the gas separation processes tested in this work.
publisher AMER CHEMICAL SOC
issn 0888-5885
year published 2013
volume 52
issue 14
beginning page 4994
ending page 5001
digital object identifier (doi) 10.1021/ie4002469
web of science category Engineering, Chemical
subject category Engineering
unique article identifier WOS:000317548900004
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journal analysis (jcr 2017):
journal impact factor 3.141
5 year journal impact factor 3.284
category normalized journal impact factor percentile 76.277
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