کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
152582 | 456499 | 2009 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Gas separations in fluoroalkyl-functionalized room-temperature ionic liquids using supported liquid membranes Gas separations in fluoroalkyl-functionalized room-temperature ionic liquids using supported liquid membranes](/preview/png/152582.png)
A series of four imidazolium salts containing increasing lengths of fluoroalkyl substituents was synthesized. The three that exist as molten salts at 296 K were tested for their gas separation properties relating to CO2, O2, N2 and CH4 using a supported ionic liquid membrane (SILM) configuration. These fluoroalkyl-functionalized room-temperature ionic liquids (RTILs) were found to exhibit ideal selectivities for CO2/N2 separation that were lower than their alkyl-functionalized analogues, but higher ideal selectivity for CO2/CH4 separation. The differences in performance of fluoroalkyl-functionalized RTILs relative to their alkyl-functionalized counterparts are explained through the use of solubility parameters, group contributions and in context of the classically observed deviations of fluorocarbons from “regular” solution behavior.
Journal: Chemical Engineering Journal - Volume 147, Issue 1, 1 April 2009, Pages 43–50