Please use this identifier to cite or link to this item:
|Title:||CO2 separation from flue gas using polyvinyl-(room temperature ionic liquid)-room temperature ionic liquid composite membranes|
|Citation:||Li, P., Pramoda, K.P., Chung, T.-S. (2011-08-03). CO2 separation from flue gas using polyvinyl-(room temperature ionic liquid)-room temperature ionic liquid composite membranes. Industrial and Engineering Chemistry Research 50 (15) : 9344-9353. ScholarBank@NUS Repository. https://doi.org/10.1021/ie2005884|
|Abstract:||In this work, a vinyl-functionalized room temperature ionic liquid (RTIL), 1-vinyl-3-butylimidazolium bis(trifluoromethylsulfonyl)imide ([vbim][Tf 2N]), has been successfully synthesized. The RTIL was further polymerized and mixed with 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([bmim][Tf2N]) to form the free-standing poly([vbim][Tf2N])-[bmim][Tf2N] composite films. The compositions of [bmim][Tf2N] in the composite membranes were designed at 15, 30, 45, and 60 wt %. The pristine poly([vbim][Tf 2N]) and poly([vbim][Tf2N])-[bmim][Tf2N] composite membranes exhibit similar permeability selectivities as the standard [bmim][Tf2N] but permeabilities are enhanced up to 5 times higher than the equivalent polystyrene-RTIL and polyacrylate-RTIL membranes. An increase in [bmim][Tf2N] concentration of poly([vbim][Tf 2N])-[bmim][Tf2N] composite membranes results in an increase in solubility, diffusivity, and permeability coefficients of CO 2 and N2 but does not change the CO2/N 2 selectivities of the solubility, diffusivity, and permeability. The CO2 permeability of the 60 wt % composite at 35 °C, 10 atm is 559 barrers in pure gas tests which is closer to 60% of the [bmim][Tf 2N] permeability (i.e., 1344 barrers). In addition, the 60 wt % composite membrane exhibits a CO2 permeability of 491.2 barrers and a CO2/N2 selectivity of 20 in mixed gas tests using CO 2/N2 (50:50) as the feed. © 2011 American Chemical Society.|
|Source Title:||Industrial and Engineering Chemistry Research|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Dec 7, 2018
WEB OF SCIENCETM
checked on Nov 21, 2018
checked on Nov 23, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.