This work describes newly synthesized composite polymeric membranes and their utilization in propane/propylene separation in a gas mixture. The nonporous composite polymers were successfully synthesized by using thermoplastic polyurethane (TPU) and several silver salts/silver salts with ionic liquids (ILs). Our studies showed that silver bis(trifluoromethanesulfonyl)imide (Ag[Tf2N]) containing membranes outperformed other silver salt containing membranes in terms of selectivity. In addition, to this finding, ILs, as additives for the membranes, enhanced the selectivity by facilitating improved coordination of the olefin with the silver ions in the dense composite polymers.
- Membrane separation
- Composite polymer
- Ionic liquids
- Propane/propylene separation
Wang, Y., Yong Goh, T., Goodrich, P., Atilhan, M., Khraisheh, M., Rooney, D., Thompson, J., & Jacquemin, J. (2020). Impact of Ionic Liquids on Silver Thermoplastic Composite Membrane Polyurethane for Propane/Propylene Separation. Arabian Journal of Chemistry, 13(1), 404-415. https://doi.org/10.1016/j.arabjc.2017.05.008