(814f) Polymerized Pyrrolidinium-Based Ionic Liquid Membranes for CO2 Capture

Ionic liquids (ILs) are salts with melting points below 100°C. They have been utilized for CO₂ capture due to some of their unique properties like high viscosity, low vapor pressure, and thermal and chemical stability. Utilizing IL membranes for CO₂ capture highlights the both properties of ILs and advantages of membrane technologies. Currently, supported IL membranes (SILMs) are playing a major role in the area of CO₂ capture. Such SLIMs have been fabricated with supported gelled and polymerized ILs.  In SILMs, the use of porous supporting membrane materials, such as PVDF membranes or other organic frameworks, decreases the contact area of CO₂ and the effective IL components, which leads to lower capture efficiency. In this work, we are reporting IL membranes forming using only polymerized ILs without support materials. These membranes are then characterized and studied for their ability to capture CO₂ and to better understand the separation mechanism especially in terms of the cation and anion components.