Hollow fiber membranes have been successfully employed in a wide variety of applications including municipal water and wastewater treatment, industrial biotechnology, and gas separation in the food, beverage, petroleum, and natural gas industries. Compared with other common membrane geometries including plate and frame (300 m�/m�) and spiral wound (600 m�/m�), hollow fiber membranes are typically able to achieve as high surface area per unit volume as 20000 m�/m�, resulting in a cost-effective separation solution requiring less space and power consumption.Taking advantage of their energy efficiency and economical advantages, supported ionic liquid hollow fiber membranes (SILHFMs) have the potential to attract considerable interest in the dramatically growing CO2 capture area. The introduction of ionic liquids to the hollow fiber membranes is advantageous because of the unique properties of the ILs, including negligible vapor pressure, thermal stability above 200 oC, and functional diversity. Specifically, imidazolium-based ionic liquids have demonstrated excellent CO2 solubility and permeability selectivity relative to other light gases, such as N2, CH4 and H2.In this study, two types of hollow fiber supports were prepared by commercially available polyimides, Matrimid� and Torlon�, due to their inherent and excellent mechanical properties. 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([hmim][Tf2N]), a well studied IL, was loaded into the membranes. The permselectivity for CO2/H2 was measured, and the relationship between the mechanical and gas transport properties of the membranes was investigated.

Application of supported ionic liquid hollow fiber membranes (SILHFM) in CO<sub>2</sub> capture

245th National Meeting (2013)

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Application of supported ionic liquid hollow fiber membranes (SILHFM) in CO2 capture

Application of supported ionic liquid hollow fiber membranes (SILHFM) in CO₂ capture