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Low-pressure CO2 sorption in ammonium-based poly(ionic liquid)s |
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| Authors: | Jianbin Tang Huadong Tang Weilin Sun Maciej Radosz Youqing Shen |
| Affiliation: | aDepartment of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China bSoft Materials Laboratory, Department of Chemical and Petroleum Engineering, University of Wyoming, Laramie, WY 82071, USA |
| Abstract: | Ammonium-based ionic liquid monomers and their corresponding polymers [poly(ionic liquid)s] are synthesized and characterized for CO2 sorption. The polymers have much higher CO2 sorption capacities than the room-temperature ionic liquids and imidazolium-based poly(ionic liquid)s. For example, P[VBTMA][PF6] with polystyrene backbone has a CO2 sorption capacity of 10.67 mol%. The CO2 sorption is selective over N2 and O2. The effects of cation, backbone, substituent, anion and crosslinking on CO2 sorption are discussed. The sorption mechanism study indicates that CO2 sorption by the poly(ionic liquid)s is a bulk and surface phenomenon. |
| Keywords: | Ionic liquids Poly(ionic liquid)s CO2 sorption |
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