title: Imidazolium-based poly(ionic liquid)s as new alternatives for CO2 capture.
abstract: Solid imidazolium-based poly(ionic liquid)s with variable molecular weights that contain the poly[2-(1-butylimidazolium-3-yl)ethyl methacrylate] (BIEMA) cation and different counter anions were evaluated in terms of CO2 capture and compared with classical ionic liquids with similar counter anions. In addition to poly(ionic liquid)s with often-applied ions such as BF4 (-) , PF6 (-) , NTf2 (-) , trifluoromethanesulfonate (OTf(-) ) and Br(-) , for the first time [BIEMA][acetate] was synthesised, which revealed a remarkably high CO2 sorption performance that exceeded the poly(ionic liquid)s studied previously on average by a factor of four (12.46 mg gPIL (-1) ). This study provides an understanding of the factors that affect CO2 sorption and a comparison of the CO2 capture efficiency with the frequently used sorbents. Moreover, all the studied sorbents were reusable if regenerated under carefully selected conditions and can be considered as suitable candidates for CO2 sorption.
authors.affiliation: Process Chemistry Centre, Laboratory of Industrial Chemistry and Reaction Engineering, Åbo Akademi University, 20500 Turku/Åbo, Finland.
authors.forename: Elena I
authors.initials: EI
authors.lastname: Privalova
authors.forename: Erno
authors.initials: E
authors.lastname: Karjalainen
authors.forename: Mari
authors.initials: M
authors.lastname: Nurmi
authors.forename: Päivi
authors.initials: P
authors.lastname: Mäki-Arvela
authors.forename: Kari
authors.initials: K
authors.lastname: Eränen
authors.forename: Heikki
authors.initials: H
authors.lastname: Tenhu
authors.forename: Dmitry Yu
authors.initials: DY
authors.lastname: Murzin
authors.forename: Jyri-Pekka
authors.initials: JP
authors.lastname: Mikkola
mesh_terms: D002245:Carbon Dioxide / Q000737:chemistry* / Q000302:isolation & purification*; D007093:Imidazoles / Q000737:chemistry*; D052578:Ionic Liquids / Q000737:chemistry*; D008970:Molecular Weight; D011108:Polymers / Q000737:chemistry*; D011109:Polymethacrylic Acids / Q000737:chemistry*
chemical_list: D007093:Imidazoles; D052578:Ionic Liquids; D011108:Polymers; D011109:Polymethacrylic Acids; D002245:Carbon Dioxide
keywords: carbon dioxide fixation; carbon storage; ionic liquids; polycations; polymers