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Imidazolium‐Based Poly(ionic liquid)s as New Alternatives for CO 2 Capture
Author(s) -
Privalova Elena I.,
Karjalainen Erno,
Nurmi Mari,
MäkiArvela Päivi,
Eränen Kari,
Tenhu Heikki,
Murzin Dmitry Yu.,
Mikkola JyriPekka
Publication year - 2013
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201300120
Subject(s) - ionic liquid , sorption , trifluoromethanesulfonate , chemistry , ion , methacrylate , tetrafluoroborate , inorganic chemistry , organic chemistry , catalysis , copolymer , adsorption , polymer
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 CO 2 capture and compared with classical ionic liquids with similar counter anions. In addition to poly(ionic liquid)s with often‐applied ions such as BF 4 − , PF 6 − , NTf 2 − , trifluoromethanesulfonate (OTf − ) and Br − , for the first time [BIEMA][acetate] was synthesised, which revealed a remarkably high CO 2 sorption performance that exceeded the poly(ionic liquid)s studied previously on average by a factor of four (12.46 mg g PIL −1 ). This study provides an understanding of the factors that affect CO 2 sorption and a comparison of the CO 2 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 CO 2 sorption.