Imidazolium-Based Poly(ionic liquid)s as New Alternatives for CO2 Capture.

Elena I. Privalova, Erno Karjalainen, Mari Nurmi, Päivi Mäki-Arvela, Kari Eränen, Heikki Tenhu, Dmitry Yu Murzin, Jyri-Pekka Mikkola

Research output: Contribution to journalArticleScientificpeer-review

81 Citations (Scopus)


Solid imidazolium-based poly(ionic liq.)s with variable mol. wts. 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 liqs. with similar counter-anions. In addn. to poly(ionic liq.)s with often-applied ions such as BF4-, PF6-, NTf2-, trifluoromethanesulfonate (OTf-) and Br-, for the 1st time [BIEMA][acetate] was synthesized, which revealed a remarkably high CO2 sorption performance that exceeded the poly(ionic liq.)s studied previously on av. by a factor of four (12.46 mg/gPIL). 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. Also, all the studied sorbents were reusable if regenerated under carefully selected conditions and can be considered as suitable candidates for CO2 sorption. [on SciFinder(R)]
Original languageEnglish
Pages (from-to)1500-1509
Number of pages10
Issue number8
Publication statusPublished - 2013
MoE publication typeA1 Journal article-refereed


  • Polymerization (RAFT
  • imidazolium-based poly(ionic liq.)s as new alternatives for CO2 capture)
  • Ionomers Role: NUU (Other use
  • unclassified)
  • PEP (Physical
  • engineering or chemical process)
  • PRP (Properties)
  • PUR (Purification or recovery)
  • SPN (Synthetic preparation)
  • PREP (Preparation)
  • PROC (Process)
  • USES (Uses) (acrylic
  • Onium compounds Role: NUU (Other use
  • USES (Uses) (imidazolium compounds
  • Absorbents
  • Ion exchange
  • Molecular structure-property relationship (imidazolium-based poly(ionic liq.)s as new alternatives for CO2 capture)
  • Polyoxyalkylenes Role: MOA (Modifier or additive use)
  • NUU (Other use
  • USES (Uses) (imidazolium-based poly(ionic liq.)s as new alternatives for CO2 capture)
  • Ionic liquids (polymeric
  • Molecular structure-property relationship (sorption
  • imidazolium
  • polyionic
  • liq
  • Carbon
  • dioxide
  • absorbent
  • ionomer
  • counterion
  • effect


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