Measurement and correlation of solubility of carbon dioxide in 1-alkyl-3-methylimidazolium hexafluorophosphate ionic liquids

Ji Eun Kim, Jong Sung Lim, Jeong Won Kang

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

The solubility of carbon dioxide in the ionic liquids 1-butyl-3-methylimidazolium hexafluorophosphate and 1-nonyl-3-methylimidazolium hexafluorophosphate was measured at temperatures of 293.15 and 298.15. K and pressure up to 4. MPa using a stoichiometric phase equilibrium apparatus. The measured data for 1-butyl-3-methylimidazolium hexafluorophosphate were in good agreement with existing literature data and new solubility data were reported for 1-nonyl-3-methylimidazolium hexafluorophosphate. The measured data were correlated using the group contribution non-random lattice fluid equation of state (GC-NLF EoS) proposed by Lee and co-workers. The group parameters for CG-NLF EoS were slightly modified at limited range to accommodate recent experimental data and better prediction at high pressure and long alkyl chains.

Original languageEnglish
Pages (from-to)251-255
Number of pages5
JournalFluid Phase Equilibria
Volume306
Issue number2
DOIs
Publication statusPublished - 2011 Jul 25

Keywords

  • Carbon dioxide
  • Ionic liquid
  • Nonrandom lattice fluid equation of state
  • Phase equilibrium

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Physical and Theoretical Chemistry
  • Physics and Astronomy(all)

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