High-pressure phase behavior of binary and ternary mixtures containing ionic liquid [C6-mim][Tf2N], dimethyl carbonate and carbon dioxide

Joon Yong Ahn, Byung Chul Lee, Jong Sung Lim, Ki Pung Yoo, Jeong Won Kang

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12 Citations (Scopus)


High-pressure phase equilibrium data for the ternary mixtures consisting of room temperature ionic liquid, dimethyl carbonate (DMC) and carbon dioxide (CO2) were measured using an equilibrium apparatus equipped with a variable-volume view cell. The ionic liquid studied in this work is 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide [C6-mim][Tf2N]. Solubility data of carbon dioxide (CO2) in the solvent mixtures of DMC and [C6-mim][Tf2N] with various compositions are presented at pressures up to about 7 MPa and at several temperatures between 303.15 and 333.15 K. The CO2 solubility in the DMC + [C6-mim][Tf2N] solvent mixture decreased as the ionic liquid content in the mixture increased, compared at the same pressure and temperature. The equilibrium pressure increased with the increase of the content of ionic liquid in the solvent mixture.

Original languageEnglish
Pages (from-to)75-79
Number of pages5
JournalFluid Phase Equilibria
Issue number1-2
Publication statusPublished - 2010 Mar 25



  • Carbon dioxide
  • Dimethyl carbonate
  • Ionic liquid
  • Solubility
  • Supercritical

ASJC Scopus subject areas

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

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