Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

Phase Equilibria of the 1-Hexyl-2,3-dimethylimidazolium Bis(trifluoromethylsulfonyl)imide and Carbon Dioxide Binary System and 1-Octyl-2,3-dimethylimidazolium Bis(trifluoromethylsulfonyl)imide and Carbon Dioxide Binary System

Hwang, S. Y.[Se Yeon], Park, Y.[YoonKook], Park, K.[Kyungmoon]
J. Chem. Eng. Data 2012, 57, 8, 2160-2164
ABSTRACT
A high-pressure variable-volume view cell was used to measure the phase equilibria of a 1-hexyl-2,3-dimethylimidazolium bis(trifluoromethylsulfonyl)imide ([HMMIM][Tf2N]) and CO2 binary system in the temperature range of (298.2 to 323.2) K at intervals of 5.0 K. In addition, the vapor liquid equilibrium of a 1-octyl-2,3-dimethylimidazolium bis(trifluoromethylsulfonyl)imide ([OMMIM][Tf2N]) and CO2 binary system was determined in the temperature range (288.2 to 323.2) K at 5.0 K intervals. The Peng Robinson equation of state with the van der Waals two-parameter mixing rule was used to correlate the vapor liquid equilibria of CO2 and ionic liquids. The effect of the alkyl chain length in the cation on the phase behavior of a trisubstituted-imidazolium-cation-based ionic liquid and CO2 binary system was investigated.
Compounds
# Formula Name
1 C13H21F6N3O4S2 1-hexyl-2,3-dimethylimidazolium bis[(trifluoromethyl)sulfonyl]imide
2 C15H25F6N3O4S2 2,3-dimethyl-1-octyl-1H-imidazolium bis(trifluoromethylsulfonyl)amide
3 CO2 carbon dioxide
Datasets
The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type Compound-# Property Variable Constraint Phase Method #Points
  • POMD
  • 3
  • 1
  • Vapor or sublimation pressure, kPa ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 3; Liquid
  • Liquid
  • Gas
  • CCELL:UFactor:4
  • 39
  • POMD
  • 3
  • 2
  • Vapor or sublimation pressure, kPa ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 3; Liquid
  • Liquid
  • Gas
  • CCELL:UFactor:8
  • 61