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

Measurement of CO2 Solubility in Ionic Liquids: [BMP][TfO] and [P14,6,6,6][Tf2N] by Measuring Bubble-Point Pressure

Song, H. N.[Ha Na], Lee, B.-C.[Byung-Chul], Lim, J. S.[Jong Sung]
J. Chem. Eng. Data 2010, 55, 2, 891-896
ABSTRACT
Solubility data of carbon dioxide (CO2) in ionic liquids 1-butyl-1-methylpyrrolidinium trifluoromethanesulfonate ([BMP][TfO]) and trihexyltetradecylphosphonium bis(trifluoro-methylsulfonyl)imide ([P14,6,6,6][Tf2N]) are presented at pressures up to about 70 MPa and at temperatures between (303.15 and 373.15) K. The solubility of CO2 in ionic liquids was measured by using a high-pressure variable-volume view cell. At high CO2 concentrations in ionic liquids, the equilibrium pressure increased very steeply. The solubility of CO2 in the ionic liquids decreased with increasing temperature. The experimental data for the CO2 + ionic liquid system were correlated using the Peng-Robinson equation of state.
Compounds
# Formula Name
1 C10H20F3NO3S 1-butyl-1-methylpyrrolidinium trifluoromethanesulfonate
2 C34H68F6NO4PS2 trihexyl(tetradecyl)phosphonium bis[(trifluoromethyl)sulfonyl]imide
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:16
  • 64
  • POMD
  • 3
  • 2
  • Vapor or sublimation pressure, kPa ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 3; Liquid
  • Liquid
  • Gas
  • CCELL:UFactor:16
  • 90