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

Effect of Water Content on the Solubility of CO2 in the Ionic Liquid [bmim][PF6]

Fu, D.[Dongbao], Sun, X.[Xuewen], Pu, J.[Jinjun], Zhao, S.[Suoqi]
J. Chem. Eng. Data 2006, 51, 2, 371-375
ABSTRACT
The solubility of CO2 in the ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate ([bmim][PF6]) and the liquid-phase molar volume were determined, in a precision high-pressure PVT apparatus, for water mass fraction of [bmim][PF6] ranging from 0.0067 % to 1.6 % and over temperature and pressure ranges of (40 to 60) deg C and (1 to 25) MPa. The deviation in solubility, at the same temperature and pressure, with different water mass fractions was not more than 15 %, and the average is 6.7 %. Solubility pressures were correlated with an average relative uncertainty of about 1 % by means of the extended Henry s law for all water mass fractions investigated at less than 6 MPa.
Compounds
# Formula Name
1 C8H15F6N2P 1-butyl-3-methylimidazolium hexafluorophosphate
2 CO2 carbon dioxide
3 H2O water
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
  • Mass density, kg/m3 ; Liquid
  • Mass fraction - 3; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Vibrating tube method
  • 4
  • POMD
  • 2
  • 3
  • 1
  • Molar volume, m3/mol ; Liquid
  • Mass fraction - 3; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Gas
  • Pycnometric method
  • 123
  • POMD
  • 2
  • 3
  • 1
  • Mole fraction - 2 ; Liquid
  • Mass fraction - 3; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Gas
  • Phase equilibration
  • 123