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

Article Solubility and Diffusion of H2S and CO2 in the Ionic Liquid 1-(2-Hydroxyethyl)-3-methylimidazolium Tetrafluoroborate

Shokouhi, M.[Mohammad], Adibi, M.[Mina], Jalili, A. H.[Amir Hossein], Hosseini-Jenab, M.[Masih], Mehdizadeh, A.[Ali]
J. Chem. Eng. Data 2010, 55, 4, 1663-1668
ABSTRACT
The solubilities and diffusion coefficients of hydrogen sulfide and carbon dioxide gases in the ionic liquid (IL) 1-(2-hydroxyethyl)-3-methylimidazolium tetrafluoroborate ([hemim][BF4]), at temperatures ranging from (303.15 to 353.15) K and pressures up to 1.1 MPa, were determined. The solubility data were correlated using the Krichevsky-Kasarnovsky equation, and Henry s law constants at different temperatures were obtained. From the solubility data, the partial molar thermodynamic functions of solution such as Gibbs energy, enthalpy, and entropy were calculated. The diffusion coefficients were obtained for H2S and CO2 using a semi-infinite volume approach, and a correlation equation with temperature is presented for each gas. A comparison showed that the solubility of H2S was about three times its magnitude, and its diffusion coefficient is of the same order of magnitude as that of CO2 in the IL studied in this work.
Compounds
# Formula Name
1 CO2 carbon dioxide
2 H2S hydrogen sulfide
3 C6H11BF4N2O 1-(2-hydroxyethyl)-3-methylimidazolium tetrafluoroborate
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
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Pycnometric method
  • 6
  • POMD
  • 1
  • 3
  • Binary diffusion coefficient, m2/s ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 1; Liquid
  • Liquid
  • Gas
  • measurement of pressure
  • 6
  • POMD
  • 1
  • 3
  • Mole fraction - 1 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Gas
  • Gas Volume Before and After Dissolution
  • 44
  • POMD
  • 2
  • 3
  • Binary diffusion coefficient, m2/s ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 2; Liquid
  • Liquid
  • Gas
  • measurement of pressure
  • 6
  • POMD
  • 2
  • 3
  • Mole fraction - 2 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Gas
  • Gas Volume Before and After Dissolution
  • 51