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

Low-Pressure Solubility and Thermodynamics of Solvation of Carbon Dioxide, Ethane, and Hydrogen in 1-Hexyl-3-methylimidazolium Bis(trifluoromethylsulfonyl)amide between Temperatures of 283 K and 343 K

Costa Gomes, M. F.
J. Chem. Eng. Data 2007, 52, 2, 472-475
ABSTRACT
The solubility of carbon dioxide, ethane, and hydrogen was determined experimentally in 1-hexyl-3- methylimidazolium bis(trifluoromethylsulfonyl)amidesa room-temperature ionic liquidsas a function of temperature between 283 K and 343 K and close to atmospheric pressure. Carbon dioxide is the most soluble, and hydrogen is the least soluble of the gases studied with mole fraction solubilities of the order of 10-2 and 10-4, respectively. All the mole fraction solubilities decrease with increasing temperature, behavior typical of exothermal processes of solvation. From the variation of Henry s law constants with temperature, the partial molar thermodynamic functions of solvation, such as the standard Gibbs energy, the enthalpy, and the entropy, are calculated. The total uncertainty of the experimental data is in all cases better than (3 %.
Compounds
# Formula Name
1 CO2 carbon dioxide
2 C2H6 ethane
3 H2 hydrogen
4 C12H19F6N3O4S2 1-hexyl-3-methylimidazolium bis[(trifluoromethyl)sulfonyl]imide
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
  • 1
  • 4
  • Mole fraction - 1 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Gas
  • pressure drop on dissolution
  • 11
  • POMD
  • 2
  • 4
  • Mole fraction - 2 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Gas
  • pressure drop on dissolution
  • 10
  • POMD
  • 3
  • 4
  • Mole fraction - 3 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Gas
  • pressure drop on dissolution
  • 11