Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Solubility of carbon dioxide in ammonium based CO2-inducedionic liquids

Zakrzewska, M. E.[Malgorzata E.], Rosatella, A. A.[Andreia A.], Simeonov, S. P.[Svilen P.], Afonso, C. A. M.[Carlos A.M.], Najdanovic-Visak, V.[Vesna], da Ponte, M. N.[Manuel Nunes]
Fluid Phase Equilib. 2013, 354, 19-23
ABSTRACT
The solubility of carbon dioxide in ionic liquids was measured in a new apparatus. The ionic liquids chosen have ammonium-based cations and show melting temperature decreases under CO2 pressure that rangefrom low (25 K) to extremely high (120 K). The main purpose of this study was to check whether the solubility of the gas in each liquid could explain the previously reported wide differences in meltingpoint depression (MPD). The results show there is no correlation between solubility and MPD.
Compounds
# Formula Name
1 C24H52BrN tetrahexylammonium bromide
2 C16H36BF4N tetrabutylammonium tetrafluoroborate
3 C32H61NO3S trioctylmethylammonium tosylate
4 C33H60N2O3S didodecyldimethylammonium saccharine
5 C26H54F3NO3S methyltrioctylammonium triflate
6 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
  • 6
  • 3
  • Mole fraction - 6 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Gas
  • Phase equilibration
  • 6
  • POMD
  • 6
  • 5
  • Mole fraction - 6 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Gas
  • Phase equilibration
  • 6
  • POMD
  • 4
  • 6
  • Mole fraction - 6 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Gas
  • Phase equilibration
  • 1
  • POMD
  • 6
  • 1
  • Mole fraction - 6 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Gas
  • Phase equilibration
  • 1
  • POMD
  • 6
  • 2
  • Mole fraction - 6 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Gas
  • Phase equilibration
  • 1