Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Non-random two-liquid modelling of switchable-hydrophilicity solvent systems: N,N-Dimethylcyclohexanamine, water, and toluene

Vanderveen, J. R.[Jesse R.], Canales, R. I.[Roberto I.], Quan, Y.[Yi], Chalifoux, C.[Courtney], Stadtherr, M. A.[Mark A.], Brennecke, J. F.[Joan F.], Jessop, P. G.[Philip G.]
Fluid Phase Equilib. 2016, 409, 150-156
ABSTRACT
Liquid-liquid phase equilibrium data for the ternary system of (water + N,N-dimethylcyclohexanamine + toluene) and the quaternary system of (water + N,N-dimethylcyclohexanamine + toluene + N,N-dimethylcyclohexanammonium bicarbonate) were collected at 303.15 K and atmospheric pressure. The experimental data for the ternary system were correlated by the Othmer-Tobias equation and Hand equation. The experimental data were compared with the results fit to the non-random two-liquid model. The distribution coefficients and separation factor values were evaluated for the immiscibility regions and their implications for switchable-hydrophilicity solvent based separations are discussed.
Compounds
# Formula Name
1 C8H17N N,N-dimethylcyclohexylamine
2 C7H8 toluene
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
  • 1
  • 2
  • 3
  • Mass fraction - 2 ; Liquid mixture 1
  • Mass fraction - 3 ; Liquid mixture 1
  • Mass fraction - 1 ; Liquid mixture 2
  • Mass fraction - 2 ; Liquid mixture 2
  • Mass fraction - 3 ; Liquid mixture 2
  • Mass fraction - 1; Liquid mixture 1
  • Temperature, K; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 1
  • Liquid mixture 2
  • Chromatography
  • Chromatography
  • Chromatography
  • Chromatography
  • Chromatography
  • 8