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

Effect of Temperature on Phase Equilibrium of the Mixed-Solvent System of (2,2,2-Trifluoroethanol + Methanol + Cyclohexane)

Atik, Z.[Zadjia], Kerboub, W.[Wahiba]
J. Chem. Eng. Data 2009, 54, 2, 282-285
ABSTRACT
An experimental study was carried out to construct a type II phase diagram of the liquid-liquid equilibrium of the mixed solvents of (2,2,2-trifluoroethanol + methanol + cyclohexane) at the temperatures T ) (283.15, 293.15, 303.15, and 313.15) K, and under atmospheric pressure of 101.2 kPa. Gas-liquid chromatography was used to obtain the mole fractions of the tie line ends of the two liquid phases at equilibrium. The NRTL and UNIQUAC equations reproduced satisfactorily all the measured data with an average root-mean-square deviation in phase-mole fractions equal to 1.04 %. The binary intermolecular interactions governing the mixture of unlike molecules were estimated by means of the same equations. The temperature effect on the system miscibility is slightly more significant on the cyclohexane-rich phase than on the (trifluoroethanol + methanol)-rich phase.
Compounds
# Formula Name
1 C7H16 heptane
2 CH4O methanol
3 C3H8O propan-2-ol
4 C6H12 cyclohexane
5 C2H3F3O 2,2,2-trifluoroethanol
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
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • VIBTUB:UFactor:4
  • 1
  • POMD
  • 2
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • VIBTUB:UFactor:3
  • 1
  • POMD
  • 3
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • VIBTUB:UFactor:4
  • 1
  • POMD
  • 4
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • VIBTUB:UFactor:2
  • 1
  • POMD
  • 5
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • VIBTUB:UFactor:5
  • 1
  • POMD
  • 2
  • 5
  • 4
  • Mole fraction - 5 ; Liquid mixture 1
  • Mole fraction - 5 ; Liquid mixture 2
  • Mole fraction - 2 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 2
  • Mole fraction - 2; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • CHROM:UFactor:16
  • CHROM:UFactor:16
  • CHROM:UFactor:16
  • 50