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

Measurement and Modeling of Phase Equilibria for Ethanol + Water + Methanol at Isobaric Condition

Resa, J. M.[Jose M.], Goenaga, J. M.[Jose M.]
J. Chem. Eng. Data 2006, 51, 6, 2114-2120
ABSTRACT
This work reports the phase behavior of the ternary system ethanol + water + methanol at 101.3 kPa. Prediction of activity coefficients and equilibrium compositions with different UNIFAC group contribution models showed poor agreement. Consistency of experimental data was tested by the McDermott-Ellis method. The lack of experimental data in multicomponent alcoholic distillation mixtures and the low reliability of the group contribution methods suggest a prudent work into simulation of this kind of distillation processes.
Compounds
# Formula Name
1 C2H6O ethanol
2 CH4O methanol
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
  • Refractive index (Na D-line) ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Standard Abbe refractometry
  • 1
  • POMD
  • 2
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • VIBTUB:UFactor:2
  • 1
  • POMD
  • 1
  • 2
  • 3
  • Mole fraction - 3 ; Liquid
  • Mole fraction - 3 ; Gas
  • Mole fraction - 1 ; Gas
  • Temperature, K; Liquid
  • Mole fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Gas
  • Density calibration data
  • Density calibration data
  • Density calibration data
  • 110