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

Liquid-Liquid Equilibrium for the System Heptane + o-Xylene + Diethylene Glycol over the Temperature Range of 288.15 K to 318.15 K

Ashour, I.[Ibrahim], Abdulkarim, M. A. A.[Mohamed A.]
J. Chem. Eng. Data 2005, 50, 3, 924-927
ABSTRACT
Liquid-liquid equilibrium data for the system heptane + o-xylene + diethylene glycol have been experimentally measured over the temperature range of 288.15 to 318.15 K. The equilibrium data of this study are analyzed using the UNIQUAC, NRTL, UNIFAC, UNIFAC-LL, and UNIFAC-DMD models as programmed by the Aspen Plus simulator. On the basis of the analyses of the experimental data of this work, UNIFAC-LL showed the best predictive performance for the mole fraction of the target species (o-xylene) in both upper (heptane-rich) and lower (DEG-rich) phases, whereas UNIFAC-DMD showed poor predictive performance in comparison with the other models.
Compounds
# Formula Name
1 C4H10O3 diethylene glycol
2 C7H16 heptane
3 C8H10 1,2-dimethylbenzene
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
  • Mole fraction - 1 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • CHROM:UFactor:4
  • 4
  • POMD
  • 1
  • 2
  • Mole fraction - 1 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 2
  • Liquid mixture 1
  • CHROM:UFactor:4
  • 4
  • POMD
  • 3
  • 1
  • 2
  • Mole fraction - 1 ; Liquid mixture 1
  • Mole fraction - 1 ; Liquid mixture 2
  • Mole fraction - 3 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 1
  • Mole fraction - 3; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • CHROM:UFactor:4
  • CHROM:UFactor:4
  • CHROM:UFactor:4
  • 27