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

Measurement and Correlation of Phase Equilibria for Dodecane + sec-Butylbenzene + N-Methyl-2-pyrrolidone

Aljimaz, A. S.[Adel S.], Fandary, M. S.[Mohamed S.], Al-Kandary, J. A.[Jasem A.], Fahim, M. A.[Mohamed A.]
J. Chem. Eng. Data 2005, 50, 5, 1740-1746
ABSTRACT
Measurement and correlation of phase equilibria for the ternary system dodecane + sec-butylbenzene + N-methyl-2-pyrrolidone (NMP) were carried out over a temperature range of (288.15 to 318.15) K and at atmospheric pressure. Such a system is found in the extraction of aromatics in the production of middle distillate. The system studied exhibits type I liquid-liquid phase diagram. The values of distribution coefficients and selectivities were calculated from the equilibrium data. The effect of temperature and solute concentration in the feed upon solubility, distribution coefficient, and selectivity were investigated experimentally and theoretically. The experimental results of the studied system was regressed to estimate the interaction parameters between each of the three pairs of components with NRTL and UNIQUAC models as a function of temperature. Both models satisfactorily correlate the experimental data; however, the UNIQUAC fit was slightly better than that obtained with the NRTL model.
Compounds
# Formula Name
1 C12H26 dodecane
2 C10H14 (1-methylpropyl)benzene
3 C5H9NO N-methylpyrrolidone
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
  • Upper consolute temperature, K ; Liquid mixture 1
  • Mole fraction - 3; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • VISOBS:UFactor:2
  • 23
  • POMD
  • 1
  • 2
  • 3
  • Mole fraction - 2 ; Liquid mixture 1
  • Mole fraction - 2 ; Liquid mixture 2
  • Mole fraction - 1 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 1
  • Mole fraction - 1; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Chromatography
  • Chromatography
  • Chromatography
  • 31