Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Liquid-liquid equilibria for ternary systems water + acetic acid + 1,2,4-trimethylbenzene and water + acetic acid + 1,3,5- trimethylbenzene at (303.2 - 343.2) K

Shen, Z.[Zhipeng], Wang, Q.[Qinbo], Chen, L.[Linhui], Xiong, Z.[Zhenhua], Chen, C.[Chuxiong]
Fluid Phase Equilib. 2016, 414, 48-54
ABSTRACT
Liquid-liquid equilibria (LLE) data for the ternary systems of water + acetic acid + 1,2,4- trimethylbenzene and water + acetic acid + 1,3,5-trimethylbenzene were measured under atmospheric pressure at (303.2 - 343.3) K. The reliability of the experimentally determined tie-line data was verified by comparison with the literature data. Both the nonrandom two-liquid (NRTL) and the universal quasi-chemical activity coefficient (UNIQUAC) models were adopted to correlate the experimental LLE data, and the binary model interaction parameters were obtained. The RMSD values as low as 0.89% and 0.51% were obtained for the two models, respectively, which shows that the experimental LLE data have been successfully correlated by both the NRTL and the UNIQUAC models. The relevant model parameters could be useful for the simulation and optimization of the related separation process. Moreover, the distribution coefficient and separation factor of acetic acid in the two ternary systems were calculated and discussed in detail.
Compounds
# Formula Name
1 C2H4O2 acetic acid
2 C9H12 1,2,4-trimethylbenzene
3 C9H12 1,3,5-trimethylbenzene
4 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
  • 4
  • Mass fraction - 2 ; Liquid mixture 2
  • Mass fraction - 2 ; Liquid mixture 1
  • Mass fraction - 1 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Mass fraction - 1; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 2
  • Liquid mixture 1
  • Chromatography
  • Chromatography
  • Chromatography
  • 50
  • POMD
  • 1
  • 3
  • 4
  • Mass fraction - 3 ; Liquid mixture 2
  • Mass fraction - 3 ; Liquid mixture 1
  • Mass fraction - 1 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Mass fraction - 1; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 2
  • Liquid mixture 1
  • Chromatography
  • Chromatography
  • Chromatography
  • 50