Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Liquid-liquid equilibria for azeotropic mixture of methyl tert-butyl ether and methanol with ionic liquids at different temperatures

Bai, Wenting, Dai, Yao, Pan, Xiangshuai, Zhu, Zhaoyou, Wang, Yinglong, Gao, Jun
J. Chem. Thermodyn. 2019, 132, 76-82
ABSTRACT
Searching for green solvents is imperative for the sustainable development of liquid-liquid extraction. Liquid-liquid equilibrium data for two ternary systems of methyl tert-butyl ether (MTBE) + methanol + N-methylimidazolium hydrosulfate ([MIM][HSO4]) and MTBE + methanol + 1-butyl-3-methylimidazolium hydrosulfate ([BMIM][HSO4]) were measured at 278.15 K, 298.15 K and 318.15 K at 101.325 kPa for this study. The values of the distribution coefficient and the separation factor were calculated based on the experimental data, and then, the extraction ability was determined. Factors affecting the phase behavior such as the nature of the ionic liquid and the temperature were discussed. NRTL and UNIQUAC models were applied to correlate the experimental tie-line data.
Compounds
# Formula Name
1 C5H12O 2-methoxy-2-methylpropane
2 CH4O methanol
3 C8H16N2O4S 1-butyl-3-methylimidazolium hydrogen sulfate
4 C4H8N2O4S 1-methylimidazolium hydrogen sulfate
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
  • Mass fraction - 1 ; Liquid mixture 2
  • Mass fraction - 2 ; Liquid mixture 1
  • Mass fraction - 1 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Mass fraction - 2; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 2
  • Liquid mixture 1
  • Chromatography
  • Chromatography
  • Chromatography
  • 21
  • POMD
  • 1
  • 2
  • 4
  • Mass fraction - 1 ; Liquid mixture 2
  • Mass fraction - 2 ; Liquid mixture 1
  • Mass fraction - 1 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Mass fraction - 2; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 2
  • Liquid mixture 1
  • Chromatography
  • Chromatography
  • Chromatography
  • 21