Quaternary liquid-liquid equilibrium, solubility and critical states: Acetic acid - n-butanol - n-butyl acetate - water at 318.15 K and atmospheric pressure

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7 Scopus citations

Abstract

Experimental data on solubility, critical states and liquid–liquid equilibrium (LLE) for the quaternary system acetic acid – n-butanol – n-butyl acetate – water and ternary subsystems acetic acid – n-butanol – water, n-butanol – n-butyl acetate – water and acetic acid – n-butyl acetate – water were obtained at 318.15 K and at atmospheric pressure. The solubility and critical states were studied by isothermal titration method (“cloud-point technique”). The LLE was determined using gas chromatographic analysis. Binodal surface in quaternary system and binodal curves in ternary systems were constructed. Compositions of critical points (plait points) and critical curve were determined. The NRTL model was applied to calculate the LLE data for the quaternary and ternary systems. The results of NRTL modeling are in good agreement with the experimental data.

Original languageEnglish
Pages (from-to)102-108
Number of pages7
JournalFluid Phase Equilibria
Volume493
DOIs
StatePublished - 1 Aug 2019

Scopus subject areas

  • Physics and Astronomy(all)
  • Chemical Engineering(all)
  • Physical and Theoretical Chemistry

Keywords

  • Critical phenomena
  • Liquid-liquid equilibrium
  • Solubility
  • n-butyl acetate
  • ESTER
  • SYSTEM
  • PHASE
  • ALCOHOL
  • PROPIONATE-WATER
  • ETHYL-ACETATE
  • ETHANOL
  • PROPYL ACETATE
  • PROPANOL

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