Chemical equilibria in the quaternary reactive mixtures and liquid phase splitting: a system with n-amyl acetate synthesis reaction at 318.15 K and 101.3 kPa

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Abstract

A new set of experimental data on chemically equilibrium compositions for the acetic acid – n-amyl alcohol – n-amyl acetate – water systems at 318.15 K and 101.3 kPa is presented. It was found that both homogeneous and heterogeneous regions of compositions correspond to the surface of chemical equilibrium. The values of compositions were obtained by gas chromatography analysis. The critical states of liquid–liquid equilibrium were experimentally determined by the “cloud point“ technique; the chemically equilibrium critical point was located. Corresponding diagrams in 3D (the composition tetrahedron) and 2D (the square of transformed compositions variables α) concentration spaces are constructed. The NRTL model was applied to correlate liquid–liquid equilibrium data. The concentration and thermodynamic constants of chemical equilibrium were calculated using UNIFAC model.

Original languageEnglish
Article number118246
JournalJournal of Molecular Liquids
Volume345
Early online date3 Dec 2021
DOIs
StatePublished - 1 Jan 2022

Scopus subject areas

  • Condensed Matter Physics
  • Spectroscopy
  • Physical and Theoretical Chemistry
  • Materials Chemistry

Keywords

  • Chemical equilibria
  • Critical states
  • N-amyl acetate
  • NRTL
  • UNIFAC

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