DOI

Deep eutectic solvents (DESs) formed by choline chloride and urea or glycerol were tested for the separation of azeotropic mixtures. The case study was the separation of ethanol–ethyl propionate and n-propanol–n-propyl propionate. For this aim, the experimental data of liquid–liquid equilibria (LLEs) were obtained at temperature 293.15 K and atmospheric pressure. Liquid–liquid tie lines were determined using NMR spectroscopy and analyzed. The extraction performance of DESs was characterized with distribution coefficients and values of selectivity to alcohol. Comparison of selectivity values in systems containing alcohols and esters with another DES formed by choline chloride and malonic acid was carried out. The NRTL model for LLE data correlation was used. The model is shown to give rather good estimates for the selectivity values.
Original languageEnglish
Pages (from-to)5545-5552
Number of pages8
JournalJournal of Chemical & Engineering Data
Volume65
Issue number11
DOIs
StatePublished - 12 Nov 2020

    Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

ID: 70785791