Speeds of sound and densities in imidazolium-based ionic liquids under elevated pressures: New experimental data and modelling by spinodal method and CP-PC-SAFT

Jeremiasz Pilarz, Joanna Feder-Kubis, Eugene Postnikov, Vyacheslav V. Melent'ev, Olga S. Ryshkova, Vadim I. Korotkovskii, Anton K. Radchenko, Michał Wasiak, Ilya Polishuk, Mirosław Chorążewski

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2 Scopus citations

Abstract

In this study reports a comprehensive physicochemical experimental characterization of a homologous series of ionic liquids containing 3-ethyl-1-alkoxymethylimidazolium bis(trifluoromethylsulfonyl)imide with linear n-alkyl chains in an alkoxymethyl substituent from the hexyl up to the decyl group. An influence of the n-alkyl chain length on the thermophysical properties was investigated in the temperature and pressure ranges 293.75 – 373.25 K and 1.019 – 1962 bar. Accuracies of the Critical Point-Based Perturbed-Chain Statistical Associating Fluid Theory (CP-PC-SAFT) and the spinodal method in modelling these data were compared.

Original languageEnglish
Article number106905
JournalJournal of Chemical Thermodynamics
Volume176
DOIs
StatePublished - Jan 2023

Keywords

  • Bis(trifluoromethylsulfonyl)imide anion
  • CP-PC-SAFT EoS
  • Ionic Liquids
  • Quaternary imidazolium salts
  • Speed of sound
  • Spinodal
  • Thermodynamics

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