Excess molar volumes and viscosity behaviour of binary mixtures of aniline/or N, N-dimethylaniline with imidazolium ionic liquids having triflate or bistriflamide anion

Danijela Soldatović, Jelena Vuksanović, Ivona Radović, Zoran Višak*, Mirjana Kijevčanin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

In this study, densities and viscosities of four binary systems {aniline / N, N-dimethylaniline+1-butyl-3-methylimidazolium triflate ([bmim][OTf])} and {aniline/N, N-dimethylaniline + 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([bmim][NTf2])} were measured at atmospheric pressure and within the temperature range T = (288.15 to 333.15) K. Excess molar volumes VE, viscosity deviations Δη and excess molar Gibbs energies of activation of viscous flow ∆G∗E were calculated and the results were fitted to a Redlich-Kister polynomial equation. Also, enthalpic and entropic parts of the ∆G∗E function were determined, at the same composition, for three studied systems that exhibit complete miscibility, since {aniline + [bmim][OTf]} is a partially miscible system. Considering the calculated thermodynamic properties, molecular interactions in the investigated binary systems were analysed and are discussed.
Original languageEnglish
Pages (from-to)137-154
JournalThe Journal of Chemical Thermodynamics
Volume109
Early online date14 Feb 2017
DOIs
Publication statusPublished - 1 Jun 2017

Bibliographical note

© 2016, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

Keywords

  • aniline
  • density
  • excess molar Gibbs free energy
  • ionic liquids
  • N,N-dimethylaniline
  • viscosity

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