Journal of Solution Chemistry

, Volume 44, Issue 3–4, pp 824–837 | Cite as

Acoustic and Volumetric Properties of Diluted Solutions of Water in Ionic Liquids

  • Justyna Skowronek
  • Monika Geppert-Rybczyńska
  • Johan Jacquemin
  • Peter Goodrich
  • Jorge Alvarez Vicente
  • Mirosław Chorążewski
  • Sylwia Jężak
  • Michał Zorębski
  • Edward Zorębski
  • Monika Żarska
  • Wojciech Kaca
  • Paweł Berdyczko
  • Marzena Dzida


Herein, we report the densities and speeds of sound in binary mixtures of three hydrophobic and one hydrophilic ionic liquids: 1-butyl-3-methylimidazolium bis[(trifluoromethyl)sulfonyl]imide, [C4mim][NTf2], 1-butyl-1-methylpyrrolidinium bis[(trifluoromethyl)sulfonyl]imide, [C4mpyr][NTf2], 1-propyl-3-methylimidazolium bis[(trifluoromethyl)sulfonyl]imide, [C3mim][NTf2] and 1-ethyl-3-methylimidazolium thiocyanate, [C2mim][SCN], with water at 298.15 K and 0.1 MPa. The concentration range of water, which encompassed relatively small values well below the saturation point, is often regarded as an impurity for hydrophobic ionic liquids. On the basis of experimental results the molar volume, adiabatic molar compressibility, partial molar volume and apparent molar volume, as well as, partial molar and apparent molar isentropic compressibility properties were then calculated. Interesting results are obtained using the solutions based on the hydrophilic [C2mim][SCN], since these mixtures are characterized by relatively low density and high values of speed of sound. Furthermore, the partial molar volumes and partial molar adiabatic compressibilities of water in solution with [C2mim][SCN] are the lowest among the investigated in mixtures with ionic liquids. However, in the case of the hydrophobic ionic liquid solutions, only small differences are observed for molar adiabatic compressibilities with the change of the cation structure, i.e. for water + [C4mim][NTf2] or + [C4mpyr][NTf2]. A more pronounced difference has been observed for the partial molar compressibility of water in solutions with these two ionic liquids.


Ionic liquids Speed of sound Adiabatic compressibility Apparent and partial molar volume Apparent and partial molar compressibility 

Supplementary material

10953_2015_327_MOESM1_ESM.pdf (426 kb)
Electronic supplementary material: Figures S1– S13 contain 1H and 13C NMR spectra and TGA analysis of 1-propyl-3-methylimidazolium bis{(trifluoromethyl)sulfonyl}imide [C3mim][NTf2] and comparisons of apparent and partial molar volumes and adiabatic compressibilities of water in each ILs separately. (PDF 426 kb)


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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  • Justyna Skowronek
    • 1
  • Monika Geppert-Rybczyńska
    • 1
  • Johan Jacquemin
    • 2
  • Peter Goodrich
    • 2
  • Jorge Alvarez Vicente
    • 2
  • Mirosław Chorążewski
    • 1
  • Sylwia Jężak
    • 1
  • Michał Zorębski
    • 1
  • Edward Zorębski
    • 1
  • Monika Żarska
    • 1
  • Wojciech Kaca
    • 3
  • Paweł Berdyczko
    • 3
  • Marzena Dzida
    • 1
  1. 1.Institute of ChemistryUniversity of SilesiaKatowicePoland
  2. 2.The QUILL Research Centre, School of Chemistry and Chemical EngineeringQueen’s University of BelfastBelfastUK
  3. 3.DonservWarsawPoland

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