Volumetric properties of binary mixtures of the ionic liquid 1-butyl-3- methylimidazolium tetrafluoroborate with alkanols at temperature range (298.15 to 313.15 K)

S. Ijardar1

1S.V. National Institute of Technology, Surat, Gujarat, India

Keywords: density
property: excess molar volumes, partial molar volumes, apparent molar volumes
material: 1-butyl-3-methylimidazolium tetrafluoroborate, alkanols

Scientific and technological interest in the properties of RTILs and their mixtures with other solvent is rapidly increasing [1], while their volumetric properties have not yet been studied systematically. In this contribution The densities of the binary mixtures formed by 1-butyl-3-methylimidazolium tetrafluoroborate [bmim][BF4] with Alkanols (1-butanol, 1-hexanol and  1-octanol) have been determined over whole range of compositions at the temperature range from 298.15 to 313.15 K and at atmospheric pressure using a vibrating-tube densimeter (DSA 5000). Excess molar volumes VEm have been obtained from these experimental results, and been fitted by the Redlich–Kister equation. In addition, partial molar volumes, apparent molar volumes, and partial molar volumes at infinite dilution have been calculated. The results have been interpreted in terms of ion–dipole interactions and structural factors of the ionic liquid and alkanols.

  1. T. Welton, Chem. Rev. 99 (1999) 2071–2083

  2. A. Arce, E. Rodil,and A. Soto Journal of Solution Chemistry, 35, 2006(63-78)

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