%T Density and excess molar volume of binary mixture of thiocyanate-based ionic liquids and methanol at temperatures 293.15-323.15 K
%A G. Gonfa
%A M.A. Bustam
%A N. Muhammad
%A S. Ullah
%I Elsevier
%V 211
%P 734-741
%K Atmospheric pressure; Binary mixtures; Density (specific gravity); Density functional theory; Ionic liquids; Liquids; Methanol; Mixtures; Polynomials; Volume measurement, Composition ranges; Excess molar volumes; Intermolecular interactions; Partial Molar volume; Partial molar volumes at infinite dilution; Redlich-Kister coefficients; Redlich-kister polynomial equation; Temperature range, Density of liquids
%X Abstract Densities of binary mixture of three ionic liquids, 1-butyl-3-methylimidazolium thiocyanate (C4C1imSCN), 1-allyl-3-methylimidazolium thiocyanate (C1 = C2)C1imSCN) and 3-(3-butyl-1H-imidazol-3-ium-1-yl)propanenitrile thiocyanate ((NC)2C2C4imSCN), with methanol were measured over a temperature range of 293.15 to 323.15 K and at atmospheric pressure. Excess molar volumes (VmE) were calculated from density values and correlated with Redlich-Kister polynomial equation. Partial molar volumes at infinite dilutions (Vm,i�) of the ILs and methanol were determined from the Redlich-Kister coefficients. For all the studied systems, the VmE is negative over the entire composition range. The VmE and Vm,i� are interpreted in terms of intermolecular interactions in the binary mixture. Density functional theory has been used to investigate the interactions between methanol and the studied ILs. © 2015 Elsevier B.V.
%O cited By 26
%L scholars5653
%J Journal of Molecular Liquids
%D 2015
%R 10.1016/j.molliq.2015.07.073