Excess molar volumes, viscosity, refractive index, and Gibbs energy of activation of binary biodiesel plus benzene, and biodiesel plus toluene mixtures at 298.15 and 303.15 K

Vural, Ufuk SancarDurmaz, FatihKocyigit, OzcanKocyigit, HasanMuradoglu, V.Akin, Beril2019-08-012019-08-0120080036-0244https://dx.doi.org/10.1134/S0036024408130189https://hdl.handle.net/11480/5180Excess molar volumes (VE ), viscosities, refractive index, and Gibbs energies were evaluated for binary biodiesel + benzene and toluene mixtures at 298.15 and 303.15 K. The excess molar volumes VE were determined from density, while the excess Gibbs free energy of activation G*Ewas calculated from viscosity deviation Delta eta. The excess molar volume (V E), viscosity deviation (Delta eta), and excess Gibbs energy of activation (G*E) were fitted to the Redlich-Kister polynomial equation to derive binary coefficients and estimate the standard deviations between the experimental data and calculation results. All mixtures showed positive V E values obviously caused by increased physical interactions between biodiesel and the organic solvents.eninfo:eu-repo/semantics/closedAccessExcess molar volumes, viscosity, refractive index, and Gibbs energy of activation of binary biodiesel plus benzene, and biodiesel plus toluene mixtures at 298.15 and 303.15 KArticle82132260226810.1134/S00360244081301892-s2.0-57649215414Q4WOS:000261182600018Q4