1 research outputs found
Excess Thermodynamic and Transport Investigations for the Binary Mixtures of 1,2,3,4-Tetrahydronaphthalene with Fatty Acid Ethyl Esters as Potential Biodiesel Fuels
Experimental investigations of thermophysical properties
such as
density (ρ), viscosity (η), speed of sound (u), and refractive index (nD) have been
carried out for the binary systems of 1,2,3,4-tetrahydronaphthalene
(tetralin) with ethyl caprate (EC), ethyl laurate (EL), and ethyl
myristate (EM) at temperatures of 293.15–323.15 K and pressure
of 0.1 MPa. These measured properties have been employed to calculate
various derived parameters such as excess molar volume (VmE), deviation
in isentropic compressibility (Δκs), viscosity
deviation (Δη), excess Gibbs free energy of activation
of viscous flow (ΔG*E), and deviation
in refractive index (ΔnD). Further,
these parameters have been correlated, employing the Redlich Kister
equation. In general, VmE values are negative while Δκs values are positive over the entire composition range of
binary mixtures. Compared to the tetralin + EM system, an easy flow
of tetralin + EC and tetralin + EL binary mixtures has been ascertained
by their negative Δη values. The sign and magnitude of
different derived parameters have been used to interpret the existence
of specific interactions as well as structural effects within the
investigated binary mixtures. Such results could contribute toward
the development and designing of bio-based diesel fuels