Densities and Viscosities of the Ternary System exo-Tetrahydrodicyclopentadiene (1) + n-Decane (2) + 1,2,3,4-Tetrahydronaphthalene (3) and the Corresponding Binary Systems at T = (293.15–333.15) K

Abstract

The densities (ρ) and viscosities (η) of the ternary system exo-tetrahydrodicyclopentadiene + n-decane + 1,2,3,4-tetrahydronaphthalene and the three corresponding binary systems, exo-tetrahydrodicyclopentadiene + n-decane, 1,2,3,4-tetrahydronaphthalene + n-decane, and exo-tetrahydrodicyclopentadiene + 1,2,3,4-tetrahydronaphthalene, were measured at temperatures ranging from 293.15 to 333.15 K and at pressure p = 0.1 MPa. The densities and viscosities were determined using a vibrating-tube densimeter and an automatic microviscometer based on the rolling ball principle, respectively. The values of excess molar volumes (V m E) and the viscosity deviations (Δη) of every mixture were calculated with the measured data. The V m E and Δη values of the three binary systems and the ternary system were fitted to the Redlich–Kister equation and four semi-empirical equations, respectively. The V m E values are negative for the binary systems of exo-tetrahydrodicyclopentadiene + n-decane and 1,2,3,4-tetrahydronaphthalene + n-decane with the minimum at about x = 0.5, while the V m E value of the binary system exo-tetrahydrodicyclopentadiene + 1,2,3,4-tetrahydronaphthalene is positive with the maximum at x = 0.5. The Δη values of the three binary systems are negative over the entire concentration range. For the ternary system, the V m E values are positive when exo-tetrahydrodicyclopentadiene and 1,2,3,4-tetrahydronaphthalene are dominant. Otherwise, the V m E values turn out to be negative. The Δη values are negative over the entire concentration range. These phenomena can be explained by physical interactions and structural effects between components.

Densities and Viscosities for the Ternary Mixture of n-Undecane (1) + Methyl Decanoate (2) + n-Butanol (3) and Corresponding Binaries from T = 293.15 to 333.15 K and at Atmospheric Pressure

“…Reliable fuel thermophysical data are essential for the design of aircraft. , Density is an important index directly associated with the volumetric energy of fuel which will affect the power output of the engine. Viscosity is another crucial parameter related to flow properties as the injection time and transmission properties can be influenced. , At present, the properties of mixed systems between biofuels and traditional aviation fuels remain elusive, despite the fact that their respective thermophysical properties have been reported. − …”