Liquid density of biofuel mixtures: (Dibutyl ether + 1-butanol) system at pressures up to 140 MPa and temperatures from (293.15 to 393.15) K

Abstract

This work reports new experimental density data (445 points) for binary mixtures of (dibutyl ether+1-butanol) over the composition range (five compositions; 0.15⩽dibutyl ether mole fraction x⩽0.85), from (293.15 to 393.15)K (every 20K), and for 15 pressures from (0.1 to 140)MPa (every 10MPa).An Anton Paar vibrating tube densimeter, calibrated with an uncertainty of ±0.5kg·m−3 was used to perform these measurements. The experimental density data were fitted with a Tait-like equation with low standard deviations. Excess volumes have been calculated from the experimental data and fitted by the Redlich–Kister equation. In addition, the isobaric thermal expansivity and the isothermal compressibility have been derived from the Tait-like equation.