P-ρ-T data and modelling for (2-methylpropan-1-ol + n-octane or n-decane) between 313.15 K–353.15 K and 0.1–20 MPa

Abstract

Isothermal measurements for 2-methylpropan-1-ol (1) + n-octane (2) and 2-methylpropan-1-ol (1) + n-decane (2) were conducted utilizing an Anton Paar DMA HP densimeter. Measurements include the entire mixture composition range and were conducted in the pressure range (0.1–20) MPa for 5 different temperatures between 313.15 and 353.15 K. The data were successfully correlated for each composition with the modified Toscani-Szwarc equation using 5 unique parameters. The data were also fit to the Peng-Robinson equation of state using a single binary interaction parameter, however quantitative results were poor. Mixture density predictions were also made by the PC-SAFT model, which also yielded mostly qualitative results. Three derived thermodynamic properties, namely excess molar volume, thermal expansivity and isothermal compressibility, were also computed using the regressed parameters.