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(ρ, V E , T ) Measurements of the Ternary Mixture (Dibutyl Ether + 1-Heptanol + Heptane) at Temperatures up to 393.15 K and Pressures up to 140 MPa and Modeling Using the Peng–Robinson and PC-SAFT Equations of State

2019; American Chemical Society; Volume: 64; Issue: 9 Linguagem: Inglês

10.1021/acs.jced.9b00273

1520-5134

Ilham Abala, Fatima E.M. Alaoui, Abdelaziz Sahib Eddine, Fernando Aguilar, Natalia Muñoz-Rujas, Eduardo Montero,

Chemical Thermodynamics and Molecular Structure

New measurement density data (1360 points) for dibutyl ether (1) + 1-heptanol (2) + heptane (3) were measured at various temperatures, T (298.15–393.15) K, and various pressures, p (0.1–140) MPa, adopting an Anton-Paar densimeter (DMA HPM). The excess molar volumes, VE, of the studied ternary system were derived from the measured density data. Subsequently, they are calculated with the Singh and Redlich–Kister equations. VE values were employed to obatin the different interactions implied in the mixture. The Peng–Robinson and the perturbed chain-statistical association fluid theory (PC-SAFT) equations of states were performed for their potential to correlate and predict the experimental density for the ternary mixture. The PC-SAFT parameters of pure compounds that constituted the studied ternary mixture were regressed by the measured data of density of each pure compound.