Thermophysical properties of ethyl levulinate and n-alkanol systems

Abidi, Raouia ; García-Gracia, Mario ; Hernández, Ariel ; Hichri, Monia ; Lafuente, Carlos (Universidad de Zaragoza)

Resumen: Some thermophysical properties such as densities, speeds of sound, refractive indices, and heat flows of the binary systems ethyl levulinate and n-alkanols (methanol, ethanol, 1-propanol, and 1-butanol) are reported in the temperature range T = (283.15–313.15) K and at p = 100 kPa. From these experimental data, the excess properties were calculated and correlated with the composition using a modified Redlich–Kister equation. The excess molar volumes were negative for short-chain alcohols and positive for 1-propanol and 1-butanol. The excess refractive indices exhibited the opposite behaviour. The excess isentropic compressibilities were negative and the excess molar enthalpies, were positive. The perturbed chain statistical associating fluid theory equation of state (PC-SAFT EoS) was successfully applied to correlate the densities of the mixtures, and good qualitative results in the computation of the excess molar enthalpy were obtained. Furthermore, Schaaff’s collision factor theory (SCFT) and the Laplace mixing rule were coupled with PC-SAFT to predict the speed of sound and the refractive index, respectively.

Idioma: Inglés

DOI: 10.1007/s10973-024-12953-8

Año: 2024

Publicado en: Journal of Thermal Analysis and Calorimetry 149, 8 (2024), 3617-3629
ISSN: 1388-6150

Financiación: info:eu-repo/grantAgreement/ES/DGA/E31-23R

Tipo y forma: Artículo (Versión definitiva)

Área (Departamento): Área Química Física (Dpto. Química Física)