2026-07-11T06:20:04Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/116032026-05-15T08:05:33Zcom_10259_4707com_10259_5086com_10259_2604com_10259_9737col_10259_4708col_10259_10448

2026-05-11T10:43:34Z urn:hdl:10259/11603 Thermophysical Analysis and Molecular Modeling of 2-Propanol–Glycol Ether Mixtures Between 293.15 K and 323.15 K: Implications for Renewable Fuel Formulations Samadi, Khaoula Lifi, Mohamed Muñoz Rujas, Natalia Alaoui, Fatima E. M. Aguilar Romero, Fernando 2-propanol Glycol ethers Local composition models PC-SAFT EoS Peng–Robinson EoS Redlich–Kister correlation Renewable energy Short-chain alcohols and glycol ethers are increasingly being considered as promising additives or components in biofuels due to their favorable physicochemical properties and alignment with the growing demand for sustainable and low-emission energy sources in the transportation sector. This study presents experimental data for five binary mixtures of 2-propanol with glycol ethers: 2-(2-methoxyethoxy)ethanol, 2-(2-ethoxyethoxy)ethanol, 2-methoxyethanol, 2-phenoxyethanol, and 2-butoxyethanol. Measurements of excess molar enthalpy (), density (ρ), speed of sound (u), and refractive index (nD) were performed over the temperature range 293.15 K–323.15 K at 0.1 MPa. Derivative thermodynamic properties, excess molar volume (), isentropic compressibility (ks), and refractive index deviation (ΔnD), were calculated from the experimental data. Density data were correlated using PC-SAFT and Peng–Robinson equations of state, while polynomial equations were employed to fit ρ, u, nD, and ks as functions of composition. The Redlich–Kister equation was used to fit and ΔnD. Excess molar enthalpy () was modeled using both the Redlich–Kister correlation and thermodynamic activity coefficient models, UNIQUAC, NRTL, and Modified UNIFAC, to interpret molecular interactions. All the studied mixtures exhibit endothermic behavior. The results contribute to a deeper understanding of the behavior of alcohol/glycol ether mixtures and their potential application in fuel formulations. 2026-05-11T10:43:34Z 2026-05-11T10:43:34Z 2025-10 info:eu-repo/semantics/article 0195-928X https://hdl.handle.net/10259/11603 10.1007/s10765-025-03616-3 1572-9567 eng International Journal of Thermophysics. 2025, v. 46, n. 10, 147 https://doi.org/10.1007/s10765-025-03616-3 http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess Atribución 4.0 Internacional Springer