2026-07-24T12:51:54Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/119292026-07-21T09:44:36Zcom_10259_4707com_10259_5086com_10259_2604com_10259_9737col_10259_4708col_10259_10448

Samadi, Khaoula e065f18c-ff53-4b3b-96b5-11a3789ca375 600 Lifi, Mohamed 996 600 0000-0002-5426-6977 Lifi, Houda aa09ae4f-b0a0-4129-81a0-72a26814de8c 600 Ouakarrouch, Mohamed b82fbf38-db52-4afd-a9a7-540de0b1946d Aguilar Romero, Fernando 902 600 0000-0002-2982-9053 Alaoui, Fatima E. M. 11 600 0000-0001-7443-6796 2026-07-20T11:20:57Z 2026-07-20T11:20:57Z 2026-05 0040-6031 https://hdl.handle.net/10259/11929 10.1016/j.tca.2026.180259 Reducing emissions is a key goal in developing sustainable fuels. Higher alcohols like 1-heptanol play an important key due to their excellent fuel properties, such as high energy content and good combustion behavior, making them promising candidates as renewable fuel additives. This study focuses on the investigation of heat- related behavior of five binary systems composed of glycol ethers with 1-heptanol: diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, ethylene glycol monomethyl ether, ethylene glycol monophenyl ether, and ethylene glycol monobutyl ether. Experimental data were carried out for key thermal and physical properties, including excess molar enthalpy (HE m), density (ρ), speed of sound (u), and refractive index (nD), across the temperature range 293.15–323.15 K at 0.1 MPa. From these primary data, secondary thermophysical properties, namely excess molar volume (VE), isentropic compressibility (ks), and refractive index deviation (ΔnD), were derived to better characterize non-ideal mixing behavior. Peng–Robinson and PC-SAFT EOS were using to modeled the density data, while empirical polynomial expressions were applied to fit composition-dependent trends in ρ, u, nD, and ks as dependent on fraction. VE and ΔnD were fitted using the Redlich-Kister equation. The HE m was analyzed using both empirical method and heat-related models, including UNIQUAC, NRTL, and the predictive DM-UNIFAC model. All systems exhibited positive HE m values, indicating endothermic mixing processes. These findings offer valuable insight into the interaction mechanisms between 1-heptanol and glycol ethers, supporting their evaluation for use in environmentally friendly fuel formulations. application/pdf eng Elsevier Thermochimica Acta. 2006, v. 759, art. 180259 https://doi.org/10.1016/j.tca.2026.180259 Atribución 4.0 Internacional http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess Renewable energy Glycol ethers Redlich-Kister Correlation Local Composition Models Predictiv model Peng−Robinson and PC-SAFT EoS 1-heptanol Termodinámica-Modelos matemáticos Alcoholes-Propiedades térmicas Thermodynamics-Mathematical models Alcohols-Thermal properties Experimental and Modeling Study of Thermophysical and Excess Properties of 1-Heptanol + Glycol Ether Systems info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Thermochimica Acta 759 1 18 THUMBNAIL Samadi-ta_2026.pdf.jpg Samadi-ta_2026.pdf.jpg IM Thumbnail image/jpeg 4758 https://riubu.ubu.es/bitstream/10259/11929/4/Samadi-ta_2026.pdf.jpg eb08c5675e8abf09dd9885a6d1c42530 MD5 4 LICENSE license.txt license.txt text/plain; charset=utf-8 1362 https://riubu.ubu.es/bitstream/10259/11929/3/license.txt 5d013bfa6e473ff0db22cd82a4d71a70 MD5 3 CC-LICENSE license_rdf license_rdf application/rdf+xml; charset=utf-8 908 https://riubu.ubu.es/bitstream/10259/11929/2/license_rdf 0175ea4a2d4caec4bbcc37e300941108 MD5 2 ORIGINAL Samadi-ta_2026.pdf Samadi-ta_2026.pdf application/pdf 4935934 https://riubu.ubu.es/bitstream/10259/11929/1/Samadi-ta_2026.pdf 7b82f3f6f29deb07a09ea0e09b8ac64e MD5 1 10259/11929 oai:riubu.ubu.es:10259/11929 2026-07-21 11:44:36.204 Repositorio Institucional de la Universidad de Burgos bubrep@ubu.es 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