2026-04-29T09:32:29Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/112542026-02-17T10:55:33Zcom_10259_9737com_10259_5086com_10259_2604col_10259_10448

Samadi, Khaoula e065f18c-ff53-4b3b-96b5-11a3789ca375 600 Lifi, Mohamed 1f0a7148-9b14-44e2-a1ee-c6631a49ff82 600 Yatim, Fatima Ezzahra 5e244197-46ff-494d-964d-6a8b3f715819 600 Lifi, Houda aa09ae4f-b0a0-4129-81a0-72a26814de8c 600 Aguilar Romero, Fernando 902 600 0000-0002-2982-9053 Alaoui, Fatima E. M. 11 600 0000-0001-7443-6796 2026-01-21T09:52:53Z 2026-01-21T09:52:53Z 2025-09 1388-6150 https://hdl.handle.net/10259/11254 10.1007/s10973-025-14678-8 1588-2926 The growing demand for transportation has made the sector one of the largest sources of air pollution globally, directly impacting environmental quality and human health. To address these challenges, various mitigation strategies are being investigated, particularly those targeting emissions from vehicles using internal combustion engines. Among these, the incorporation of oxygen-rich additives, such as long-chain alcohols and alkoxyethanols, has shown promise in enhancing fuel compatibility and improving combustion behaviour, which can lead to reduced pollutant emissions. Understanding their thermodynamic behaviour, particularly excess molar enthalpy, , is crucial for optimizing fuel formulations, as hydrogen bonding and steric effects influence mixing behaviour, stability, and performance. The presence of hydroxyl (–OH) functional group in each component (alcohol or alkoxyethanol) introduces varying degrees of complexity, depending on molecular structure, steric hindrance, and the ability to form intermolecular networks. In the present work, an isothermal flow calorimeter was employed to measure the of mixtures involving alcohols and alkoxyethanols at two different temperatures: 298.15 K and 313.15 K, yielding a total of 304 experimental data points. The measured results were correlated using the Redlich–Kister equation (R–K) and modelled with various local composition models, including UNIQUAC, NRTL, and UNIFAC models. The results show that the first two models provided accurate predictions of , effectively capturing the impact of hydrogen bonding and steric hindrance on mixing behavior. Although the UNIFAC model successfully predicted the overall thermodynamic trends of the mixtures, it exhibited systematic deviations, either underestimating or overestimating , due to its limitations in describing specific molecular interactions. The analysis shows that all analysed binary mixtures exhibit endothermic behaviour at different temperatures. Open access funding provided by FEDER European Funds and the Junta de Castilla y León under the Research and Innovation Strategy for Smart Specialization (RIS3) of Castilla y León 2021-2027. Open access funding was provided by UNIVERSIDAD DE BURGOS. application/pdf eng Springer Journal of Thermal Analysis and Calorimetry. 2025, V. 150, n. 20, p. 16601-16618 https://doi.org/10.1007/s10973-025-14678-8 Atribución 4.0 Internacional http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess Oxygenated additives Alkoxyethanols Alcohols Excess molar enthalpy Redlich–Kister correlation Local composition models Ingeniería Química Termodinámica Política ambiental Chemical engineering Thermodynamics Environmental policy Thermodynamic study of binary mixtures of alcohols and alkoxyethanols for fuel applications: excess molar enthalpies and local composition models info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Journal of Thermal Analysis and Calorimetry 150 20 16601 16618 THUMBNAIL Samadi-jotaac_2025.pdf.jpg Samadi-jotaac_2025.pdf.jpg IM Thumbnail image/jpeg 4641 https://riubu.ubu.es/bitstream/10259/11254/4/Samadi-jotaac_2025.pdf.jpg d2b5e18928bcbbe90da26c1a835e1af4 MD5 4 LICENSE license.txt license.txt text/plain; charset=utf-8 1362 https://riubu.ubu.es/bitstream/10259/11254/3/license.txt 5d013bfa6e473ff0db22cd82a4d71a70 MD5 3 CC-LICENSE license_rdf license_rdf application/rdf+xml; charset=utf-8 908 https://riubu.ubu.es/bitstream/10259/11254/2/license_rdf 0175ea4a2d4caec4bbcc37e300941108 MD5 2 ORIGINAL Samadi-jotaac_2025.pdf Samadi-jotaac_2025.pdf application/pdf 1505259 https://riubu.ubu.es/bitstream/10259/11254/1/Samadi-jotaac_2025.pdf 65ba45fe24875786f930f69238d01b8c MD5 1 10259/11254 oai:riubu.ubu.es:10259/11254 2026-02-17 11:55:33.948 Repositorio Institucional de la Universidad de Burgos bubrep@ubu.es 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