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Revisiting odd-even effects in n-alkane systems

2024-05-31Conference object Open access
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datacite.subject.fosEngenharia e Tecnologia::Engenharia Química
datacite.subject.sdg07:Energias Renováveis e Acessíveis
datacite.subject.sdg09:Indústria, Inovação e Infraestruturas
dc.contributor.authorFausto, Rui
dc.contributor.authorSequeira, Maria Carolina
dc.contributor.authorCaetano, Fernando J. P.
dc.contributor.authorDiogo, Herminio
dc.contributor.authorFareleira, João M. N. A.
dc.contributor.authorNikitin, Timur
dc.contributor.authorFausto, Rui
dc.date.accessioned2025-01-28T12:42:00Z
dc.date.available2025-01-28T12:42:00Z
dc.date.issued2024-05-31
dc.description.abstractn-Alkanes have been widely studied for different applications. Recently, they became still more popular due to their exceptional characteristics as phase change materials (PCMs) for thermal energy storage (TES) applications [1]. In our research group, during the last three years, we have been studying the phase equilibrium behaviour of some binary systems with potential application as PCMs, including n-alkanes [2,3]. In this study, the n-alkanes family has shown some intriguing effects, related to the odd or even number of carbon atoms of the molecules on the characteristics of their solid-liquid phase equilibria. Several studies regarding the solid phase properties have been carried out to understand this type of phenomena in n-alkanes and compounds whose molecules contain alkyl groups. It has been established that n-alkanes exhibit different crystal packing arrangements according to their odd or even number of carbon atoms in their chains [4]. As a result, several properties are seen to be affected by the number of carbon atoms, revealing remarkable odd-even effects, which can eventually be used as an advantage for some specific applications [5]. This is particularly important to interpret and predict the solid-liquid phase equilibrium types of the diagrams, which is a key issue to select PCMs for TES applications. Most of the studies involving the properties of n-alkanes are devoted to the liquid phase. Therefore, along the years, a wide range of properties have been measured, predicted, correlated, and interpreted, including viscosity, density, heat capacity, vapour pressure, flash point, boiling point, and thermal conductivity. It is generally known that linear alkanes are an interesting homologous series, because they show a considerable regularity in their fluid phase properties, which allows to establish, for example, simple correlations based on the number of carbon atoms in the molecular chain [4]. Because of the raising importance of energy storage, namely TES, and the application of alkanes as PCMs, interest in their solid-liquid phase equilibria has increased. Consequently, it is interesting to picture an overall image on the thermophysical properties of n-alkanes, and, in particular to study the predictability of the main characteristics of their solid-liquid phase equilibria. Thus, this work aims to be a comprehensive view on the thermophysical properties and phase equilibrium behaviour of n-alkanes and their relation to the odd or even carbon atoms present in the alkyl chain.eng
dc.description.sponsorshipIMS-LA/P/0056/2020UIDB/00100/2020 (https://doi.org/10. 54499/LA/P/0056/2020)
dc.identifier.urihttp://hdl.handle.net/10400.2/19421
dc.language.isoeng
dc.peerreviewedyes
dc.relationCentro de Química Estrutural
dc.relationCoimbra Chemistry Center
dc.relationEquilibrium and Transport Properties of Materials for Sustainable Low Temperature Energy Storage
dc.rights.urihttp://creativecommons.org/licenses/by-sa/4.0/
dc.subjectn-Alkanes
dc.subjectOdd-even effects
dc.subjectPhase change materials
dc.subjectPCM
dc.subjectThermal energy storage
dc.titleRevisiting odd-even effects in n-alkane systemseng
dc.typeconference object
dspace.entity.typePublication
oaire.awardTitleCentro de Química Estrutural
oaire.awardTitleCoimbra Chemistry Center
oaire.awardTitleEquilibrium and Transport Properties of Materials for Sustainable Low Temperature Energy Storage
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00100%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00313%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/OE/UI%2FBD%2F152239%2F2021/PT
oaire.citation.titleCQE Days 2024
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStreamOE
oaire.versionhttp://purl.org/coar/version/c_be7fb7dd8ff6fe43
person.familyNameSequeira
person.familyNameCaetano
person.familyNameDiogo
person.familyNameFareleira
person.familyNameNikitin
person.familyNameFausto
person.givenNameMaria Carolina
person.givenNameFernando J. P.
person.givenNameHerminio
person.givenNameJoão
person.givenNameTimur
person.givenNameRui
person.identifier.ciencia-idFF16-CEAC-461C
person.identifier.ciencia-idDE17-708E-317F
person.identifier.ciencia-id6613-74F0-0CC2
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person.identifier.orcid0000-0002-9746-2281
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person.identifier.orcid0000-0002-0808-1306
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person.identifier.orcid0000-0002-0907-5936
person.identifier.orcid0000-0002-8264-6854
person.identifier.ridH-8246-2012
person.identifier.ridH-8325-2012
person.identifier.scopus-author-id57209026585
person.identifier.scopus-author-id7004474824
person.identifier.scopus-author-id6603795027
person.identifier.scopus-author-id6603840268
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
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