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Thermophysical and thermodynamic properties of ionic liquids over an extended pressure range: [bmim][NTf2] and [hmim][NTf2]

2005Journal article Open access
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dc.contributor.authorAzevedo, R. Gomes de
dc.contributor.authorEsperança, J. M. S. S.
dc.contributor.authorSzydlowski, J.
dc.contributor.authorVisak, Z. P.
dc.contributor.authorPires, P. F.
dc.contributor.authorGuedes, H. J. R.
dc.contributor.authorRebelo, L. P. N.
dc.date.accessioned2021-12-15T14:25:55Z
dc.date.available2021-12-15T14:25:55Z
dc.date.issued2005
dc.description.abstractThe current study focuses on 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)amide, [bmim][NTf2], and 1-hexyl-3- methylimidazolium bis(trifluoromethylsulfonyl)amide, [hmim][NTf2]. The objective is to study the influence of pressure as well as that of the cation s alkyl chain length on several properties of this type of ionic liquids. Speed of propagation of ultrasound waves and densities in pure ionic liquids (ILs) as a function of temperature and pressure have been determined. Several other thermody namic properties such as compressibilities, expansivities and heat capacities have been obtained. Speed of sound measurements have been carried out in broad ranges of temperature (283 < T/K < 323) and pressure (0.1 < p/MPa < 150), using a non-intrusive micro cell. Density measurements have been performed at broad ranges of temperature (298 < T/K < 333) and pressure (0.1 < p/MPa < 60) using a vibrating tube densimeter. The pressure dependence of heat capacities, which is generally mild, is highly dependent on the curvature of the temperature dependence of density.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationAzevedo, R. G., Esperança, J. M. S. S., Szydlowski, J., Visak, Z. P., Pires, P. F., Guedes, H. J. R., & Rebelo, L. P. N. (2005). Thermophysical and thermodynamic properties of ionic liquids over an extended pressure range:[bmim][NTf2] and [hmim][NTf2]. The journal of chemical thermodynamics, 37(9), 888-899. https://doi.org/10.1016/j.jct.2005.04.018pt_PT
dc.identifier.doi10.1016/j.jct.2005.04.018pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.13/3913
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationGreen processing with ionic liquids coupled to supercritical CO2 extraction or membrane pervaporation
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/pt_PT
dc.subjectSpeed of soundpt_PT
dc.subjectDensitypt_PT
dc.subjectHeat capacitypt_PT
dc.subjectPressurept_PT
dc.subjectIonic liquidspt_PT
dc.subject[bmim][NTf2]pt_PT
dc.subject[hmim][NTf2]pt_PT
dc.subject.pt_PT
dc.subjectFaculdade de Ciências Exatas e da Engenhariapt_PT
dc.titleThermophysical and thermodynamic properties of ionic liquids over an extended pressure range: [bmim][NTf2] and [hmim][NTf2]pt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleGreen processing with ionic liquids coupled to supercritical CO2 extraction or membrane pervaporation
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/POCI/POCTI%2FEQU%2F35437%2F2000/PT
oaire.citation.endPage899pt_PT
oaire.citation.issue9pt_PT
oaire.citation.startPage888pt_PT
oaire.citation.titleThe Journal of Chemical Thermodynamicspt_PT
oaire.citation.volume37pt_PT
oaire.fundingStreamPOCI
person.familyNameDuarte Louzeiro Pires
person.givenNamePedro Filipe
person.identifierC-3387-2012
person.identifier.ciencia-idD413-1517-1263
person.identifier.orcid0000-0001-8583-7990
person.identifier.scopus-author-id7003655474
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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relation.isAuthorOfPublication.latestForDiscoverycd8a2ad2-3636-4a25-a806-472fa59e9d1e
relation.isProjectOfPublication426bc468-e5e4-4a8c-9db9-ac49cb62c366
relation.isProjectOfPublication.latestForDiscovery426bc468-e5e4-4a8c-9db9-ac49cb62c366

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