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Impact of the cation symmetry on the mutual solubilities between water and imidazolium-based ionic liquids

2014Journal article Restricted access
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dc.contributor.authorMartins, Mónia A.R.
dc.contributor.authorNeves, Catarina M.S.S.
dc.contributor.authorKurnia, Kiki A.
dc.contributor.authorLuís, Andreia
dc.contributor.authorSantos, Luís M.N.B.F.
dc.contributor.authorFreire, Mara G.
dc.contributor.authorPinho, Simão
dc.contributor.authorCoutinho, João A.P.
dc.date.accessioned2016-10-11T15:53:37Z
dc.date.available2016-10-11T15:53:37Z
dc.date.issued2014
dc.description.abstractAiming at the evaluation of the impact of the ionic liquids (ILs) cation symmetry on their phase behaviour, in this work, novel mutual solubilities with water of the symmetric series of [C(n)C(n)im][NTf2] (with n=1-5) were determined and compared with their isomeric forms of the asymmetric [C(n)C(1)im][NTf2] group. While the solubility of isomeric ILs in water was found to be similar, the solubility of water in ILs follows the same trend up to a maximum cation alkyl side chain length. For n >= 4 in [C(n)C(n)im][NTf2] the solubility of water in the asymmetric ILs is slightly higher than that observed in the symmetric counterparts. The thermodynamic properties of solution and solvation derived from the experimental solubility data of ILs in water at infinite dilution, namely the Gibbs energy, enthalpy and entropy were used to evaluate the cation symmetry effect on the ILs solvation. It is shown that the solubility of ILs in water is entropically driven and highly influenced by the cation size. Accordingly, it was found that the ILs solubility in water of both symmetric and asymmetric series depends on their molecular volume. Based on these findings, a linear correlation between the logarithm of the solubility of ILs in water and their molar volume is here proposed for the [NTf2]-based ILs at a fixed temperature.pt_PT
dc.description.sponsorshipThis work was financed by national funding from Fundac¸ ão paraa Ciência e a Tecnologia (FCT, Portugal), European Union, QREN,FEDER and COMPETE by the projects PEST-C/CTM/LA0011/2013and PEST-C/EQB/LA0020/2013. The authors also thank FCT forthe PhD and postdoctoral grants SFRH/BD/87084/2012, SFRH/BD/70641/2010, SFRH/BPD/88101/2012 of M.A.R.M., C.M.S.S.N., andK.A.K., respectively.pt_PT
dc.identifier.citationMartins, Mónia A.R.; Neves, Catarina M.S.S.; Kurnia, Kiki A.; Luís, Andreia; Santos, Luís M.N.B.F.; Freire, Mara G.; Pinho, Simão; Coutinho, João A.P. (2014). Impact of the cation symmetry on the mutual solubilities between water and imidazolium-based ionic liquids. Fluid Phase Equilibria. ISSN 0378-3812. 375, p.161-167pt_PT
dc.identifier.doi10.1016/j.fluid.2014.05.013pt_PT
dc.identifier.issn0378-3812
dc.identifier.urihttp://hdl.handle.net/10198/13394
dc.language.isoengpt_PT
dc.relationPARÂMETROS QUÍMICO-FÍSICOS DE TERPENOS E TERPENOIDES PARA APLICAÇÃO EM ESTUDOS DE IMPACTO AMBIENTAL
dc.relationEVALUATION OF ENVIRONMENTAL IMPACT AND TREATMENT OF AQUEOUS EFFLUENTS CONTAMINATED WITH IONIC LIQUIDS
dc.relationDEVELOPMENT OF IONIC LIQUIDS FORMULATIONS FOR THE PURIFICATION OF SHALE GAS
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectMutual solubilitiespt_PT
dc.subjectIonic liquidspt_PT
dc.subjectWaterpt_PT
dc.subjectCation symmetrypt_PT
dc.subjectCOSMO-RSpt_PT
dc.titleImpact of the cation symmetry on the mutual solubilities between water and imidazolium-based ionic liquidspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitlePARÂMETROS QUÍMICO-FÍSICOS DE TERPENOS E TERPENOIDES PARA APLICAÇÃO EM ESTUDOS DE IMPACTO AMBIENTAL
oaire.awardTitleEVALUATION OF ENVIRONMENTAL IMPACT AND TREATMENT OF AQUEOUS EFFLUENTS CONTAMINATED WITH IONIC LIQUIDS
oaire.awardTitleDEVELOPMENT OF IONIC LIQUIDS FORMULATIONS FOR THE PURIFICATION OF SHALE GAS
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/COMPETE/PEst-C%2FCTM%2FLA0011%2F2013/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/COMPETE/PEst-C%2FEQB%2FLA0020%2F2013/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F87084%2F2012/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F70641%2F2010/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBPD%2F88101%2F2012/PT
oaire.citation.endPage167pt_PT
oaire.citation.startPage161pt_PT
oaire.citation.titleFluid Phase Equilibriapt_PT
oaire.citation.volume375pt_PT
oaire.fundingStreamCOMPETE
oaire.fundingStreamCOMPETE
person.familyNamePinho
person.givenNameSimão
person.identifier810882
person.identifier.ciencia-id481D-73AD-8D0F
person.identifier.orcid0000-0002-9211-857X
person.identifier.ridD-4148-2013
person.identifier.scopus-author-id7003570175
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.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
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
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