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Insights into the chloride versus bromide effecton the formation of urea quaternary ammonium eutectic solvents

2022Journal article Open access
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dc.contributor.authorMartins, Mónia A.R.
dc.contributor.authorAbranches, Dinis O.
dc.contributor.authorSilva, Liliana P.
dc.contributor.authorPinho, Simão
dc.contributor.authorCoutinho, João A.P.
dc.date.accessioned2023-03-02T16:46:15Z
dc.date.available2023-03-02T16:46:15Z
dc.date.issued2022
dc.description.abstractThe intermolecular interactions of urea and quaternary ammonium salts relevant to their thermodynamic nonideality were here investigated by measuring the solid-liquid equilibria of their binary mixtures. The experimental data revealed that the anion transfer between the quaternary ammonium salt and urea increases with increasing alkyl chain lengths, leading to negative deviations from ideality in the urea-rich side for [N4,4,4,4]- based systems. However, the use of bromides instead of chlorides dampens the nonideality of urea because of larger size and lower electronegativity of the anion. The behavior of urea when mixed with ChCl or ChBr was found to be remarkably different, indicating that its nonideality in the ChCl/urea eutectic solvent is governed by urea-chloride rather than hydroxyethyl-urea interactions. The conclusions presented highlight the contribution of charge delocalization in the formation of deep eutectic solvents of type III.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationMartins, Mónia A.R.; Abranches, Dinis O.; Silva, Liliana P.; Pinho, Simão; Coutinho, João A. P.. (2022). Insights into the chloride versus bromide effecton the formation of urea quaternary ammonium eutectic solvents. Industrial & Engineering Chemistry Research. ISSN 0888-5885. 61:32, p. 1-8pt_PT
dc.identifier.issn0888-5885
dc.identifier.urihttp://hdl.handle.net/10198/27423
dc.language.isoengpt_PT
dc.publisherAmerican Chemical Society
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectCholine chloride/ureapt_PT
dc.subjectDensitypt_PT
dc.subjectViscositypt_PT
dc.subjectFusion
dc.titleInsights into the chloride versus bromide effecton the formation of urea quaternary ammonium eutectic solventspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.titleIndustrial & Engineering Chemistry Researchpt_PT
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
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication8ef7789a-34f3-4915-a666-4efe26272a30
relation.isAuthorOfPublication.latestForDiscovery8ef7789a-34f3-4915-a666-4efe26272a30

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