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Viscosity measurements of compressed ionic liquid EMIM OTf

2019-05-30Conference object Open access
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dc.contributor.authorSequeira, Maria Carolina
dc.contributor.authorAvelino, Helena Maria da Nóbrega Teixeira
dc.contributor.authorCaetano, Fernando J. P.
dc.contributor.authorFareleira, João M. N. A.
dc.date.accessioned2019-12-03T17:29:10Z
dc.date.available2019-12-03T17:29:10Z
dc.date.issued2019-05-30
dc.description1ª edição do CQE Days, organizada pelo Centro de Química Estrutural, realizada na Academia das Ciências de Lisboa, de 30-31 de maio de 2019 - https://cqe.tecnico.ulisboa.pt/cqedayspt_PT
dc.description.abstractIonic liquids have attracted considerable interest in recent years, as they can be used for multiple aims, namely, as antistatic agents, electrolytes, solvents, lubricants, and CO2 absorbents [1]. The use of ionic liquids in industrial processes require their thermophysical properties, in particular, the viscosity and the thermal conductivity. However, transport properties are scarce due to the difficulty of the measurements, particularly at pressures higher than the atmospheric pressure. Our group has developed a programme of measurements aiming at obtaining rigorous results for the viscosity of ionic liquids using the vibrating wire method. This technique, although very accurate for molecular, non-conducting liquids, could have some difficulties with ionic liquids due to their electrical conductivity [2]. As we were planning to use the vibrating wire method in the forced mode of oscillation, the method requires the acquisition of the frequency response of the wire in a range of frequencies containing the velocity resonance for the transverse oscillations of the wire. Therefore, it is important to verify if the ionic liquid sample is a good electrolytic conductor in the range of frequencies that matter for the measurement of viscosity. The problematic of measuring the viscosity of ionic liquids both in general and in particular, using the vibrating wire technique was studied [3]. Pardal et al. [4] have used 1-ethyl-3-methylimidazolium trifluoromethanesulfonate (EMIMOTf) mixed with water as the electrolyte to successfully reduce CO2 at high pressure. The objective of this work is to contribute with viscosity data in the pressure and temperature range of the work performed by those authors. Therefore, we present new ionic viscosity results for temperatures between 298 K and 347 K and pressures up to 50 MPa.pt_PT
dc.description.versionN/Apt_PT
dc.identifier.citationSequeira, Maria Carolina; et al. - Viscosity measurements of compressed ionic liquid EMIM OTf. In CQE Days, 1, Lisboa, 2019 - "CQE days" [Em linha]. [S.l.]: [s.n.], 2019. 1 posterpt_PT
dc.identifier.urihttp://hdl.handle.net/10400.2/8850
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.relationCentro de Química Estrutural
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/pt_PT
dc.subjectIonic liquidpt_PT
dc.subjectViscositypt_PT
dc.subjectHigh pressurept_PT
dc.subjectEMIM OTfpt_PT
dc.titleViscosity measurements of compressed ionic liquid EMIM OTfpt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.awardTitleCentro de Química Estrutural
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FQUI%2F00100%2F2013/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FQUI%2F00100%2F2019/PT
oaire.citation.conferencePlaceAcademia das Ciências de Lisboapt_PT
oaire.citation.titleCQE Dayspt_PT
oaire.fundingStream5876
oaire.fundingStream6817 - DCRRNI ID
person.familyNameSequeira
person.familyNameAvelino
person.familyNameCaetano
person.familyNameFareleira
person.givenNameMaria Carolina
person.givenNameHelena Maria da Nóbrega Teixeira
person.givenNameFernando J. P.
person.givenNameJoão
person.identifier.ciencia-idFF16-CEAC-461C
person.identifier.ciencia-id9615-6337-5695
person.identifier.ciencia-idDE17-708E-317F
person.identifier.ciencia-id8E1B-F54C-8ABD
person.identifier.orcid0000-0002-9746-2281
person.identifier.orcid0000-0001-6516-2164
person.identifier.orcid0000-0002-6821-1694
person.identifier.orcid0000-0002-8442-9386
person.identifier.ridH-8325-2012
person.identifier.scopus-author-id57209026585
person.identifier.scopus-author-id14919229800
person.identifier.scopus-author-id7004474824
person.identifier.scopus-author-id6603840268
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
rcaap.rightsopenAccesspt_PT
rcaap.typeconferenceObjectpt_PT
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