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dc.creatorSafarov, Javid
dc.creatorBussemer, Christoffer
dc.creatorAliyev, Abilgani
dc.creatorIvaniš, Gorica
dc.creatorKijevčanin, Mirjana
dc.creatorRadović, Ivona
dc.creatorHassel, Egon
dc.creatorAbdulagatov, Ilmutdin
dc.date.accessioned2021-03-10T14:22:17Z
dc.date.available2021-03-10T14:22:17Z
dc.date.issued2020
dc.identifier.issn0352-5139
dc.identifier.urihttp://TechnoRep.tmf.bg.ac.rs/handle/123456789/4491
dc.description.abstractDensities of ionic liquid (IL) 1-octyl-3-methylimidazolium hexafluorophosphate [OMIM][PF6] at high temperatures and high pressures were measured. The measurements were made along 10 isotherms over a temperature range T = 278.15 to 413.15 K, at pressures up to 140 MPa by means of an Anton Paar DMA HPM vibration tube densimeter (VTD). The combined expanded relative uncertainties of the density, pressure and temperature measurements at the 95 % confidence level with a coverage factor of k = 2 are estimated to be 0.03 to 0.08 % (depending on temperature and pressure ranges), 0.1 %, and 0.015 K, respectively. We have critically assessed all of the reported high-pressure densities for [OMIM][PF6], together with the presented results, in order to carefully select primary data for development of a reference wide-ranging equation of state. Values of rho-T isobars curvatures, (partial derivative(2)rho/partial derivative T-2)(n), were estimated using the present high-pressure.-T measurements and they were pretty low (0.78x10(-7) to 1.50.x10(-7) m(3) kg(-1) K-1), indicating that the heat capacity of [OMIM][PF6] very weakly depends on pressure, since (partial derivative C-P/partial derivative P)(T) approximate to approximate to (partial derivative(2)rho/partial derivative T-2)(n). Density data were fitted to the modified Tammann-Tait equation and the multiparametric polynomial-type equation of state (EOS) for the IL was developed using the measured high-pressure and high-temperature (p, rho, T) data. This EOS, together with our previous measured heat capacity data at atmospheric pressure, was used to calculate high-pressure and high-temperature derived thermodynamic properties, such as isothermal compressibility,en
dc.publisherSrpsko hemijsko društvo, Beograd
dc.relationUniversity of Rostock and Baku Engineering University
dc.rightsopenAccess
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.sourceJournal of the Serbian Chemical Society
dc.subjectdensityen
dc.subjecthigh-pressureen
dc.subjecthigh-temperatureen
dc.subjectionic liquiden
dc.subjectequation of stateen
dc.titleHigh-temperature and high-pressure (p, rho, T) measurements and derived thermodynamic properties of 1-octyl-3-methylimidazolium hexafluorophosphateen
dc.typearticle
dc.rights.licenseBY-NC-ND
dc.citation.epage250
dc.citation.issue2
dc.citation.other85(2): 237-250
dc.citation.rankM23
dc.citation.spage237
dc.citation.volume85
dc.identifier.doi10.2298/JSC190528076S
dc.identifier.fulltexthttp://TechnoRep.tmf.bg.ac.rs/bitstream/id/10211/0352-51391900076S.pdf
dc.identifier.scopus2-s2.0-85094188071
dc.identifier.wos000518864200008
dc.type.versionpublishedVersion


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