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dc.contributor.authorAugusto, Ferrari Felipe
dc.contributor.authorFrancisco, Malaret
dc.contributor.authorStephen, Eustace
dc.contributor.authorJason, Hallett
dc.contributor.authorLuuk, van der Wielen
dc.contributor.authorGeert-Jan, Witkamp
dc.contributor.authorForte, Marcus Bruno Soares
dc.date.accessioned2022-05-18T09:24:03Z
dc.date.available2022-05-18T09:24:03Z
dc.date.issued2022-05-16
dc.identifier.citationAugusto, F. F., Francisco, M., Stephen, E., Jason, H., Luuk, van der W., Geert-Jan, W., & Bruno, F. M. (2022). Physicochemical Characterization of Two Protic Hydroxyethylammonium Carboxylate Ionic Liquids in Water and Their Mixture. Journal of Chemical & Engineering Data. https://doi.org/10.1021/acs.jced.1c00687
dc.identifier.issn0021-9568
dc.identifier.issn1520-5134
dc.identifier.doi10.1021/acs.jced.1c00687
dc.identifier.urihttp://hdl.handle.net/10754/678026
dc.description.abstractA systematic study on the physicochemical properties of two protic ionic liquids (ILs) {2-hydroxyethylammonium acetate ([Mea][Ac]) and 2-hydroxyethylammonium hexanoate ([Mea][Hex])} and their mixtures with water was performed. The density and viscosity were assessed across the entire range of aqueous dilutions between 278 and 393 K. The conductivities, water activities, and surface tension of the binary systems in water were also assessed, and the influence of anions was evaluated. Differential scanning calorimetry (DSC), Fourier transform infrared (FTIR), and 1H and 13C nuclear magnetic resonance (NMR) techniques were used to study the systems at different IL compositions. The excess molar volumes (VE) and thermal expansion coefficients were calculated, with negative values for VE across the entire concentration range. Density data were fitted to a polynomial for density prediction, function of temperature, and concentration, with the average deviation percentage not exceeding 0.63%. The viscosities of the binary systems were studied considering six different models and were better predicted by the model of Herráez et al. at IL concentrations higher than 0.25 mole fraction. The systems containing [Hex]− exhibited higher water activities and lower conductivity and surface tension. All studied systems exhibited a glass transition event, which varied according to the IL composition. The FTIR and NMR analysis confirmed the distinct molecular arrangement of [Mea][Ac] and [Mea][Hex] systems.
dc.description.sponsorshipAuthors acknowledge the BE-Basic Foundation for financial support. F.A.F. acknowledges Max Zomerdijk, Yi Song, and Stef van Hateren of the Biotechnology Department at Applied Sciences (TUDelft) for technical support and Anton Firth of Imperial College for the productive discussions. The authors are grateful to Dr. Richard P. Matthews, Daphne Jackson Research Fellow of the Department of Chemical Engineering at Imperial College London, for the computational calculation of the FTIR spectra. F.A.F. and M.B.S.F. acknowledge FAPESP (2015/50612-8, 2017/24520-4, and 2019/19976-4) and the Biotechnology and Biological Sciences Research Council (BBSRC BB/P017460/1) for financial support. This work was conducted as part of a Dual Degree Ph.D. Project under the agreement between UNICAMP and TUDelft.
dc.publisherAmerican Chemical Society (ACS)
dc.relation.urlhttps://pubs.acs.org/doi/10.1021/acs.jced.1c00687
dc.rightsThis document is the Accepted Manuscript version of a Published Work that appeared in final form in Journal of Chemical & Engineering Data, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/doi/10.1021/acs.jced.1c00687.
dc.titlePhysicochemical Characterization of Two Protic Hydroxyethylammonium Carboxylate Ionic Liquids in Water and Their Mixture
dc.typeArticle
dc.contributor.departmentBiological and Environmental Science and Engineering (BESE) Division
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)
dc.identifier.journalJournal of Chemical & Engineering Data
dc.rights.embargodate2023-05-16
dc.eprint.versionPost-print
dc.contributor.institutionBioprocess Engineering, Biotechnology Department, Faculty of Applied Sciences, Delft University of Technology (TUDelft), Postbus 5, 2600 AA Delft, The Netherlands
dc.contributor.institutionBioprocess and Metabolic Engineering Laboratory, Department of Food Engineering, Faculty of Food Engineering, University of Campinas (UNICAMP), Monteiro Lobato Street, 80-Zeferino Vaz, Campinas, São Paulo 13083-862, Brazil
dc.contributor.institutionFaculty of Engineering, Department of Chemical Engineering, Imperial College London, South Kensington Campus, SW7 2AZ London, U.K.
dc.contributor.institutionBiocatalysis, Biotechnology Department, Faculty of Applied Sciences, Delft University of Technology (TUDelft), Postbus 5, 2600 AA Delft, The Netherlands
kaust.personGeert-Jan, Witkamp


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