Phase equilibrium investigation with ionic liquids and selectivity in separation of 2-phenylethanol from water

Urszula Domańska-Żelazna , Marek Królikowski , Maciej Zawadzki , Agnieszka Wróblewska


This work presents some important issues and topics related to possible extraction of 2-phenylethanol (PEA) from aqueous phase “in situ” during the biosynthesis with ionic liquids (ILs). It consists of a series of experimental phase equilibrium measurements in binary and ternary systems. Three ILs as extraction media are proposed for the extraction process based on phase equilibria in ternary systems {IL (1) + PEA (2) + water (3)} at temperature T = 308.15 K and ambient pressure. The systems are composed of the following ILs: 1-hexyl-1-methylmorpholinium bis{(trifluoromethyl)sulfonyl}imide, [HMMOR][NTf2], 1-allyl-3-methylimidazolium bis{(trifluoromethyl)sulfonyl}imide, [AMIM][NTf2], and diethylmethylsulfonium bis{(trifluoromethyl)sulfonyl}imide, [S221][NTf2]. A differential scanning calorimetry (DSC) was used to determine the thermal properties of the ILs. The synthesis of new [HMMOR][NTf2] IL and its thermal and physicochemical properties as density, viscosity, surface tension were presented. The volume expansivity, as well as the surface thermodynamic functions, such as surface entropy and enthalpy have been derived from the temperature dependence of the surface tension values, as well as the critical temperature, parachor and speed of sound for all ILs were presented. The correlation of the liquidus curves in binary systems and tie-lines in ternary systems was undertaken with the NRTL equation. These results of solubility can be used to design future alternative technological processes of the extraction of PEA from fermentation broth.
Author Urszula Domańska-Żelazna (FC / DPC)
Urszula Domańska-Żelazna,,
- Department Of Physical Chemistry
, Marek Królikowski (FC / DPC)
Marek Królikowski,,
- Department Of Physical Chemistry
, Maciej Zawadzki (FC / DPC)
Maciej Zawadzki,,
- Department Of Physical Chemistry
, Agnieszka Wróblewska (FC / DPC)
Agnieszka Wróblewska,,
- Department Of Physical Chemistry
Journal seriesJournal of Chemical Thermodynamics, ISSN 0021-9614
Issue year2016
Publication size in sheets0.5
Keywords in EnglishSynthesis of [HMMOR][NTf2]; Physicochemical properties; Binary LLE phase diagrams; Ternary LLE phase diagrams; Thermodynamic description
ASJC Classification1606 Physical and Theoretical Chemistry; 2500 General Materials Science; 3107 Atomic and Molecular Physics, and Optics
Project[2014/15/B/ST5/00136 POLON ] Two-phases water-organic process of production of 2-phenylethanol, including the technique of high pressure. Project leader: Domańska-Żelazna Urszula, , start date 22-07-2015, Implemented
WCh Projects financed by NSC [Projekty finansowane przez NCN]
Languageen angielski
1-s2.0-S0021961416301690-main.pdf 927.08 KB
Score (nominal)35
Score sourcejournalList
ScoreMinisterial score = 30.0, 17-08-2020, ArticleFromJournal
Ministerial score (2013-2016) = 35.0, 17-08-2020, ArticleFromJournal
Publication indicators Scopus Citations = 16; Scopus SNIP (Source Normalised Impact per Paper): 2016 = 1.182; WoS Impact Factor: 2016 = 2.726 (2) - 2016=2.784 (5)
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