Gamma infinity data for the separation of water-butan-1-ol mixtures using ionic liquids

Michał Wlazło , Urszula Domańska-Żelazna


Bio-butanol is produced from biomass by fermentation and must be separated from the aqueous phase. Ionic liquids (ILs) are a novel attractive solvents, which can be used for removing butan-1-ol from the aqueous fermentation broth. The thermal properties, obtained with DSC and the densities of IL octyltriethylammonium bis{(trifluomethyl)sulfonyl}imide, [N8,2,2,2][NTf2] as a function of temperature have been measured over a temperature range (289.15–385.15) K. The activity coefficients at infinite dilution, View the MathML source, for 63 solutes, including alkanes, cycloalkanes, alkenes, alkynes, aromatic hydrocarbons, alcohols, water, thiophene, tetrahydrofuran, ethers, and ketones in the [N8,2,2,2][NTf2] were determined by gas–liquid chromatography at six temperatures from 318.15 K to 368.15 K. The gas–liquid partition coefficients, KL were calculated for all solutes. The partial molar excess Gibbs energies View the MathML source, enthalpies View the MathML source, and entropies View the MathML source at infinite dilution were calculated from the experimental View the MathML source values obtained over the temperature range. The selectivity and capacity for water/butan-1-ol separation problem were calculated from View the MathML source data and were compared to literature values for bis{(trifluomethyl)sulfonyl}imide-based ILs with different cations, and with all available data for ILs.
Author Michał Wlazło ZChF
Michał Wlazło,,
- Department Of Physical Chemistry
, Urszula Domańska-Żelazna ZChF
Urszula Domańska-Żelazna,,
- Department Of Physical Chemistry
Journal seriesSeparation and Purification Technology, ISSN 1383-5866
Issue year2016
Publication size in sheets0.5
Keywords in EnglishIonic liquid; [N8,2,2,2][NTf2]; Activity coefficients at infinite dilution; Thermodynamics; Extraction
Languageen angielski
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Score (nominal)40
ScoreMinisterial score = 40.0, 28-11-2017, ArticleFromJournal
Ministerial score (2013-2016) = 40.0, 28-11-2017, ArticleFromJournal
Publication indicators WoS Impact Factor: 2016 = 3.359 (2) - 2016=3.843 (5)
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