Ammonium ionic liquids in separation of water/butan-1-ol using liquid-liquid equilibrium diagrams in ternary systems
Urszula Domańska-Żelazna , Michał Wlazło , Zbigniew Dąbrowski , Anna Wiśniewska
Abstract
In this work ionic liquids (ILs) as a novel popular solvents are proposed for removing butan-1-ol from the aqueous phase. Ternary liquid-liquid phase equilibrium data are presented for mixtures of {ionic liquid, IL (1) + butan-1-ol (2) + water (3)} at T = 328.15 K and pressure 101.3 kPa. The new synthesized by us ammonium-based ILs with long alkane chains, such as dimethyldodecylphenoxyethylammonium bis{(trifluoromethyl)sulfonyl}imide, [N1,1,12,2OPh][NTf2], dimethyldodecylphenoxyethylammonium dicyanamide, [N1,1,12,2OPh][DCA], benzyldimethyldodecylammonium bis{(trifluoromethyl)sulfonyl}imide, [N1,1,12,Bz][NTf2] and benzyldimethyldodecylammonium dicyanamide, [N1,1,12,Bz][DCA] have been tested. The selectivity and the solute distribution ratio of separation water/butan-1-ol were calculated and compared to the literature data. The complete solubility of butan-1-ol in the proposed ILs was observed at T = 328.15 K and pressure 101.3 kPa. The [N1,1,12,Bz][NTf2] is picked out as the most potential candidate as an extractant of butan-1-ol from water. The [N1,1,12,Bz][NTf2] shows only slightly lower selectivity than that observed in few phosphonium-based IL. The experimental tie-lines were successfully correlated with non-random two liquid NRTL model.Author | |||||
Journal series | Fluid Phase Equilibria, ISSN 0378-3812, (N/A 100 pkt) | ||||
Issue year | 2019 | ||||
Vol | 485 | ||||
Pages | 23-31 | ||||
Publication size in sheets | 0.5 | ||||
Keywords in English | Water/butan-1-ol separationAmmonium-based ionic liquidsLLE in ternary systemsCorrelationSelectivitySolute distribution ratio | ||||
ASJC Classification | ; ; | ||||
DOI | DOI:10.1016/j.fluid.2018.12.009 | ||||
URL | https://www.sciencedirect.com/science/article/pii/S0378381218305065 | ||||
Language | en angielski | ||||
File |
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Score (nominal) | 100 | ||||
Score source | journalList | ||||
Score | = 100.0, 20-10-2019, ArticleFromJournal | ||||
Publication indicators | = 4; : 2017 = 1.033; : 2017 = 2.197 (2) - 2017=2.214 (5) | ||||
Citation count* |
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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