Liquid–liquid extraction of p-xylene from their mixtures with alkanes using 1-butyl-1-methylmorpholinium tricyanomethanide and 1-butyl-3-methylimidazolium tricyanomethanide ionic liquids

Marek Królikowski

Abstract

Liquid – liquid experimental data for four ternary systems {1-butyl-1-methyl-morpholinium tricyanomethanide, [BMMOR][TCM], or 1-butyl-3-methylimidazolium tricyanomethanide, [BMIM][TCM] + p-xylene + octane, or decane} were determined at T = 298.15 K and atmospheric pressure. The separation of p-xylene from alkanes (octane, or decane) is performed by extraction with the tricyanomethanide - based ionic liquids. Good miscibility of p-xylene and practical complete immiscibility of alkanes in ionic liquids have been observed. Selectivity, S and solute distribution ratio, β at constant temperature for these mixtures were calculated and discussed. These parameters derived from the experimental equilibrium data were compared with the values for other ionic liquids available in the literature. The NRTL and UNIQUAC models were used to correlate experimental LLE data. Agreement between experimental and correlated data was satisfactory. The influence of the cation structure of the ionic liquid on the phase equilibrium and the separation ability of these ionic liquids was discussed. Additionally, the water content and basic physicochemical properties, such as: density, ρ and dynamic viscosity, η were determined for pure ILs at wide temperature range at ambient pressure.
Author Marek Królikowski ZChF
Marek Królikowski,,
- Department Of Physical Chemistry
Journal seriesFluid Phase Equilibria, ISSN 0378-3812
Issue year2016
Vol412
Pages107-114
Publication size in sheets0.5
Keywords in EnglishLiquid - liquid extraction; LLE of ternary system; Ionic liquids; p – Xylene; Density; Dynamic viscosity
DOIDOI:10.1016/j.fluid.2015.12.032
URL http://www.sciencedirect.com/science/article/pii/S0378381215302740
Languageen angielski
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Score (nominal)30
ScoreMinisterial score = 30.0, 28-11-2017, ArticleFromJournal
Ministerial score (2013-2016) = 30.0, 28-11-2017, ArticleFromJournal
Publication indicators WoS Impact Factor: 2016 = 2.473 (2) - 2016=2.499 (5)
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