| Abstract
| - Liquid−liquid equilibrium data for tert-amyl ethyl ether (TAEE) + ethanol + 1-octyl-3-methylimidazoliumchloride were measured experimentally at 298.15 K. The experimental data were obtained by directanalysis of phases at equilibrium by 1H NMR and then correlated using the nonrandom two-liquidequation. The nonrandomness parameter (α) was fixed to 0.1, 0.2, and 0.3, and the best results werefound with α = 0.1. Distribution coefficients and selectivities obtained show that the ionic liquid usedcan be an excellent extractant agent of ethanol from its mixtures with TAEE, thus allowing etherpurification.
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