Abstract
For separation of the azeotropes of water + 2-methyl-3-buten-2-ol by liquid–liquid extraction, methyl tert-butyl ether or butyl acetate or 4-methyl-2-pentanone or 2-ethyl-1-hexanol was selected as the extraction solvent. The liquid–liquid equilibrium (LLE) data for water + 2-methyl-3-buten-2-ol + (methyl tert-butyl ether/butyl acetate/4-methyl-2-pentanone/2-ethyl-1-hexanol) ternary systems at 308.2 K under 101.3 kPa were determined. The distribution coefficient and the separation factor were calculated to evaluate the extraction ability of different solvents. The Othmer–Tobias, Bachman, and Hand equations were applied to verify the reliability of the experimental LLE data. Meanwhile, the experimental LLE data were successfully correlated by the NRTL and UNIQUAC models with the root-mean-square deviations (RMSD) were less than 0.42%.
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