Acetone + 1-ethyl-3-methylimidazolium acetate phase diagram: A correlation challenge
نویسندگان
چکیده
Several physical properties and the isobaric vapour-liquid equilibria at 101.32, 50, 30 kPa were measured for binary system consisting of acetone ionic liquid 1-ethyl-3-methyl-imidazolium acetate. Liquid-liquid equilibrium data also temperatures from 298.15 up to 328.35 K atmospheric pressure. An hourglass-shaped miscibility gap was found. The simultaneous correlation both VLE LLE regions 101.32 addressed. NRTL model, considering different options formulate temperature dependence parameters, tested found unable correlate whole set data. A detailed analysis excess Gibbs energy demonstrated limitations classical equation allowed definition a new model with correction term. unique parameters used simultaneously sets very low deviations experimental Moreover, corrected function overcomes some uncertainty problems that may occur in liquid-liquid calculations.
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ژورنال
عنوان ژورنال: Fluid Phase Equilibria
سال: 2022
ISSN: ['0378-3812', '1879-0224']
DOI: https://doi.org/10.1016/j.fluid.2022.113419