Quaternary liquid-liquid equilibrium, solubility and critical states: Acetic acid - n-butanol - n-butyl acetate - water at 318.15 K and atmospheric pressure

被引:14
作者
Smirnov, Alexander [1 ]
Sadaeva, Anna [1 ]
Podryadova, Kristina [1 ]
Toikka, Maria [1 ]
机构
[1] St Petersburg State Univ, Dept Chem Thermodynam & Kinet, Univ Skiy Prospect 26, St Petersburg 198504, Russia
基金
俄罗斯科学基金会;
关键词
Solubility; Critical phenomena; Liquid-liquid equilibrium; n-butyl acetate; ETHYL-ACETATE; PROPIONATE-WATER; PROPYL ACETATE; SYSTEM; ETHANOL; PROPANOL; ALCOHOL; PHASE; ESTER;
D O I
10.1016/j.fluid.2019.04.020
中图分类号
O414.1 [热力学];
学科分类号
摘要
Experimental data on solubility, critical states and liquid liquid equilibrium (LLE) for the quaternary system acetic acid - n-butanol - n-butyl acetate - water and ternary subsystems acetic acid - n-butanol - water, n-butanol - n-butyl acetate - water and acetic acid - n-butyl acetate - water were obtained at 318.15 K and at atmospheric pressure. The solubility and critical states were studied by isothermal titration method ("cloud-point technique"). The LLE was determined using gas chromatographic analysis. Binodal surface in quaternary system and binodal curves in ternary systems were constructed. Compositions of critical points (plait points) and critical curve were determined. The NRTL model was applied to calculate the LLE data for the quaternary and ternary systems. The results of NRTL modeling are in good agreement with the experimental data. (C) 2019 Elsevier B.V. All rights reserved.
引用
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页码:102 / 108
页数:7
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