用醋酸基离子液体分离乙酸乙酯和乙醇共沸体系

IF 1.4 4区化学 Q4 CHEMISTRY, PHYSICAL

Journal of Solution Chemistry Pub Date : 2024-03-28 DOI:10.1007/s10953-023-01361-5

Wenxiu Li, Linzi Zhang, Xin He, Qingfeng Ni, Tao Zhang

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引用次数: 0

摘要

选择了三种离子液体（1-乙基-2,3-二甲基咪唑醋酸盐，[EMMIM][AC]；三丁基甲基醋酸铵，[N4,4,4,1][AC]；四乙基醋酸铵，[N2,2,2,2][AC]）。在 101.3 KPa 下测量了三元混合物（醋酸盐 + 乙醇 + IL）的汽液平衡 (VLE) 数据。采用 NRTL 方程对数据进行相关分析。根据 NRTL 模型，对于[N2,2,2,2][AC]、[EMMIM][AC]和[N4,4,4,1][AC]，完全消除共沸物的最小摩尔分数分别为 0.015、0.020 和 0.022。从平均相对挥发度和σ曲线可以得出，分离能力顺序为[EMMIM][AC] > [N2,2,2,2][AC] > [N4,4,4,1][AC]。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Separation of Ethyl Acetate and Ethanol Azeotropic System by Acetate-Based Ionic Liquid

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Separation of Ethyl Acetate and Ethanol Azeotropic System by Acetate-Based Ionic Liquid

Three ionic liquids (ILs)(1-ethyl-2,3-dimethylimidazolium acetate, [EMMIM][AC]; tributyl-methylammonium acetate, [N_4,4,4,1][AC]; and tetraethylammonium acetate, [N_2,2,2,2][AC]) were chosen. The vapor–liquid equilibrium (VLE) data of ternary mixtures (acetate + ethanol + IL) were measured at 101.3 KPa. NRTL equation was used to correlate the data. From NRTL model, for [N_2,2,2,2][AC], [EMMIM][AC], and [N_4,4,4,1][AC], minimum mole fractions for completely eliminating azeotrope are 0.015, 0.020 and 0.022, respectively. From the average relative volatility and σ-profiles, it can be obtained that the separation ability order is [EMMIM][AC] > [N_2,2,2,2][AC] > [N_4,4,4,1][AC].

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来源期刊

Journal of Solution Chemistry 化学-物理化学

CiteScore

2.30

自引率

0.00%

发文量

审稿时长

3-8 weeks

期刊介绍： Journal of Solution Chemistry offers a forum for research on the physical chemistry of liquid solutions in such fields as physical chemistry, chemical physics, molecular biology, statistical mechanics, biochemistry, and biophysics. The emphasis is on papers in which the solvent plays a dominant rather than incidental role. Featured topics include experimental investigations of the dielectric, spectroscopic, thermodynamic, transport, or relaxation properties of both electrolytes and nonelectrolytes in liquid solutions.