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

被引:0
作者
Li, Wenxiu [1 ]
Zhang, Linzi [1 ]
He, Xin [1 ]
Ni, Qingfeng [1 ]
Zhang, Tao [1 ]
机构
[1] Shenyang Univ Chem Technol, Liaoning Prov Key Lab Chem Separat Technol, Shenyang 110142, Peoples R China
基金
美国国家科学基金会;
关键词
Vapor-liquid equilibrium; Ethyl acetate; NRTL model; Ethanol; Ionic liquids; EXTRACTIVE DISTILLATION; PLUS METHANOL; VAPOR; EQUILIBRIUM; MIXTURE; CARBONATE;
D O I
10.1007/s10953-023-01361-5
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Three ionic liquids (ILs)(1-ethyl-2,3-dimethylimidazolium acetate, [EMMIM][AC]; tributyl-methylammonium acetate, [N-4,N-4,N-4,N-1][AC]; and tetraethylammonium acetate, [N-2,N-2,N-2,N-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,N-2,N-2,N-2][AC], [EMMIM][AC], and [N-4,N-4,N-4,N-1][AC], minimum mole fractions for completely eliminating azeotrope are 0.015, 0.020 and 0.022, respectively. From the average relative volatility and sigma-profiles, it can be obtained that the separation ability order is [EMMIM][AC] > [N-2,N-2,N-2,N-2][AC] > [N-4,N-4,N-4,N-1][AC].
引用
收藏
页码:1052 / 1073
页数:22
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