共沸物
相对波动率
异丙基
化学
非随机双液模型
异丙醇
等压法
萃取蒸馏
有机化学
汽液平衡
热力学
活度系数
色谱法
水溶液
溶剂
物理
蒸馏
作者
Lianzheng Zhang,Jie Wang,Lin Yang,Donghai Xu,Yixin Ma,Jun Gao,Yinglong Wang
标识
DOI:10.1016/j.cjche.2022.07.022
摘要
Based on the COSMO-SAC model, 1-ethyl-3-methylimidazolium acetate and 1-ethyl-3-methylimidazolium p-toluenesulfonate were selected from 30 ILs as entrainers to investigate the separation of the isopropyl alcohol + isopropyl acetate azeotrope. Two screening indicators, σ-profile and infinite dilution selectivity (S∞), were adopted as the basis. The isobaric vapor–liquid equilibrium experiments for isopropyl alcohol + isopropyl acetate binary system and isopropyl alcohol + isopropyl acetate + confirmed ILs ternary systems were performed at the pressure of atmospheric pressure. The experimental measurement demonstrated that the adopt ILs enhanced the relative volatility of the above alcohol-ester azeotrope, leading to the elimination of the azeotropic point with a certain amount ILs. Meanwhile, the thermodynamic correlation for two systems containing ILs was explored with the NRTL model, which also reflects the extensive applicability of that by comparing the deviation between experimental and calculated data. And its binary interaction parameters were regressed, which can provide a basis for its simulation process.
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