Thermodynamic properties of N-octyl pyridinium hexafluorophosphate ionic liquid: Characterization and application in separation of the azeotrope

被引：7

作者：

Li, Yanrui ^{[1
]}

Wang, Qiang ^{[1
]}

Li, Xiaoping ^{[1
]}

Li, Zhansheng ^{[2
]}

Li, Jing ^{[1
]}

Hu, Yanbiao ^{[1
]}

Wang, Bo ^{[1
]}

机构：

[1] Xinjiang Univ, Key Lab Coal Cleaning Convers & Chem Engn Proc, Coll Chem Engn, Urumqi 830046, Xinjiang, Peoples R China

[2] Dalian Univ Technol, Coll Chem Engn, Dalian 116081, Liaoning, Peoples R China

来源：

JOURNAL OF MOLECULAR LIQUIDS | 2022年 / 350卷

基金：

中国国家自然科学基金;

关键词：

Inverse gas chromatography; Thermodynamic parameters; Vapor-liquid equilibrium; The NRTL model; Azeotropic mixture; INVERSE GAS-CHROMATOGRAPHY; ISOBARIC VAPOR-LIQUID; 2ND VIRIAL-COEFFICIENTS; SOLUBILITY PARAMETER; INFINITE DILUTION; ORGANIC SOLUTES; METHANOL; EQUILIBRIUM; TEMPERATURE; PIPERIDINIUM;

D O I：

10.1016/j.molliq.2021.118434

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：

The experimental data of the weight fraction activity coefficient (Omega(infinity)(12)), the Flory-Huggins interaction parameter (chi(infinity)(12)), the activity coefficient at infinite dilution (gamma(infinity)(12)) and the Hildebrand solubility parameters (delta(2)) involving N-octyl pyridinium hexafluorophosphate ([OPY][PF6]) ionic liquid (IL) have been evaluated by Inverse gas chromatography (IGC). The values indicated the interaction of solvents-IL depended on the structure of the solvents and the experimental temperatures. Based on IGC data, the isothermal vapor-liquid equilibrium (VLE) data of solvent-IL at 343.15 K were derived and related to the NRTL model. The acquired binary interaction parameters have a great significance in order to model. The equilibrium phase diagram of the [OPY][PF6]-acetone/chloroform-methanol ternary system was obtained by Aspen Plus simulation. The result showed that the IL can be used as a potential solvent for separating azeotropic mixtures of chloroform (1)/methanol (2) and acetone (1)/methanol (2). (C) 2022 Elsevier B.V. All rights reserved.

引用

页数：8

共 59 条

[11] Isobaric Vapor-Liquid Equilibrium for Acetone plus Methanol plus Phosphate Ionic Liquids [J].