Salt Effect on the Isobaric Vapor-Liquid Equilibrium Study of Binary Mixtures H2O-NMP (N-Methyl-2-pyrrolidone)

被引：2
作者：
Wang, Baorong [1 ]
Qian, Hongliang [2 ]
Gao, Ziya [1 ]
Wu, Xiankun [1 ]
Yang, Guoqiang [1 ]
Zhou, Zheng [1 ]
Zhang, Feng [1 ]
Zhang, Zhibing [1 ]
机构：
[1] Nanjing Univ, Sch Chem & Chem Engn, Dept Chem Engn, Nanjing 210023, Peoples R China
[2] China Pharmaceut Univ, Sch Engn, Nanjing 210009, Peoples R China
来源：
ACS OMEGA | 2020年 / 5卷 / 48期
基金：
中国国家自然科学基金;
关键词：
PLUS WATER; SYSTEM; POLYIMIDES;
D O I：
10.1021/acsomega.0c04056
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
To study the salt effect of recovering N-methyl-2-pyrrolidone (NMP) from the waste liquid produced in the polyphenylene sulfide (PPS) synthesis process, this study presents vapor-liquid equilibrium (VLE) measurement and correlation for water + NMP, water + NMP + lithium chloride, and water + NMP + sodium chloride at p = 101.3 kPa. The salt effect is discussed and the salts follow the order of lithium chloride > sodium chloride. The NRTL model was used for the correlation with binary parameters of water + NMP, water + NMP + lithium chloride, and water + NMP + sodium chloride. The correlation showed good agreement with experimental data; root-mean-square deviations are less than 0.48 K for the equilibrium temperature and 0.005 for the vapor-phase mole fraction of water.
引用
收藏
页码：31036 / 31043
页数：8
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