Ebulliometric determination of vapor-liquid equilibria for binary mixtures of NMP with some cyclic compounds

被引：7

作者：

Reddy, K. Rayapa ^{[1
]}

Kumar, D. Bala Karuna ^{[1
]}

Rao, G. Srinivasa ^{[2
]}

Sri, P. B. Sandhya ^{[3
]}

Begum, Zareena ^{[1
]}

Rambabu, C. ^{[1
]}

机构：

[1] Acharya Nagarjuna Univ, Dept Chem, Nagarjunanagar, AP, India

[2] Andhra Loyola Coll, Dept Phys, Vijayawada, AP, India

[3] DAR Coll, Dept Phys, Nuzvid, AP, India

来源：

JOURNAL OF MOLECULAR LIQUIDS | 2014年 / 193卷

关键词：

Vapor-liquid equilibrium; Ebulliometer; Activity coefficients; Wilson model; Gibbs energy; EXCESS MOLAR VOLUMES; N-METHYL-2-PYRROLIDONE PLUS; MOLECULAR-INTERACTIONS; N-METHYLPYRROLIDONE; SYSTEMS; N; N-DIMETHYLFORMAMIDE; HYDROCARBONS; VISCOSITIES; CYCLOHEXANE; SOLVENTS;

D O I：

10.1016/j.molliq.2013.12.032

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：

Vapor-liquid equilibrium results of the binary systems of N-methyl-2-pyrrolidone with cyclohexylamine, cyclohexanol, and cyclohexene at the local atmospheric pressure of 95.3 kPa are experimentally obtained in the entire composition range of the component liquids using Swietoslawski ebulliometer. The experimental data are correlated with Wilson model. The investigated systems show positive and negative deviations from Raoult's law, and also indicate the non-formation of azeotropic mixtures. The liquid phase activity coefficients are estimated considering the non-ideal behavior of the mixtures. Computed vapor phase mole fractions, activity coefficients, and the values of excess Gibbs energy with the optimum Wilson parameters are presented and the results are correlated to the molecular interactions between the dissimilar molecules of the binary mixtures. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：220 / 225

页数：6

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