Solution Thermodynamics of Caprolactam in Different Monosolvents

被引：9

作者：

Guo, Song ^{[1
]}

Su, Wei ^{[1
,2
]}

Hao, Hongxun ^{[1
,2
]}

Luan, Yanan ^{[1
]}

Li, Xin ^{[1
]}

Gao, Siyang ^{[3
]}

Huang, Xin ^{[1
,2
]}

机构：

[1] Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China

[2] Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin 300072, Peoples R China

[3] China Natl Tobacco Corp Liaoning Prov Co, Shenyang 110062, Liaoning, Peoples R China

来源：

JOURNAL OF CHEMICAL AND ENGINEERING DATA | 2021年 / 66卷 / 01期

基金：

中国国家自然科学基金;

关键词：

SOLUBILITY; WATER;

D O I：

10.1021/acs.jced.0c00741

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In this work, the solubility data of caprolactam (CPL) in 18 solvents were measured from 278.15 to 313.15 K by a static gravimetric method. The results illustrated that with increasing temperature, solubility of CPL increased. The solubility in 2-methoxyethanol is the highest, whereas the lowest for n-Heptane. Additionally, the modified Apelblat equation, the nonrandom two-liquid (NRTL) model, and the lambda h equation were used to fit solubility data of CPL obtained in all of the 18 solvents by experimental methods. It can be seen from the results that all of the four selected models could provide preferable fitting results with average relative deviation lower than 5%. Furthermore, the thermodynamic properties of CPL during the dissolving process were also calculated and analyzed based on the NRTL model and experimental solubility data, including the enthalpy change, the Gibbs energy change, and the entropy change during the dissolution process.

引用

页码：494 / 503

页数：10

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