Solubility and Thermodynamic Properties of (1R,2R)-(+)-1,2-Diaminocyclohexane L-Tartrate in Methanol (Ethanol or 2-Propanol) plus Water Binary Solvents at Various Temperatures

被引：0

作者：

Li, Huanxin ^{[1
]}

Zhang, Haihan ^{[1
]}

Dou, Yonghui ^{[1
]}

Xu, Li ^{[1
]}

Liu, Guoji ^{[1
]}

机构：

[1] Zhengzhou Univ, Sch Chem Engn & Energy, Zhengzhou 450001, Henan, Peoples R China

来源：

RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A | 2019年 / 93卷 / 04期

关键词：

DHT; solubility; thermodynamic property; mixed solvent; MIXTURES; PURE;

D O I：

10.1134/S0036024419040149

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 solubility of (1R,2R)-(+)-1,2-diaminocyclohexane L-tartrate (DHT) in methanol + water, ethanol + water, and 2-propanol + water mixed solvents were measured using a synthetic method with alcohols mass fractions varying from 0.1 to 0.5 over 278.15 to 318.15 K under atmospheric pressure (P = 0.1 MPa). It was proved that the solubility of DHT in the three binary solvents increased with increasing temperature, while decreased with the mass fraction of alcohols rising. The experimental solubility data were correlated by the modified Apelblat equation and Sun model. The modified Apelblat model showed better agreement with the experimental data than the other model. Furthermore, the thermodynamic parameters including , , and for DHT in the dissolution process were obtained from Van't Hoff plots.

引用

页码：696 / 702

页数：7

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