Solid-Liquid and Solid-Liquid-Liquid Equilibria in the KI+H2O+i-C3H7OH Ternary System within 10-120°C

被引：6
作者：
Il'In, Konstantin K. [1 ]
Cherkasov, Dmitry G. [1 ]
机构：
[1] Saratov NG Chernyshevskii State Univ, Inst Chem, Dept Gen & Inorgan Chem, Saratov 410012, Russia
来源：
CHEMICAL ENGINEERING COMMUNICATIONS | 2016年 / 203卷 / 05期
关键词：
Critical phenomena; isopropyl alcohol; phase equilibria; potassium iodide; salting-out; solubility; TOPOLOGICAL TRANSFORMATION; WATER; ISOPROPANOL;
D O I：
10.1080/00986445.2015.1076802
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The solubility of components, phase equilibria, and critical phenomena in the ternary potassium iodide (KI) +water (H2O) +isopropyl alcohol (i-C3H7OH) system were studied in the range of 10-120 degrees C by the visual polythermal method. Potassium iodide was found to have a salting-out effect at temperatures above 97.0 degrees C, and homogeneous water-isopropanol solutions were delaminated. The formation temperature of the critical tie line of the monotectic state (97.0 degrees C) and the compositions of the solutions corresponding to the critical liquid-liquid solubility points at 104.2, 110.1, 115.6, and 120.1 degrees C were determined. The distribution coefficients of isopropyl alcohol between the organic and aqueous phases in the monotectic state at 100.0, 110.0, and 120.0 degrees C were calculated. The salting-out effect of potassium iodide relative to isopropyl alcohol from aqueous solution is small (the distribution coefficient K-d of isopropanol is 1.8 at 100.0 degrees C) and slightly increases with temperature (K-d is 3.4 at 120.0 degrees C).
引用
收藏
页码：642 / 648
页数：7
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