Solubility of sodium chloride in phosphonium-based deep eutectic solvents

被引：15

作者：

Bagh, Fatemeh Saadat Ghareh ^{[1
]}

Hadj-Kali, Mohamed Kamel Omar ^{[3
]}

Mjalli, Farouq S. ^{[2
]}

Hashim, Mohd Ali ^{[1
]}

AlNashef, Inas M. ^{[3
]}

机构：

[1] Univ Malaya, Dept Chem Engn, Kuala Lumpur, Malaysia

[2] Sultan Qaboos Univ, Petr & Chem Engn Dept, Muscat, Oman

[3] King Saud Univ, Dept Chem Engn, Riyadh, Saudi Arabia

来源：

JOURNAL OF MOLECULAR LIQUIDS | 2014年 / 199卷

关键词：

Sodium; Sodium salt; Solubility; Ionic liquids; Deep eutectic solvents; NRTL; IONIC LIQUIDS; MOLTEN-SALTS; ELECTRODEPOSITION; LITHIUM; ANALOGS;

D O I：

10.1016/j.molliq.2014.09.025

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 sodium chloride (NaCl) in several phosphonium-based deep eutectic solvents (DESs) is studied in this work. Seven combinations of DESs were investigated. The solubility of NaCl increased with temperature in all DESs at all combinations. The type of salt and hydrogen bond donor (HBD) and the salt:HBD mole ratio of the DES affected the solubility of NaCl. The solubility of NaCl in DESs that use ethylene glycol or glycerol (neutral molecules) as HBDs is very low in comparison to DESs that use zinc (H) chloride (ZnCl2) or ferric (III) chloride (FeCl3) which are metal halides as complexing agents. DESs containing ZnCl2 produced the highest solubility. Ethyltriphenylphosphonium bromide:ZnCl2 DES possessed a NaCl solubility of 88.500 wt.% at 111 degrees C, and tetrabutylphosphonium bromide:ZnCl2 DES possessed NaCl solubilities of 70.120 wt.% and 75.000 wt.% at 100 degrees C and 160 degrees C, respectively. The thermodynamic activity coefficient non-random two-liquid (NRTL) model was used to correlate the solubility of NaCl in the studied DESs. The calculated values in some DESs showed satisfactory agreement with the experimental values. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：344 / 351

页数：8