Hydrophobic amine-based binary mixtures of active pharmaceutical and food grade ingredients: characterization and application in indium extraction from aqueous hydrochloric acid media
Hydrophobic amine-based binary mixtures of active pharmaceutical and food grade ingredients: characterization and application in indium extraction from aqueous hydrochloric acid media
复制标题
DOI：
10.1039/d0gc02452j
复制
发表时间：
2020-10-21
期刊：
影响因子：
9.8
通讯作者：
Folden III, Charles M.
中科院分区：
文献类型：
--
作者：
Edgecomb, Joseph M.;Tereshatov, Evgeny E.;Folden III, Charles M.
在金属精炼工业中，危险且昂贵的溶剂用于关键金属的液-液萃取（LLE）的广泛使用已成为日益增长的废物来源。我们已经开发和表征了基于常见的药物和食品级化合物的室温液体疏水二元混合物，作为离子液体和常规溶剂的可持续，具有成本效益的替代品。此外，我们还引入了质子海绵（R）（1，8-双（二甲氨基）萘）的液体混合物，质子海绵是已知最强的有机碱之一。这些混合物已被施加到铟（iii）离子的盐酸溶液的液液萃取，显示在某些系统中的萃取效率大于99%。一个系统的方法来确定的基本机制的提取，特别是有关的电荷，溶解度，和络合的铟物种在有机相已经开发。
The wide spread use of hazardous and expensive solvents for the liquid-liquid extraction (LLE) of critical metals has been a growing source of waste in the metal refinement industry. We have developed and characterized room temperature liquid hydrophobic binary mixtures based on common pharmaceutical and food grade compounds as sustainable, cost effective alternatives to both ionic liquids and conventional solvents. Additionally, we introduce liquid mixtures with Proton Sponge (R) (1,8-bis(dimethylamino)naphthalene), one of the strongest known organic bases. These mixtures have been applied to the LLE of indium(iii) ions from hydrochloric acid solutions, displaying an extraction efficiency greater than 99% in some systems. A systematic approach to identifying the underlying mechanism of extraction, in particular relating to the charge, solubility, and complexation of the indium species in the organic phase has been developed.