Equilibrium Partitioning of Phenols and Phenyl Amines between [BF4]- Based Ionic Liquids and Aqueous Solution
Equilibrium Partitioning of Phenols and Phenyl Amines between [BF4]- Based Ionic Liquids and Aqueous Solution
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[BF4]基离子液体与水溶液之间苯酚和苯胺的平衡分配
DOI：
10.1524/zpch.2007.221.6.825
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
Jing Fan
中科院分区：
文献类型：
--
作者：
Yuanchao Pei;Jianji Wang;Kun Wu;Yang Zhao;Jing Fan
本文首次将离子液体[C6mim][BF4]和[C8mim][BF4]作为替代溶剂，从水溶液中萃取酚类和苯胺类有机污染物。实验结果表明，这些化合物的分配系数受水相pH值的强烈影响，并且这些溶质的分子形式被离子液体有效地萃取。这表明，苯酚和苯胺类化合物在离子液体中的分配主要是由溶质分子与离子液体阳离子之间的分散作用和溶质分子与离子液体阴离子之间的氢键作用驱动的。热力学性质也已确定为代表的提取过程。结果表明，分配过程是一个放热过程，并受焓项控制。初步的回收实验表明，[C8mim][BF4]离子液体可用于去除水溶液中的有机污染物，并具有良好的循环性能。
In this paper, ionic liquids [C6mim][BF4] and [C8mim][BF4] have been used, for the first time, as alternative solvents for the extraction of organic pollutants such as phenols and phenyl amines from aqueous solution. The experimental results shown that partition coefficients of these compounds were strongly affected by pH of aqueous phase, and the molecular forms of these solutes were found to be efficiently extracted by the ionic liquids. This suggested that the partitioning of the phenols and phenyl amines was driven mainly by the dispersion interactions between the molecular forms of the solutes and cation of the ionic liquids and the hydrogen bonding interactions between the solutes and anion of the ionic liquids. Thermodynamic properties have also been determined for representative extraction processes. It is shown that the partitioning process is exothermic in nature and controlled by enthalpy term. Preliminary recovery experiments suggest that [C8mim][BF4] ionic liquid may be adapted to removal organic pollutants from aqueous solution with good recycling.
影响因子：
2.9
作者：
Wimley, WC;Creamer, TP;White, SH
通讯作者：
White, SH