Extraction of Phenols from Water with Functionalized Ionic Liquids
Extraction of Phenols from Water with Functionalized Ionic Liquids
复制标题
用功能化离子液体萃取水中的酚类
DOI：
10.1021/ie503432n
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发表时间：
2014-12-24
影响因子：
4.2
通讯作者：
Zhou, Dongdong
中科院分区：
文献类型：
--
作者：
Fan, Yunchang;Li, Yun;Zhou, Dongdong
合成了一系列羟基、苄基和二烷基功能化离子液体(ILS)，考察了它们对苯酚、间苯二酚、对硝基苯酚、愈创木酚和邻甲酚的萃取性能。结果表明，pH值、加盐、相比和IL的化学结构对5种酚类物质的萃取效率有显著影响。以非电离形式存在的酚类物质更容易转变为IL相。离子液体的阴阳离子氢键性质是影响萃取率的主要结构因素，且随着酚类疏水性的增加而增加。这些结果对分离科学和相关工业过程中酚的液-液萃取和浓缩具有重要的应用价值。
A series of hydroxyl-, benzyl-, and dialkyl-functionalized ionic liquids (ILs) were synthesized, and their extraction abilities for phenol, resorcinol, sigma-nitrophenol, guaiacol, and o-cresol were investigated. Results showed that the extraction efficiencies of the five phenols were significantly influenced by the pH values, salt added, phase ratio, and chemical structure of the IL. Phenols present in nonionized forms were preferable to transfer into IL phases. The anion/cation hydrogen-bonding characters of ILs were the main structural factors affecting the extraction efficiency, which also increased with increased hydrophobicity of phenols. These results are promising for the liquidliquid extraction and enrichment of phenols in separation science and related industrial processes.