Phase Behavior of Ionic Liquids-Cesium Carbonate-Water Aqueous Two-phase Systems and Their Extraction of L-Tryptophan
Phase Behavior of Ionic Liquids-Cesium Carbonate-Water Aqueous Two-phase Systems and Their Extraction of L-Tryptophan
复制标题
离子液体-碳酸铯-水两相体系的相行为及其L-色氨酸的萃取
DOI：
10.1007/s40242-018-7148-8
复制
发表时间：
2018-02-01
影响因子：
3.1
通讯作者：
Hu Mancheng
中科院分区：
文献类型：
--
作者：
Li Shuang;Li Shuni;Hu Mancheng
研究了离子液体（ILs）、Cs2 CO 3和水组成的双水相体系（ATPs）的相行为和萃取能力。以溴化1-戊基-3-甲基咪唑（[C5 mim]Br）、溴化1-己基-3-甲基咪唑（[C6 mim] Br）、溴化1-庚基-3-甲基咪唑（[C7 mim]Br）和溴化1-辛基-3-甲基咪唑（[C8 mim]Br）4种离子液体为研究对象，探讨了烷基基团的影响。获得了288.15、298.15和308.15K下的双结点曲线和联络线。进一步研究了L-色氨酸在这种ATP中的分配行为。详细讨论了温度、pH、Cs2 CO 3浓度和离子液体结构对分配的影响。
Phase behavior and extraction ability of aqueous two-phase systems(ATPs) consisting of ionic liquids(ILs), Cs2CO3 and water were investigated in this paper. Four kinds of ionic liquids, namely, 1-amyl-3-methylimidazolium bromide([C5mim]Br), 1-hexyl-3-methylimidazolium bromide([C6mim]Br), 1-heptyl-3-methylimidazolium bromide ([C7mim]Br) and 1-octyl-3-methylimidazolium bromide([C8mim]Br), were examined to discuss the influence of alkyl groups. Binodal curves and tie-lines at 288.15, 298.15 and 308.15 K were obtained. The partitioning behavior for L-tryptophan in such ATPs was further investigated. The effect of temperature, pH, Cs2CO3 concentration and the structure of ionic liquids on the partitioning were discussed in detail.