Halogen-free water-immiscible ionic liquids based on tetraoctylammonium cation and dodecylsulfate and dodecylbenzenesulfonate anions, and their application as chelate extraction solvent
Halogen-free water-immiscible ionic liquids based on tetraoctylammonium cation and dodecylsulfate and dodecylbenzenesulfonate anions, and their application as chelate extraction solvent
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DOI：
10.2116/analsci.22.199
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发表时间：
2006-02-01
影响因子：
1.6
通讯作者：
Hirayama, N
中科院分区：
文献类型：
--
作者：
Tsukatani, T;Katano, H;Hirayama, N
四辛基铵阳离子与十二烷基硫酸根和十二烷基苯磺酸根阴离子形成水不混溶的室温离子液体。离子液体是无卤素的，并且可以被认为是环境友好的溶剂。在25 ℃时，水在十二烷基硫酸四辛基铵和十二烷基苯磺酸四辛基铵中的溶解度分别为2.8%和4.0%，密度分别为0.92和0.93 g cm（-3）。离子液体在25 ℃下与水形成稳定的界面。以4，4，4-三氟-1-（2-噻吩基）-1，3-丁二酮为萃取剂，考察了十二烷基硫酸四辛基铵作为螯合萃取剂的可能性。十二烷基硫酸四辛基铵对二价过渡金属离子表现出很高的萃取性能。
The tetraoctylammonium cation forms water-immiscible room temperature ionic liquids with dodecylsulfate and dodecylbenzenesulfonate anions. The ionic liquids are halogen-free and can be considered environmentally friendly solvents. At 25 degrees C, the solubilities of water in tetraoctylammonium dodecylsulfate and tetraoctylammonium dodecylbenzenesulfonate were 2.8 and 4.0%, respectively, and the densities were 0.92 and 0.93 g cm(-3). The ionic liquids formed stable interfaces with water at 25 degrees C. The possible use of tetraoctylammonium dodecylsulfate as chelate extraction solvent was evaluated by using 4,4,4-trifluoro-1-(2-thienyl)-1,3-butanedione as extractant. Tetraoctylammonium dodecylsulfate showed high extraction performance for divalent transition metal cations.