Synergistic effect of 18-crown-6 derivatives on chelate extraction of lanthanoids(III) into an ionic liquid with 2-thenoyltrifluoroacetone
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概要
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The synergistic effect of 18-crown-6 derivatives, such as 18-crown-6 (18C6), cis-dicyclohexano-18-crown-6 (DC18C6) and dibenzo-18-crown-6 (DB18C6), on the extraction of trivalent lanthanoids (Ln3+) into an ionic liquid, 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide, with 2-thenoyltrifluoroacetone (Htta) was investigated. The extractability of lighter Ln3+ was enhanced by adding 18C6 or DC18C6, whereas no enhancement of the extractability was observed by adding DB18C6. Moreover, the synergistic effect by the crown ether (CE) was increased along with the decrease in the atomic number of Ln. In the synergistic extraction system, Ln3+ was extracted as cationic ternary complexes Ln(tta)2(CE)+ and Ln(tta)(CE)2+, and it was suggested that the formation of the Ln(tta)(CE)2+ complex as an extracted species results in the large synergistic effect. This synergistic effect originated in a size-fitting effect of CE on complexation to Ln3+. 2010 © The Japan Society for Analytical Chemistry.
- The Japan Society for Analytical Chemistry = 日本分析化学会 (JSAC)の論文
- 2010-05-10
著者
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Imura Hisanori
Div. Of Material Sciences Graduate School Of Natural Sci. And Technol. Kanazawa Univ.
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HIRAYAMA Naoki
Division of Material Sciences, Graduate School of Natural Science and Technology, Kanazawa Universit
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IMURA Hisanori
Division of Material Sciences, Graduate School of Natural Science and Technology, Kanazawa Universit
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OKAMURA Hiroyuki
Division of Material Chemistry, Graduate School of Natural Science and Technology, Kanazawa Universi
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SHIMOJO Kojiro
Division of Environment and Radiation Science, Nuclear Science and Energy Directions, Japan Atomic E
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Imura Hisanori
Division Of Material Sciences Graduate School Of Natural Science And Technology Kanazawa University
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Imura Hisanori
Environmental Sciences Faculty Of Sciences Ibaraki University
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MORITA Kotaro
Division of Material Sciences, Graduate School of Natural Science and Technology, Kanazawa Universit
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NAGANAWA Hirochika
Division of Environment and Radiation Sciences, Nuclear Science and Engineering Directorate, Japan A
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Morita Kotaro
Division Of Material Sciences Graduate School Of Natural Science And Technology Kanazawa University
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Okamura Hiroyuki
Division Of Material Chemistry Graduate School Of Natural Science And Technology Kanazawa University
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Hirayama Naoki
Division Of Material Chemistry Graduate School Of Natural Science And Technology Kanazawa University
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Shimojo Kojiro
Division Of Environment And Radiation Sciences Nuclear Science And Engineering Directorate Japan Ato
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Naganawa Hirochika
Division Of Environment And Radiation Sciences Nuclear Science And Engineering Directorate Japan Ato
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NAGANAWA Hirochika
Division of Chemistry for Nuclear Engineering, Nuclear Science and Engineering Directorate, Japan Atomic Energy Agency (JAEA)
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SHIMOJO Kojiro
Division of Chemistry for Nuclear Engineering, Nuclear Science and Engineering Directorate, Japan Atomic Energy Agency (JAEA)
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OKAMURA Hiroyuki
Division of Chemistry for Nuclear Engineering, Nuclear Science and Engineering Directorate, Japan Atomic Energy Agency (JAEA)
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