Extraction behavior of indium with TOPO into ionic liquids

イオン液体へのTOPOによるインジウムの抽出挙動

久保田富生子*; 下堀陽佑*; 小柳裕介*; 中島一紀*; 下条晃司郎 ; 神谷典穂*; 後藤雅宏*

Kubota, Fukiko*; Shimobori, Yosuke*; Koyanagi, Yusuke*; Nakashima, Kazunori*; Shimojo, Kojiro; Kamiya, Noriho*; Goto, Masahiro*

The extraction behavior of In $^{3+}$ into ionic liquids, [C $_{n}$ mim][Tf $_{2}$ N], was investigated with trioctylphosphine oxide (TOPO) as the extractant and compared with that of a conventional organic solvent system. In the n-dodecane system, the extractability of In $^{3+}$ increased with increasing hydrochloric acid concentration in the feed aqueous phase. On the contrary when using ionic liquids, In $^{3+}$ was more extracted at lower concentrations of hydrochloric acid. The contrast between the two systems is probably due to the difference in their extraction mechanisms. Extraction and separation properties of In $^{3+}$ from Sn $^{4+}$ , Fe $^{3+}$ and Al $^{3+}$ were also examined. Indium was quantitatively extracted into the ionic liquid phase and the separation efficiency from other metal ions, especially from Fe $^{3+}$ was enhanced compared with that in the organic solvent system.

発表言語	:	English
掲載資料名	:	Solvent Extraction Research and Development, Japan
巻	:	16
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ページ数	:	p.142 - 146
発行年月	:	2009/00
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受委託・共同研究相手機関	:	九州大学

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登録番号 : AA20090198
抄録集掲載番号 : 37001151
論文投稿番号 : 6163

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