Separation of lanthanoid ions by green extraction systems with natural ligand and ionic liquid

• Project/Area Number: 25620108
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Analytical chemistry
• Research Institution: Kanazawa University
• Principal Investigator: IMURA Hisanori 金沢大学, 物質化学系, 教授 (60142923)
• Co-Investigator(Kenkyū-buntansha): NAGATANI Hirohisa 金沢大学, 物質化学系, 准教授 (90346297) ; MORITA Kotaro 金沢大学, 物質化学系, 助教 (70396430)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000); Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
• Keywords: 溶媒抽出 / 液体膜分離 / イオン液体 / ランタノイド

Outline of Final Research Achievements

Novel synergistic extraction of lanthanoid(III) ions (Ln) with hinokitiol (Hipt) or β-diketones as an acidic chelating agent was studied in the presence of a hydrophobic neutral ligand such as 4,7-diphenyl-1,10-phenanthroline (dpp) and trioctylphosphine oxide (TOPO). When 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide was used as the extracting solvent, the extraction of heavier Ln with acetylacetone and benzoylacetone in the presence of TOPO was remarkably enhanced, resulting in a significant improvement in the separation of Ln. The present synergism was caused by the formation of cationic ternary complexes followed by ion exchange into the ionic liquid. Similar cationic ternary complexes were also extracted with Hipt and dpp in o-dichlorobenzene. This synergistic extraction system was applied to the supported liquid membrane (SLM) transport of Ln. The heavier Ln was selectively transported through the SLM and concentrated into the acidic aqueous phase.

Research Products

• [Journal Article] Salting-out Phase Separation System of Water-Tetrahydrofuran with Co-using 1-Butyl-3- methylimidazolium Chloride and Sodium Chloride for Possible Extraction Separation of Chloro-complexes (2014)
  • Author(s): Naoki Hirayama, Takaaki Higo, Hisanori Imura
  • Journal Title: Solv. Extr. Res. Devel., Jpn. Volume: 21 Pages: 71-76
  • NAID: 130005056983
  • Peer Reviewed / Open Access
• [Journal Article] Highly Selective Synergism for the Extraction of Lanthanoid(III) Ions with β-Diketones and Trioctylphosphine Oxide in an Ionic Liquid (2014)
  • Author(s): Hiroyuki Okamura, Hitomi Takagi, Taku Isomura, Kotaro Morita, Hirohisa Nagatani, Hisanori Imura
  • Journal Title: Analytical Sciences Volume: 30 Issue: 3 Pages: 323-325
  • DOI: 10.2116/analsci.30.323
  • NAID: 130004827415
  • ISSN: 0910-6340, 1348-2246
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Synergistic effects of tris(4-isopropyltropolonato)cobalt(III) on the extraction of lanthanum(III) and lutetium(III) with acetylacetone into benzene (2013)
  • Author(s): Michie Ebisawa, Akira Ohashi, Hisanori Imura, Kousaburo Ohashi
  • Journal Title: Solvent Extr. Res. Dev., Jpn. Volume: 20 Pages: 131-136
  • NAID: 130005056959
  • Peer Reviewed
• [Presentation] 一連の β-ジケトンと疎水性中性配位子を用いるランタノイド(III)のイオン液体抽出とその分離特性 (2014)
  • Author(s): 畠山瑞央, 岡村浩之, 森田耕太郎, 永谷広久, 下条晃司郎, 長縄弘親, 井村久則
  • Organizer: 第33回溶媒抽出討論会
  • Place of Presentation: 神戸市
  • Year and Date: 2014-12-11
• [Presentation] 協同効果系に基づく含浸型液体膜によるランタノイド(III)イオンの輸送 (2014)
  • Author(s): 佐伯匡哉, 森田耕太郎, 永谷広久, 井村久則
  • Organizer: 第33回溶媒抽出討論会
  • Place of Presentation: 神戸市
  • Year and Date: 2014-12-11
• [Presentation] β-ジケトン-TOPO-イオン液体抽出系における重希土類選択的な協同効果 (2014)
  • Author(s): 畠山瑞央, 岡村浩之, 森田耕太郎, 永谷広久, 下条晃司郎, 長縄弘親, 井村久則
  • Organizer: 日本分析化学会第63年会
  • Place of Presentation: 東広島市
  • Year and Date: 2014-09-17
• [Presentation] トロポロン-二座アミン協同効果系を用いたランタノイド(III)イオンの液膜分離 (2014)
  • Author(s): 佐伯匡哉, 森田耕太郎, 永谷広久, 井村久則
  • Organizer: 日本分析化学会第63年会
  • Place of Presentation: 東広島市
  • Year and Date: 2014-09-17
• [Presentation] シナジーへの挑戦 (2014)
  • Author(s): 井村久則
  • Organizer: 日本分析化学会中部支部北陸地区講演会
  • Place of Presentation: 金沢市
  • Year and Date: 2014-07-11
  • Invited
• [Presentation] β-ジケトンと疎水性中性配位子を用いたイオン液体協同効果によるランタノイドの選択的抽出分離 (2014)
  • Author(s): 岡村浩之, 髙木仁美, 磯村拓, 畠山瑞央, 森田耕太郎, 永谷広久, 井村久則
  • Organizer: 第31回希土類討論会
  • Place of Presentation: 船橋市
  • Year and Date: 2014-05-22
• [Presentation] β-ジケトンと疎水性中性配位子によるランタノイド(III)のイオン液体協同効果抽出：β-ジケトンの特異な効果 (2013)
  • Author(s): 井村久則, 岡村浩之, 髙木仁美, 磯村拓, 畠山瑞央, 森田耕太郎, 永谷広久
  • Organizer: 第32回溶媒抽出討論会
  • Place of Presentation: 名古屋大学
• [Presentation] イオン液体抽出系におけるトリス(2-テノイルトリフルオロアセトナト)ユウロピウム(III)の分配定数に対する特異な溶媒効果 (2013)
  • Author(s): 岡村浩之, 下条晃司郎, 長縄弘親, 井村久則
  • Organizer: 第 73 回分析化学討論会
  • Place of Presentation: 北海道大学函館キャンパス
• [Book] 基礎分析化学 (2015)
  • Author(s): 井村久則（分担執筆）
  • Total Pages: 198
  • Publisher: 朝倉書店
• [Remarks] 金沢大学理工学域物質化学類化学コース分析化学研究室
  • URL: http://chem.s.kanazawa-u.ac.jp/anal/index.html