Study on separation of Eu(II) from trivalent rare earths via electro-reduction and ion exchange

Ludek Jelinek, Yuezhou Wei, Tsuyoshi Arai, Mikio Kumagai

研究成果: Article査読

13 被引用数 (Scopus)

抄録

Separation of Eu(II) from trivalent rare earths was carried out in 0.01 mol dm-3 hydrochloric acid medium. Eu(III) was selectively reduced to Eu(II) at glassy carbon cathode in flow type electrolyzer. For Eu(II) separation strong acid cation exchanger based on sulfonated polystyrene/DVB copolymer impregnated into porous silica beads was used. Breakthrough and chromatography curves were measured. Eu(II) exhibited lower affinity towards the sorbent than trivalent rare earths and therefore it was the first species to breakthrough the column. Excellent separation from middle rare earths was achieved while the separation from heavy rare earths was difficult. The back-oxidation of Eu(II) was a problem despite all the measures that were taken to prevent oxidation by dissolved oxygen and photo-oxidation.

本文言語English
ページ(範囲)341-343
ページ数3
ジャーナルJournal of Alloys and Compounds
451
1-2
DOI
出版ステータスPublished - 2008 2 28
外部発表はい

ASJC Scopus subject areas

  • 材料力学
  • 機械工学
  • 金属および合金
  • 材料化学

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