Separation of rare earths in nitric acid medium by a novel silica-based pyridinium anion exchange resin

Tsuyoshi Arai, Yuezhou Wei, Mikio Kumagai, Kenichi Horiguchi

研究成果: Conference article

14 引用 (Scopus)

抜粋

To separate rare earths in nitric acid medium by anion exchange process, a novel silica-based macro-reticular anion exchange resin (SiPyR-N4) with pyridinium as functional group has been synthesized. It was found that the SiPyR-N4 resin exhibits a quite strong adsorption for some rare earths especially the light rare earth elements such as La, Ce, Pr, Nd and Pm whose distribution coefficients onto SiPyR-N4 reach 10-25 dm3/kg-resin, which are much higher than the reported values for these elements with conventional anion exchange resins. The results from the column experiments show that the rare earths can be separated into the three groups: light, moderate and heavy rare earths and, a perfect separation between La-Pr group and Sm-Gd group can be achieved.

元の言語English
ページ(範囲)1008-1012
ページ数5
ジャーナルJournal of Alloys and Compounds
408-412
DOI
出版物ステータスPublished - 2006 2 9
外部発表Yes
イベントProceedings of the Rare Earths'04 in Nara, Japan -
継続期間: 2004 11 72004 11 12

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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