Studies on the Anion Exchange Separation of Tetravalent Cerium in Nitric Acid Solution.

DOI 2 Citations

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Other Title
  • 硝酸溶液における四価セリウムのアニオン交換分離に関する研究

Description

Complex formation behavior of Ce (IV) and Ce (III) with NO3- has been examined. Anion exchange characteristics of Ce (IV) at various nitric acid concentration and temperature were measured. Furthermore, separation behavior of Ce (IV) from other light rare earth elements was investigated by anion exchange column. It was found that Ce (IV) forms anionic nitrato-complexes such as Ce (NO3) 5- and Ce (NO3) 62- at nitric acid concentration above 1 mol⋅dm-3 and the nitrato-complexes show relatively strong adsorption on anion exchanger. On the other hand, the adsorbed Ce (IV) was reduced to non-adsorptive Ce (III) through redox reactions with anion exchanger and eluted into the solution, while the elution rate was significantly promoted by temperature. The distribution coefficient of Ce (IV) at 303K, 6 mol⋅dm-3 HNO3 solution onto AR-01 anion exchanger was as high as 100 dm3⋅kg-1. Ce was separated with high purity from a Ce (IV), La (III) and Nd (III) containing nitric acid solution by anion exchange column.

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Details 詳細情報について

  • CRID
    1390282679412219008
  • NII Article ID
    130004162235
  • DOI
    10.5182/jaie.13.2
  • COI
    1:CAS:528:DC%2BD38Xhsl2gu78%3D
  • ISSN
    18843360
    0915860X
    http://id.crossref.org/issn/0915860X
  • Text Lang
    ja
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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