Journal of the Korean Chemical Society (대한화학회지)

Korean Chemical Society (대한화학회)
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Nonmonotonic Ordering of Lanthanon Nitrates in the Phosphine Oxide Extraction Systems

稀土類元素의 溶媒抽出의 不均一性

  • Published : 19631200
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Abstract

The distribution ratio of lanthanon nitrates in the TBPO- and TOPO-toluene systems were studied radiometrically as a function of solvent, nitrate and atomic number(Z). The plots of log Kd vs. Z shows two straight lines which are crossing at Z = 63∼64. The solvent dependency was same for lighter and heavier lanthanons but nitrate dependency was different between the two parts.

TBPO-toluene 및 TOPO-toluene 系에 대한 4f 稀土類元素의 硝酸鹽의 溶媒濃度, 硝酸基濃度 및 原子番號(Z)의 變化에 따르는 分配率의 變化를 放射化學的으로 測定하였다. log Kd 對 Z의 關係는 Z=63∼64에서 交叉되는 二個의 直線으로 表示되면 溶媒濃度 依存度는 稀土類元素 全般에 걸쳐 一定하나 硝酸基濃度 依存度는 經稀土類元素와 重稀土類元素가 다르게 나타난다.

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References

  1. J. Inorg. Nucl. Chem. v.4 D.F. Peppard(et al.)
  2. J. Atomic Energy Soc. Japan v.4 T. Ishimori(et al.)
  3. J. Korean Chem. Soc. v.7 C.T.Rhee
  4. J. Am. Chem. Soc. v.75 F. H. Wheelwright(et al.)
  5. J. Am. Chem. Soc. v.76 S.G. Thompson(et al.)
  6. J. Am. Chem. Soc. v.72 G.T. Seaborg(et al.)
  7. Proceedings of the 2nd International Conference on Peaceful Uses of Atomic Energy v.28 G.N. Yakovlev(et al.)
  8. J.Am.Chem.Soc. v.76 G.T. Seaborg(et al.)
  9. J. Inorg. Nucl. Chem. v.9 E. Hesford(et al.)