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酰胺荚醚对Am(Ⅲ)和Eu(Ⅲ)的萃取行为研究 Ⅰ.萃取机理研究

酰胺荚醚对Am(Ⅲ)和Eu(Ⅲ)的萃取行为研究 Ⅰ.萃取机理研究[J]. 核化学与放射化学, 2000, 22(2): 65-65.
引用本文: 酰胺荚醚对Am(Ⅲ)和Eu(Ⅲ)的萃取行为研究 Ⅰ.萃取机理研究[J]. 核化学与放射化学, 2000, 22(2): 65-65.
STUDY ON THE EXTRACTION OF Am(Ⅲ) AND Eu(Ⅲ) WITH AMIDO PODAND Ⅰ.STUDY ON EXTRACTION MECHANISM[J]. Journal of Nuclear and Radiochemistry, 2000, 22(2): 65-65.
Citation: STUDY ON THE EXTRACTION OF Am(Ⅲ) AND Eu(Ⅲ) WITH AMIDO PODAND Ⅰ.STUDY ON EXTRACTION MECHANISM[J]. Journal of Nuclear and Radiochemistry, 2000, 22(2): 65-65.

酰胺荚醚对Am(Ⅲ)和Eu(Ⅲ)的萃取行为研究 Ⅰ.萃取机理研究

详细信息
  • 中图分类号: O632.32;;O652.62

STUDY ON THE EXTRACTION OF Am(Ⅲ) AND Eu(Ⅲ) WITH AMIDO PODAND Ⅰ.STUDY ON EXTRACTION MECHANISM

  • 摘要: 以 40 %辛醇 煤油为稀释剂 ,研究了三种荚醚 :N ,N ,N’ ,N’ 四丁基 3 氧 戊二酰胺(TBOPDA)、N ,N ,N’ ,N’ 四异丁基 3 氧 戊二酰胺 (TiBOPDA)和N ,N ,N’ ,N’ 四丁基 3,6 二氧 辛二酰胺 (TBDOODA)在硝酸介质中对Am(Ⅲ )和Eu(Ⅲ )的萃取行为 ,确定了萃合物的组成和萃取反应方程式。通过测量萃取金属离子后有机相的电离度可知 ,荚醚与镅和铕没有生成离子型萃合物 ,从而间接证明荚醚对镅或铕的萃取是中性配合萃取。有机相反萃实验表明 :用稀硝酸或水反萃 3次 ,可以定量反萃镅和铕。
    Abstract: By using n octanol(40%) kerosen as diluent, the extraction behavior of Am(Ⅲ) and Eu(Ⅲ) from nitric acid solution is studied with N,N,N’,N’ tetrabuty1 3 oxa pentanediamide(TBOPDA),N,N,N’,N’ tetraisobuty1 3 oxa pentanediamide(T i BOPDA) and N,N,N’,N’ tetrabuty1 3,6 dioxa octanediamide(TBDOODA). The distribution ratios of Am and Eu increase rapidly with HNO 3 conentration in the range of c (HNO 3)<3.0 mol/L,then increase slowly. The composition of the extraction complexes and the extraction mechanism are examined. The extraction equlibrium is expressed. It is elucidated indirectly that the extraction is neutral complexation by measuring the electroconductivity of organic phase loaded with metal ion. Am(Ⅲ) and Eu(Ⅲ) in organic phase can be stripped by dilute nitric acid or by water.
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出版历程
  • 收稿日期:  2000-02-21
  • 刊出日期:  2000-05-19

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