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化学学报
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化学学报 ›› 1998, Vol. 56 ›› Issue (9): 848-853. 上一篇    下一篇

研究论文

伯胺N~1~9~2~3萃取硫酸铀酰的机理研究

杨永会;薛淑云;孙思修;马建华;孙国新;包伯荣   

  1. 山东大学化学学院.济南(250100);青岛大学师范学院化学系;中国科学院上海 原子核研究所.上海(201800)
  • 发布日期:1998-09-15

The mechanism of extraction of uranium (ⅥI) from sulfuric acid solution by primary amine N~1~9~2~3

Yang Yonghui;Xue Shuyun;Sun Sixiu;Ma Jianhua;Sun Guoxin;Bao Borong   

  1. Shandong Univ., College of Chem.Jinan(250100);Inst Nucl Res., CAS. Shanghai(201800)
  • Published:1998-09-15

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研究了伯胺N~1~9~2~3的正庚烷溶液从硫酸介质中萃取硫酸铀酰的机理。认为伯胺N~1~9~2~3的硫酸盐在有机相中形成了反向胶束(或胶团),并由红外光谱和透射电镜佐证。伯胺N~1~9~2~3和铀酰形成的萃合物主要存在于反向胶束准相中。可以较好地解释用斜率法无法解释的实验事实。

关键词: 伯胺N1923, 铀酰化合物, 硫酸盐P, 萃取, 萃取机理, 胶束, 萃取平衡

The extraction mechanism of uranium (Ⅵ) from sulfuric acid media by primary amine N~1~9~2~3 is investigated. The suggestion that the ammonium salt forms the reversed micelle or microemulsion due to aggregation is proved by infrared spectra and TEM images. The extraction compound exists mainly in the reversed micelle pseudophase. This mechanism can be used for explicating the experimental results, which can not be explained by the conventional slope method.

Key words: PRIMARY AMINE N1923, URANYL COMPOUNDS, SULFATE P, EXTRACTION, EXTRACTION MECHANISM, MICELLE, EXTRACTION EQUILIBRIUM

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