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化学学报
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化学学报 ›› 1981, Vol. 39 ›› Issue (3): 269-271. 上一篇    下一篇

研究简报

二(2-乙基己基)磷酸与二(1-甲基庚基)磷酸对稀土元素萃取性能的比较

杨燕生, 朱家芹, 李源英   

  1. 中山大学化学系, 广州
  • 投稿日期:1979-02-27 发布日期:2013-06-03

COMPARISON OF THE SOLVENT EXTRACTION PROPERTIES OF DI (2-ETHYLHEXYL) PHOSPHATE AND DI (1-METHYLHEPTYL) PHOSPHATE FOR RARE EARTH ELEMENTS

YANG YAN-SHENG, ZHU JIA-QIN, LI YUAN-YING   

  1. Department of Chemitry, Zhong-Shan University, Guangzhou
  • Received:1979-02-27 Published:2013-06-03

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二(2-乙基己基)磷酸对轻稀土元素及钐-钕、铽-钆的萃取分离系数较大,是稀土萃取工艺中较普遍应用的一种酸性磷型萃取剂,但是它对中稀土(铕-钐,钆-铕)及重稀土(钇-钬、铒-钇)的萃取分离系数则不够大,而且具有萃取容量小、易乳化等缺点,因此寻找高选择性、高容量的新型萃取剂是稀土萃取化学研究的一项重要任务.

It has been found that the following differences exist between the two extractants, namely: 1. The separation factors for every two adjacent rare earth elements (β+1) with P-215 as egtractant are always larger than the corresponding values with P-204. As the acidity of the aqueous solution is changed, βzz+1 (p-215) varies, while βzz+1 (p-204) does not.