中华医学超声杂志

应用化学 ›› 1988, Vol. 0 ›› Issue (6): 79-81.

• 研究简报 • 上一篇    下一篇

α-氯代脂肪酸对某些稀土的萃取研究

成本诚, 夏鹏飞, 欧阳晖   

  1. 中南工业大学化学系, 长沙
  • 收稿日期:1988-01-18 修回日期:1988-05-26 出版日期:1988-12-10 发布日期:1988-12-10

EXTRACTION OF SOME RARE EARTHS BY α-CHLOROALIPHATIC ACIDS

Cheng Bencheng, Xia Pengfei, Ouyang Hui   

  1. Department of Chemistry, Central South University of Technology, Changsha
  • Received:1988-01-18 Revised:1988-05-26 Published:1988-12-10 Online:1988-12-10

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摘要： Гавриловаа等[1]曾报导用α-溴代己酸的氯仿溶液对钐、钕、钆和镥的萃取,其萃取曲线与无取代基的比较向酸性区移动了约1个pH单位。Preston报导了α-溴癸酸的二甲苯溶液对一系列金属离子的萃取,认为所试验的8个稀土金属与α-溴癸酸形成了不溶性的金属络合物[2]。

关键词: α-氯代脂肪酸, 稀土, 萃取

Abstract: The extraction of rare earths (La3+,Nd3+,Sm3+ and Y3+) by α-chloroaliphatic acids (C6, C8, C10, C12) has been studied. The same extraction order was found for all four acids: Sm3+>Nd3+>La3+>Y3+. The extraction curves of α-chloroaliphatic acids shifted to about 1pH Unit lower as compared to the non-substituted one. Therefore hydrolysis and emulsification can be avoided. Y3+ can be separated from other rare earths when pH is low. Both the extraction rower and separation factor (βLa/y) increased with the increase of the number of carbon in α-chloroaliphatic acids.

Key words: α-Chloroaliphatic acids, Rare earths, Extraction

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