应用化学 ›› 1991, Vol. 0 ›› Issue (3): 73-76.

• 研究简报 • 上一篇    下一篇

伯胺N1923从硫酸介质中萃取La(Ⅲ)和Fe(Ⅲ)的动力学

孙都成, 李德谦   

  1. 中国科学院长春应用化学研究所, 长春 130022
  • 收稿日期:1990-04-28 修回日期:1990-07-06 出版日期:1991-06-10 发布日期:1991-06-10

THE EXTRACTION KINETICS OF LANTHANUM(Ⅲ) AND IRON(Ⅲ)SULFATE WITH PRIMARY AMINE N1923

Sun Ducheng, Li Deqian   

  1. Changchun Institute of Applied Chemistry, Academia Sinica, Changchun 130022
  • Received:1990-04-28 Revised:1990-07-06 Published:1991-06-10 Online:1991-06-10

摘要: 伯胺N1923(以下简称RNH2)是分离钍和稀土的有效萃取剂[1]。N1923对铁(Ⅲ)和稀土(Ⅲ)萃取热力学的研究[2,3]表明,在硫酸体系中加入PO43-,可使稀土(Ⅲ)和铁(Ⅲ)的分离系数增大,本文研究了N1923从硫酸介质中萃取稀土(Ⅲ)和铁(Ⅲ)的动力学性质,以推动N1923在稀土工业中的应用。

关键词: 伯胺, 镧, 铁, 萃取动力学

Abstract: The extraction kinetics of lanthanum (Ⅲ) and iron (Ⅲ) sulfate with N1923-n-heptanesolution has been studied by growing drop method at 25℃.The rate-determining steps inthis extraction process may be the following interfacial reactions for La(Ⅲ): .

Key words: primary amine, lathanum, iron, extraction kinetics