中华医学超声杂志

应用化学 ›› 1986, Vol. 0 ›› Issue (3): 61-66.

• 研究论文 • 上一篇    下一篇

溶剂萃取过程动力学研究—Ⅴ.单液滴法研究HDEHP萃取Co(Ⅱ)的速率与机理

盖会法, 孙思修, 高自立, 沈静兰   

  1. 山东大学化学系
  • 收稿日期:1985-03-12 修回日期:1985-08-24 出版日期:1986-06-10 发布日期:1986-06-10
  • 基金资助:
    中国科学院科学基金

STUDIES ON THE EXTRACTION KINETICS Ⅴ.EXTRACTION OF COBALT(Ⅱ)WITH HDEHP BY SINGLE DROP METHOD

Gai Huifa, Sun Sixiu, Gao Zili, Shen Jinglan   

  1. Department of Chemistry, Shangdong University, Jinan
  • Received:1985-03-12 Revised:1985-08-24 Published:1986-06-10 Online:1986-06-10

PDF

527

被引次数

21

摘要： 本文用单液滴法考察了Co(Ⅱ)浓度、pH、萃取剂浓度以及温度和介质对HDEHP萃取Co(Ⅱ)速率的影响。实验结果表明,萃取反应机理为两步界面连续反应。文中对应用动力学因素提高Co(Ⅱ)、Ni(Ⅱ)的分离效率也作了简要的讨论。

Abstract: The kinetics and mechanism of the extraction of Co(Ⅱ) from sulphate solution with HDEHP in kerosene were studied by means of single drop method at 25℃, The experi-mental results indicate that the extraction process is controlled by the following interface reactions:Co+++2HA(i)=CoA2(i)+2H+ CoA2(i)+2H2A2(o)=CoA2•2HA(o)+2HA(i)where (O) and (i) represent organic phase and interface respectively. The influences of sulphate, chloride and nitrate concentration on the extraction rate were also discussed.

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