高等学校化学学报

高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (6): 832.

• 论文 • 上一篇    下一篇

铒在HBTMPTP-正庚烷/水溶液间的传质动力学

乐善堂, 马根祥, 李德谦, 苏锵   

  1. 中国科学院长春应用化学研究所稀土化学与物理开放实验室, 长春 130022
  • 收稿日期:1999-07-12 出版日期:2000-06-24 发布日期:2000-06-24
  • 通讯作者: 李德谦(1936年出生),男,研究员,博士生导师,从事湿法冶金研究.
  • 基金资助:

    国家重点基础研究发展规划项目(稀土功能材料的基础研究批准号:G1998061302);国家自然科学基金(批准号:29771028;298010

Mass Transfer of Er(Ⅲ) Between HBTMPTP Dissolved in n-Heptane and HAc-NaAc

YUE Shan-Tang, MA Gen-Xiang, LI De-Qian, SU Qiang   

  1. Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
  • Received:1999-07-12 Online:2000-06-24 Published:2000-06-24

PDF (PC)

被引次数

18

摘要： 在(30±0.5)℃下,用层流恒界面池研究了铒在HBTMPTP-正庚烷-0.2mol/L(H,Na)Ac萃取体系中的传质动力学.测定了该体系的界面张力,考察了水相酸度、萃取剂浓度、氯离子浓度、温度和比界面对萃取速率的影响.实验表明,在本实验条件下,萃取过程属于扩散控制过程.Cyanex302中的杂质具有动力学的协萃作用.

关键词: 萃取, 动力学, Er(Ⅲ), 二(2, 4, 4-三甲基戊基)单硫代膦酸, Cyanex 302

Abstract: The rate of extraction of Er(Ⅲ) from aqueous acetate solutions at 0.2 mol/Lionic strength by HBTMPTPin n heptane was studied by using a constant interfacial area cell with laminar flow at (30± 0.5) ℃. The interfacial activity of HBTMPTPwas investigated at n heptane/ 0.2 mol/L(H, Na)Ac (pH= 5.00 ) interface. The rate of Er(Ⅲ) extraction was measured aTdifferent chemical compositions by varying hydrogen ion, HBTMPTP, Cyanex 302 and chlorine ion concentrations. The effect of stirring speed, temperature and special interfacial area on the rate of extraction was also studied. The results showed that, under the conditions of the experiments, the overall rate is diffusion controlled. It was found that the impurities of Cyanex 302 have the effect of synergistic extraction.

Key words: Extraction, Kinetics, Er(Ⅲ), Bis(2,4,4-trimethylpentyl)monothiophosphinic acid, Cyanex302

中图分类号: 

TrendMD: