中华医学超声杂志

应用化学 ›› 1984, Vol. 0 ›› Issue (4): 60-67.

• 研究论文 • 上一篇    下一篇

溶剂萃取过程动力学研究Ⅰ.HEH(EHP)从硫酸盐溶液中萃取Cr(Ⅲ)的过程

沈静兰, 奚正楷, 高自立, 孙思修, 李凤华, 刘继明   

  1. 山东大学化学系
  • 收稿日期:1984-04-14 修回日期:1984-06-12 出版日期:1984-12-10 发布日期:1984-12-10
  • 基金资助:
    中国科学院科学基金

KINETICS OF SOLVENT EXTRACTION PROCESS Ⅰ.EXTRACTION OF CHROMIUM(Ⅲ)WITH HEH(EHP)FROM SULFATE SOLUTION

Shen Jinglan, Xi Zhengkai, Gao Zili, Sun Sixiou, Li Fenghua, Liu Jiming   

  1. Department of Chemistry, Shandong University, Jinan
  • Received:1984-04-14 Revised:1984-06-12 Published:1984-12-10 Online:1984-12-10

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摘要： 本文以煤油为稀释剂,研究HEH(EHP)从硫酸盐水溶液中萃取Cr(Ⅲ)的动力学过程。考察了铬离子浓度、萃取剂浓度、酸度、硫酸根浓度对萃取速率的影响。推断该过程的主要历程为: 结合水解、络合等步骤,并考虑到检测结果是萃余水相铬离子的总浓度,即 [Cr(Ⅲ)]=[Cr3+]+[(Cr(OH)2+]+[Cr(OH)2+]+[CrSO4+]采用稳态法导出其速率方程为:

Abstract: Kinetics of the extraction of chromium(Ⅲ)with HEH(EHP) in kerosene solution from aqueous sulfate solution has been studied. To interpret the experimental results of the influence of the concentration of chromium(Ⅲ),extractant,hydrogen ion and sulfate radical on the rate of extraction, a mechanism for the extraction is proposed For Cr(Ⅲ)exists in various forms in aqueous solution [Cr(Ⅲ)]total=[Cr+3]+[Cr(OH)2+]+[Cr(OH)2+]+[CrSO4+]the rate of the extraction can be expressed as follows

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