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化学学报
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化学学报 ›› 1992, Vol. 50 ›› Issue (9): 877-882. 上一篇    下一篇

研究论文

二-(2-乙基己基)磷酸在不同稀释剂中对钼(VI)的萃取

孙思修;高自立;刘源;沈静兰   

  1. 山东大学化学系
  • 发布日期:1992-09-15

Extraction equilibria of molybdenun (VI)from hydrochloric acid by di-(2-ethylhexyl)phosphate in various diluent solutions

SUN SIXIU;GAO ZILI;LIU YUAN;SHEN JINGLAN   

  • Published:1992-09-15

PDF

345

被引次数

10

考察了Mo(VI)在盐酸水相与-二(2-乙基己基)磷酸的不同稀释有机相间的分配平衡,观察到萃取平稀常数按正辛烷、四氯化碳、苯、氯信、1,2-二氯乙烷、甲苯、甲基异丁基酮的次序递减,萃合物的组成也按这一顺序呈现规律性变化.文中将这些结果与稀释剂性进行了关联,得到萃取平衡常数与稀释剂的极性参数E~T间良好的线性关系.此外,本文还提出了H~2MoO~4的酸、碱式解离常数分别为0.158和1.21×10^13.

关键词: 萃取, 钼, 平衡常数, 乙基己基磷酸, 稀释剂效应

The distribution equilibrium of Mo(VI) between HCl and various diluent solns. of di-(2-ethylhexyl)phosphate were investigated at 298 K. The extration equilibrium consts, decrease in order of octane, CCl4, benzene, chloroform, 1,2-dichloroethane, toluene and Me iso-Bu ketone. The effect of diluent polarity on the composition of extracted species were also observed

Key words: EXTRACTION, MOLYBDENUM, EQUILIBRIUM CONSTANT

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