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考察了Mo(VI)在盐酸水相与二-(2-乙基己基)磷酸的不同稀释剂有机相间的分配平衡,观察到萃取平衡常数按正辛烷、四氯化碳、苯、氯仿、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极性进行了关联,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).
The partitioning equilibrium between Mo (VI) and organic phase of di- (2-ethylhexyl) phosphoric acid in different diluents was investigated. The equilibrium constant of extraction was observed as n-octane, carbon tetrachloride, benzene, 1,2-dichloroethane, toluene, methyl isobutyl ketone decreased in order, the composition of the extract showed regular changes in this order.In this paper, these results were correlated with the polarity of the diluent to give The linear relationship between extraction equilibrium constant and diluent polarity parameter E_T was also obtained.In addition, the acid and basic dissociation constants of H_2MoO_4 were also proposed to be 0.158 and 1.21 × 10 (-13) respectively.