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本文研究了二-(2-乙基已基)磷酸(HDEHP)的己烷、四氯化碳、氯仿、二异丙基酮及甲基异丁酮溶液与高氯酸鈾酰的某些反应。在鈾酰浓度为5×10~(-4)M范围內的实驗数据表明,已烷、四氯化碳、氯仿溶液中每个鈾酰离子与二个HDEHP二聚分子(H_2A_2)結合,生成UO_2A_2(HA)_2絡合物,萃取反应方程式如下:在25±1℃下測得平衡常数。在甲异丁酮中,萃取依下列反应进行:測得平衡常数。二异丙基酮与甲异丁酮的性貭极相类似。固定HDEHP在溶液中的浓度,增加鈾酰的浓度吋,趋近极限值0.5,这表明生成了1∶2的絡合物。本工作还研究了酮类稀释剂对萃取络合物組成的影响。
In this paper, some reactions of di- (2-ethylhexyl) phosphoric acid (HDEHP) in hexane, carbon tetrachloride, chloroform, diisopropyl ketone and methyl isobutyl ketone with uranyl perchlorate . The experimental data in the range of uranyl concentration of 5 × 10 ~ (-4) M indicate that each uranyl ion in the hexane, carbon tetrachloride and chloroform solutions combined with two HDEHP dimers (H_2A_2) to form UA_2A_2 (HA) _2 complex, the extraction reaction equation is as follows: The equilibrium constant was measured at 25 ± 1 ℃. In isobutyl ketone, the extraction is carried out by the following reaction: The equilibrium constant is measured. Diisopropyl ketone and methyl isobutyl ketone sex very similar. The concentration of immobilized HDEHP in solution, increasing the concentration of uranyl, approached the limit of 0.5, indicating that a 1: 2 complex was formed. This work also investigated the effect of ketone diluents on the composition of the extraction complex.