【摘要】 本文为浓缩铀同位素的U(Ⅳ)-U(Ⅵ)阳交换排代法提出了一种络合排代剂选择理论,其要点为:为获得满意的单级分离系数和较高的铀装载率,选用的络合排代剂应使系统中有关离子对交换剂的亲合力次序为:U(Ⅵ)>>U(Ⅳ),Ti(Ⅲ)>>Ti(Ⅳ)。关键在于找到某种对U(Ⅵ)和Ti(Ⅲ)有足够专属性,且生成的配合物对交换剂的亲力极低的配位基。更多还原

【Abstract】 The paper presents a selection theroy of complexing displacer in the U (Ⅵ)-U(Ⅳ) redox cationic displacement process for enrichment of uranium isotopes. The principalo point of the theroy is that the comp-exing agent selected should adjust the order of affinity to the exchanger of ions concerned as:U(Ⅳ)》U(Ⅵ), Ti(Ⅲ)》Ti(Ⅳ), in order to reach a higher istopic separation factor in a single stage and a higher uranium loading capacity.The key point is to find a certain ligand which possesses ansufficient specificity to U(Ⅵ) and Ti(Ⅳ),and also produces a coordination compound with low affinity to exchanger.Remark: This project is supported by The Fund of Academy of Science, P.R.C.更多还原