U(Ⅵ)-U(Ⅳ)氧化还原排代色谱学的研究——(Ⅱ)阳交换床的全回流和交换平衡

STUDY OF U(Ⅵ)-U(Ⅳ) REDOX DISPLACEMENT CHROMATOGRAPHY (Ⅱ)TOTAL REFLUX AND CATIONIC EXCHANGE EQUILIBRIUM.

摘要: <正> 为解决U(Ⅵ)-U(Ⅳ)排代色谱中的多元交换平衡,本文提出了全回流解析法。其理论根据是:在稳定铀区段内,任一竞争离子必以一定的形式作全回流,否则区段不可能达到稳定。以阳床-Ti(Ⅲ)-FeCl_3-HX体系为研究对象,解析了铀区段内U(Ⅵ)、U(Ⅳ)、Fe(Ⅱ)、Ti(Ⅳ)及H~+的全回流,求得了它们各自的交换平衡分配式。

Abstract: A method of analysing total reflux state to study multicomponent equilibria problem associated with U(Ⅵ)-U(Ⅳ) redox displacement chromatography is suggested. The theoretical foundation of this method is that every counter ion must be in total reflux state in a special fashion in steady U-band. Behaviors of total reflux for 5 sorts of counter ions U(Ⅵ), U(Ⅳ), Ti(Ⅳ), Fe(Ⅱ) and H+, for the cationic bed-Ti(Ⅲ)-FeCl3-HCl system are analysed and five exchange equilibrium equations referred to every species are derived.