摘要:
关于海水中铀(Ⅵ)与水合氧化钛的作用、国内外已有许多报导,内容包括水合氧化钛制备方法的不同对交换铀量的影响,水合氧化钛和海水中铀的基本物理—化学性质的研究及它们在反应过程中物理—化学性质变化规律的研究,海水中铀与水合氧化钛作用机理的研究等等。但对这一反应的动力学研究文献上报导极少,除了在本研究Ⅰ、Ⅱ和Ⅲ中报导的反应机理的研究[1,2]证明反应过程的速率由液膜扩散所控制之外,关于这一离子交换过程的反应级数和活化能的研究却至今未见有文献报导。
Abstract:
This article deals with the determination of the order of reaction of the ion exchange of uranium(VI)with hydrous titanium oxide in seawater by means of differentiation.We designed flowing concentrated seawater with a variety of Uranium concentrations (CR),and obtained the "Uranium extract-Time" Curve, obtained the tangent at t=0, found the slope, which is the rate of ion exchange (d CP/dt)t-v (for simplification, foot sign t=0 is omitted hereinafter),as shown in figures 1 to 6, Various concentrations of uranium CR correspond to various values of (d CP/dt).
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