海水中微量元素无机离子交换动力学研究 Ⅳ.海水中铀(Ⅵ)与水合氧化钛离子交换反应的级数和活化能的测定
A KINETIC STUDY OF THE INORGANIC ION EXCHANGE OF MINOR ELEMENTS IN SEAWATER Ⅳ. DETERMINATION OF THE ENERGY OF ACTIVATION AND ORDER OF REACTION OF THE ION EXCHANGE OF URANIUM (Ⅵ) WITH HYDROUS TITANIUM OXIDE IN SEAWATER
-
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).
-
张正斌、李子江,海洋学报.1 (1979), 1, 77-89. 张正斌、王强,海洋学报,1 (1979), 2, 227-242. 尾方异,日本海水学会志,24 (1971), 4, 149-153. 张正斌、袁汉祥,海洋与湖沼,11 (1980), 3, 220-228. Helfferich, F.,Ion Exchange, McGraw-Hill. Co. Inc. New York, 1962, 285. Heitner-Wirguim, C. and Albu-Yaron, A.,J. Appl. Chem.(London), 15 (1965), 446-448.
点击查看大图
计量
- 文章访问数: 799
- HTML全文浏览量: 12
- PDF下载量: 602
- 被引次数: 0