钚
化学
氧气
锕系元素
氧化态
放射化学
波动性(金融)
无机化学
化学状态
X射线光电子能谱
金属
化学工程
有机化学
金融经济学
经济
工程类
作者
S. Hübener,Steffen Taut,A. Vahle,Gert Bernhard,Thomas Fanghänel
出处
期刊:Radiochimica Acta
[Oldenbourg Wissenschaftsverlag]
日期:2008-12-01
卷期号:96 (12): 781-785
被引量:11
标识
DOI:10.1524/ract.2008.1522
摘要
Abstract Trace amounts of oxidic plutonium species were studied by thermochromatography in silica glass columns in comparison to oxidic species of Th, Pa, U, Np, and Am. Humid oxygen was used as reactive admixture to the carrier gas helium. The thermochromatographic behavior of plutonium provides evidence for the oxidation of Pu(IV) to Pu(VI) with humid oxygen. The gas chromatographic transport of U, Np, and Pu is governed by the surface reaction MO 2 (OH) 2(g) ↔MO 3(ads) +H 2 O (g) , with M=U, Np, and Pu in the hexavalent state and competitive reactions of the actinide oxides with silica to nonvolatile compounds or solid solutions. There is good agreement with earlier volatility studies and the reported oxidation of PuO 2 with water. The oxidation to PuO 4 as claimed by Domanov [1] could not be confirmed.
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