Decomposition of uranyl peroxo-carbonato complex ion in the presence of metal oxides in carbonate media

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作者
Dong-Yong Chung
Min-Sung Park
Keun-Young Lee
Eil-Hee Lee
Kwang-Wook Kim
Jei-Kwon Moon
机构
[1] Korea Atomic Energy Research Institute,Decontamination & Decommissioning Research Division
关键词
Decomposition; Hydrogen peroxide; Uranyl peroxo-carbonato complex; Metal oxide; Carbonate solution;
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摘要
Uranium oxide was dissolved in the form of the uranyl peroxo-carbonato complex ion, UO2(O2)(CO3)24− in carbonate solutions with hydrogen peroxide. When UO2(O2)(CO3)24− ions lose their peroxide component, they become a stable species of uranyl tricarbonato complex ion, UO2(O2)(CO3)24−. The uranyl peroxo-carbonato complex self-decomposed more rapidly into the uranyl tricarbonato complex ion in the presence of a metal oxide in the carbonate solution. In this study, decomposition of the uranyl peroxo-carbonato complex in a carbonate solution was investigated in the presence of several metal oxides using absorption spectroscopy.
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页码:761 / 768
页数:7
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