Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1227934 | Microchemical Journal | 2010 | 4 Pages |
Abstract
We have measured the electronic absorption spectra of the U(III) ion in LiCl–KCl eutectic melt at 450 °C to understand its chemical behavior in the context of pyrochemical process of spent nuclear fuel. The UV–VIS spectra of the U(III) ion consist of two main peaks in the range of 400–600 nm which are attributable to the 5f3–5f26d1 transitions. With the aid of UV–VIS spectroscopic tool, in-situ measurement of chemical reactions of the U(III) with oxide ion as well as neodymium oxide was successfully achieved. The U(III) ion forms insoluble uranium oxide phases by reacting with oxide ion and lanthanide oxides.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Young Hwan Cho, Tack-Jin Kim, Sang Eun Bae, Yong Joon Park, Hong Joo Ahn, Kyuseok Song,