2013年8月
Reduction behavior of UO22+ in molten LiCl-RbCl and LiCl-KCl eutectics by using tungsten
JOURNAL OF NUCLEAR MATERIALS
- ,
- ,
- ,
- 巻
- 439
- 号
- 1-3
- 開始ページ
- 1
- 終了ページ
- 6
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.jnucmat.2013.03.078
- 出版者・発行元
- ELSEVIER SCIENCE BV
The reduction of uranium from UO22+ to UO2+ or U4+ in molten LiCl-RbCl and LiCl-KCl eutectics was examined by using tungsten and chlorine gas. Spectrophotometric technique was adopted to determine the concentration of uranium species. When tungsten was immersed into the LiCl-RbCl eutectic melt at 400 degrees C without supplying chlorine gas, 36% of the total weight of the hexavalent of UO22+ was reduced to the pentavalent of UO2+. Under purging chlorine gas into the melt, 96% of UO22+ was reduced to the tetravalent of U4+. Tungsten oxy-chloride of WOCl4 was produced via the reductions of UO22+, which was volatized from the melt and adsorbed on the upper part of experimental cell. On the other hand, 84% of UO22+ in the LiCl-KCl eutectic melt at 500 degrees C was reduced to U4+ by using tungsten and chlorine gas. (C) 2013 Elsevier B.V. All rights reserved.
- リンク情報
- ID情報
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- DOI : 10.1016/j.jnucmat.2013.03.078
- ISSN : 0022-3115
- Web of Science ID : WOS:000321080800001