Formation of Uranium Fluoride Complex by Addition of Fluoride Ion to Molten NaCl-CsCl Melts

A. Uehara, O. Shirai, T. Fujii, T. Nagai, N. Sato, H. Yamana

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

The chemical properties and coordination circumstances of uranium complexes in NaCl-CsCl eutectic melts containing fluoride ion were investigated by both electrochemical and absorption spectrum measurements. Energy shifts in absorption peaks, which were caused by the formation of U4+ fluoride complex were observed when NaF was present in the melt. The formation of the fluoride complex of U3+ was not observed. When a cyclic voltammogram was measured after the addition of F-, the reduction potential of U4+ shifted negatively since the fluoride complex of U4+ was more stable than that of U3+ complex in the melt.

Original languageEnglish
Title of host publicationMolten Salts Chemistry and Technology
PublisherWiley-Blackwell
Pages421-426
Number of pages6
Volume9781118448731
ISBN (Electronic)9781118448847
ISBN (Print)9781118448731
DOIs
Publication statusPublished - 2014 Jun 23

Keywords

  • Cyclic voltammetry
  • NaCl-CsCl
  • UV-VIS-NIR absorption spectroscopy
  • Uranium fluoride complex

ASJC Scopus subject areas

  • Chemistry(all)

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