Redox behavior of VO2+/VO2+ as a simulant of NpO2+/NpO22+ in boiling nitric acid solution

Satoshi Hasegawa, Seong Yun Kim, Tatsuya Ito, Tetsunari Ebina

Research output: Contribution to journalArticle

Abstract

To evaluate the redox behavior of VO2+/VO2+ as a simulant of NpO2+/NpO22+ in boiling nitric acid solution, i.e., typical operating conditions for nuclear fuel reprocessing plants, oxidation rate measurements for VO2+ in boiling and non-boiling nitric acid solutions, thermodynamic calculations, and kinetic calculations were performed. The results indicated that the apparent oxidation rate of VO2+ to VO2+ is accelerated by a decrease in NO2- and HNO2 concentrations owing to the boiling phenomena of nitric acid solution.

Original languageEnglish
Pages (from-to)1319-1328
Number of pages10
JournalJournal of Radioanalytical and Nuclear Chemistry
Volume317
Issue number3
DOIs
Publication statusPublished - 2018 Sep 1

Keywords

  • Boiling phenomena
  • Neptunium
  • Nitric acid
  • Redox reaction
  • Reprocessing
  • Vanadium

ASJC Scopus subject areas

  • Analytical Chemistry
  • Nuclear Energy and Engineering
  • Radiology Nuclear Medicine and imaging
  • Pollution
  • Spectroscopy
  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis

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