Redox Potential Evolution of Nitric Species and Plutonium in HNO3-HNO2 System

Autor:	Raphael Robin, Benoit Gwinner, Nathalie Larabi-Gruet, Pierre Didier Alain Fauvet, Emilie Buravand
Rok vydání:	2012
Předmět:	Aqueous solution 05 social sciences Inorganic chemistry PUREX 7. Clean energy Redox symbols.namesake chemistry.chemical_compound chemistry Nitric acid Standard electrode potential 0502 economics and business Oxidizing agent symbols Nernst equation 050207 economics Dissolution
Zdroj:	ECS Transactions. 41:57-66
ISSN:	1938-6737 1938-5862
DOI:	10.1149/1.3692524
Popis:	In France, the reprocessing process of spent fuel is carried out using the Purex process. The first chemical step of this process is the dissolution of the spent fuel in aqueous concentrated nitric acid. This dissolution solution is composed of many oxidizing species and it is necessary to understand the chemistry of these species to apprehend the behavior of structural materials. The redox potential is a useful discriminate variable to differentiate the effect of each species. In this framework, only the effect of NO{sub 3}{sup -}/HNO{sub 2} couple and PuO{sub 2}{sup 2+}/Pu{sup 4+} couple were investigated. These species were chosen because one is the main couple of medium and the other has a high standard potential. Their influence was investigated from the Nernst's equation. (authors)
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5c3d6c596c6d95b182a73e276428cfbc https://doi.org/10.1149/1.3692524 Zobrazit plný text záznamu