Surface reactivity of uranium hexafluoride (UF6)

Publication date: August 2018Source: Comptes Rendus Chimie, Volume 21, Issue 8Author(s): Bertrand Morel, Ania Selmi, Laurent Moch, Jean-Michel Hiltbrunner, Mickael Achour, Rachid Benzouaa, Aurélien Bock, Laurent Jouffret, Pierre Bonnet, André Hamwi, Marc DuboisAbstractThe present article reviews a selection of results obtained in the AREVA/CNRS/UCA joint research laboratory. It focuses on interfaces formed by uranium hexafluoride (UF6) with chemical filter (purification), carbon (UF6 storage), and metallic substrate (corrosion). As a matter of fact, along the nuclear fuel cycle, metallic surfaces of the fluorination reactors, cooling systems (for the liquefaction of UF6), and storage containers are in contact with UF6, either in the gas or in the liquid phase. For the removal of volatile impurities before the enrichment, surface of chemical filters with a high specific surface area must be enhanced for both selectivity and efficiency. To store depleted UF6 (238U), graphite intercalation compounds are proposed and preliminary results are presented.RésuméCet article présente une sélection de résultats obtenus au laboratoire commun de recherche AREVA/CNRS/UCA « Chimie du fluor ». Il se focalise sur les différentes interfaces formées par l'hexafluorure d'uranium UF6 avec les filtres chimiques (purification), le graphite (stockage de UF6) et les substrats métalliques (corrosion). En effet, au cours du cycle du combustible nucléaire, les surfaces métalliques des réac...
Source: Comptes Rendus Chimie - Category: Chemistry Source Type: research