Thermodynamic data for hydrous and anhydrous PuO2+x(s)

Corrosion of irradiated MOX fuel in presence of dissolved H2

“…The abundances in fuel given are based on the calculated (ORIGEN) number of moles of each element in relation to total number of moles of actinides and fission products. [49,50] NC, for the allowance to use the irradiated MOX fuel and for the complementary fuel data. Thanks are also due to P. Peerani for performing the ORIGEN calculations and J.-P. Glatz, V.V.…”

Literature Review of Puo2 Calcination Time and Temperature Data for Specific Surface Area

“…This reference 22 discusses the thermodynamic properties of hydrous and anhydrous PuO 2+x compounds. However, the article does not contain any specific surface area for PuO 2 that could be regressed.…”

Reaction of neptunium with molecular and atomic oxygen: Formation and stability of surface oxides

“…Np-4f 7 First, the metal contribution is isolated by subtracting a Np metal reference spectrum. Then the NpO 2 contribution is determined by subtracting a NpO 2 reference spectrum leaving the Np 2 O 3 spectrum.…”

“…The possible formation of higher actinide oxides out of the dioxides (UO 2 and PuO 2 or the mixed oxide matrices) directly influences the dissolution behaviour of the spent fuel, because the solubility of the actinide oxides increases drastically when the actinide has an oxidation state above +4 [2]. The claimed existence of PuO 2+x (s) [3,4] -after decades of believing in a very stable PuO 2 -and the controversial discussion following this surprising statement [5][6][7] unveiled the fact that especially for plutonium, as well as neptunium, the existing data set concerning their An-O phase diagrams is unsatisfactory [8].…”