On the catalytic effect of Pd(s) on the reduction of UO22+ with H-2 in aqueous solution
2008 (English)In: Journal of Nuclear Materials, ISSN 0022-3115, E-ISSN 1873-4820, Vol. 374, no 1-2, 290-292 p.Article in journal (Refereed) Published
The catalytic effect of Pd(s) (as a model for noble metal particles) on the reduction of UO22+ by H-2 has been studied experimentally. The experiments were performed in aqueous solution in an autoclave. The aqueous solutions were pressurized with H-2 or N-2 and the UO22+ concentration was measured as a function of time. The experiments clearly show that Pd catalyzes the reaction between UO22+ and H-2. The rate constant of the reaction was found to be close to diffusion controlled and independent of the H-2 pressure in the range 1.5-40 bar. The effect of a catalyzed reduction of U(VI) to U(IV) in the solid phase is also discussed.
Place, publisher, year, edition, pages
2008. Vol. 374, no 1-2, 290-292 p.
OXIDATION; URANIUM; FUEL
IdentifiersURN: urn:nbn:se:kth:diva-8389DOI: 10.1016/j.jnucmat.2007.08.010ISI: 000254413900035ScopusID: 2-s2.0-38749145101OAI: oai:DiVA.org:kth-8389DiVA: diva2:13696
QC 201006212008-05-082008-05-082012-05-30Bibliographically approved