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2005
Sorption
G 6000
26- 011
Mica Surfaces Stabilize Pentavalent Uranium. — High-resolution XPS results
demonstrate that reduction of aqueous U6+ at ferrous mica surfaces yields U 5+ as the
dominant sorbed species over a broad range of solution compositions. Polymerization
of sorbed U5+ with sorbed U6+ and U4+ is identified as a possible mechanism that prevents the rapid disproportionation of aqueous U5+ . The general nature of this mechanism suggests that U5+ could play an important, but previously unidentified, role in the
low-temperature chemistry of uranium in reducing, heterogeneous aqueous systems.
— (ILTON*, E. S.; HAIDUC, A.; CAHILL, C. L.; FELMY, A. R.; Inorg. Chem. 44
(2005) 9, 2986-2988; Pac. Northwest Natl. Lab., Chem. Sci. Div., Richland,
WA 99352, USA; Eng.) — Schramke
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