Oxidation state of uranium: an XPS study of alkali and alkaline earth uranates
1998; Elsevier BV; Volume: 255; Issue: 1 Linguagem: Inglês
10.1016/s0022-3115(98)00012-9
ISSN1873-4820
AutoresSantanu Bera, S.K. Sali, Srinivasan Sampath, S.V. Narasimhan, V. Venugopal,
Tópico(s)Nuclear reactor physics and engineering
ResumoX-ray photoelectron spectroscopy (XPS) studies are performed on some mixed oxides of uranium with alkali and alkaline earth metals (Na, Li, Rb, Tl, Sr, Ba) to investigate the presence of multiple valence states of uranium in these compounds. Photoelectron peak positions, peak widths and satellite positions were measured to identify the chemical states. The analysis of the shake up satellites and the deconvolution of the principal peaks are used to quantify the chemical states. The domination of U(V) chemical state is inferred in Na2U3O9 and Sr2U3O10.
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