Speciation of residual carbon contained in UO{sub 2}

Journal Article · Thu Dec 15 00:00:00 EST 2016 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/J.JSSC.2016.09.003· OSTI ID:22658120

Ziouane, Yannis ^[1]; Arab-Chapelet, Bénédicte ^[2]; Tamain, Christelle ^[3]; Lalleman, Sophie ^[1]; Delahaye, Thibaud ^[2]; Leturcq, Gilles ^[1]

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1. CEA, Nuclear Energy Division, RadioChemistry & Processes Department, SERA, LED, Marcoule, bât 166. 30207, F-30207 Bagnols sur Cèze (France)
2. CEA, Nuclear Energy Division, RadioChemistry & Processes Department, SERA, LCAR, F-30207 Bagnols sur Cèze (France)
3. CEA, Nuclear Energy Division, RadioChemistry & Processes Department, SMCS, LILA, F-30207 Bagnols sur Cèze (France)

UO{sub 2} powders were synthesized thanks to oxalic precipitation (platelet morphology) and sol-gel route and completely characterized. A secondary phase was found depending on the calcination atmospheres. This phase has been identified by Raman spectroscopy as graphitic material (i.e. carbon-based secondary compound) and quantified by thermogravimetric analyses. Its amount varies with the calcination atmosphere. The presence of this secondary phase has no significant effect on the lattice parameter and its specific surface area. - Graphical abstract: Figure 2: Raman spectroscopy of the three UO{sub 2} powders and of the dissolution residues.

• OSTI ID: 22658120
• Journal Information: Journal of Solid State Chemistry, Vol. 244; Other Information: Copyright (c) 2016 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
36 MATERIALS SCIENCE
LATTICE PARAMETERS
RAMAN SPECTROSCOPY
RESIDUES
SOL-GEL PROCESS
SPECIFIC SURFACE AREA
SYNTHESIS
THERMAL GRAVIMETRIC ANALYSIS
URANIUM DIOXIDE