An electron paramagnetic resonance study of impurities in ceria, CeO2
โ Scribed by M Figaj; K.D Becker
- Book ID
- 108409660
- Publisher
- Elsevier Science
- Year
- 2001
- Tongue
- English
- Weight
- 104 KB
- Volume
- 141-142
- Category
- Article
- ISSN
- 0167-2738
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๐ SIMILAR VOLUMES
The electron paramagnetic resonance (EPR) spectra of Pr 4; diluted in Sr 2 CeO 4 were measured at 4.2 K. A very large hyperfine interaction with the 141 Pr nucleus was observed. The spectra were anisotropic, due to the distortion of the octahedral oxygen coordination symmetry around the Pr 4ุ ion. T
The EPR spectra of freshly prepared CeO2 samples as well as of samples used as a catalyst in the oxidation of CO to CO2 are reported. Attribution of these patterns to oxygen species O~-, O2, O-, or to Ce 3+ ions is discussed and dynamic phenomena involving these species are described. Bottlenecked s
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