1996
DOI: 10.1007/bf00354457
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Electron paramagnetic resonance spectra of CeO2 catalyst for CO oxidation

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Cited by 49 publications
(27 citation statements)
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“…These paramagnetic signals may be ascribed to Ce 3? ion in the bulk structure, with one unpaired electron in the 4f state [25], or to electrons trapped at oxygen vacancies of the ceria lattice [26]. These contributions would be supported by the fact that Ce 3?…”
Section: Epr Resultsmentioning
confidence: 94%
“…These paramagnetic signals may be ascribed to Ce 3? ion in the bulk structure, with one unpaired electron in the 4f state [25], or to electrons trapped at oxygen vacancies of the ceria lattice [26]. These contributions would be supported by the fact that Ce 3?…”
Section: Epr Resultsmentioning
confidence: 94%
“…In addition, the samples that contain CeO 2 typically show a sharp axial signal with g ⊥ = 1.965 and g = 1.940. These features have been previously related with either quasi-free electrons or with Ce 3+ cations located in distorted sites of the fluorite lattice [21][22][23][24]. A recent study has assigned this signal to Cr 3+ impurities of CeO 2 at the ppb level [25].…”
Section: Epr Study Of Oxygen Adsorptionmentioning
confidence: 89%
“…68 Electron in Oxygen Vacancies Close to Titanium Centers. An alternative assignment for the g = 1.96 signal in ZnO samples could be proposed by analogy with the assignment proposed for the similar signal (g = 1.96) observed in ceria, 69,70 which is also a oxygen deficient semiconductor. 70−74 Moreover, as in the case of ZnO, the signal is detected at relatively high temperature 70 and its width is small.…”
Section: However This V Omentioning
confidence: 97%