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| catalyst | O (at %) | Ru (at %) | Ce (at %) | Ru/Ce | Ru4+/Ru0a |
|---|---|---|---|---|---|
| Ru/SiO2 | 50.53 | 0.37 | |||
| Ru/CePrO | 13.01 | 24.31 | 9.82 | 2.5 | 5.5 |
| Ru/CeLaO | 22.70 | 7.97 | 7.78 | 1.0 | 15.6 |
| Ru/HEO | 26.58 | 3.48 | 0.9 | 3.9 | 6.2 |
Values were estimated by XPS peak fitting using CasaXPS software.
