| Autor: |
WANG Yang, YANG Chang-ju, WEN Yu-jie, CHEN Jun-chao, DU Jia-huan, PENG Lu-ming |
| Jazyk: |
čínština |
| Rok vydání: |
2020 |
| Předmět: |
|
| Zdroj: |
Chinese Journal of Magnetic Resonance, Vol 37, Iss 01, Pp 52-60 (2020) |
| Druh dokumentu: |
article |
| ISSN: |
1000-4556 |
| DOI: |
10.11938/cjmr20192765 |
| Popis: |
With Ni/CeO2 as an example, which has important applications in catalysis, 17O solid-state nuclear magnetic resonance (NMR) spectroscopy was applied to explore and analyze the concentration of surface Ni ions, according to the changes in the 17O NMR intensity of surface oxygen ions. The results indicate that the Ni concentrations in the first and second top metal ion layers in 10% NiCe-500 and 20% NiCe-300 are within the ranges of 9%~17% and 8%~15%, respectively. This approach may be extended to study the concentration of the doped paramagnetic elements in the surface for a variety of doped oxide materials. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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