| Autor: |
Ruiyang Chen, Sha Peng, Zhiming Liu |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
|
| Zdroj: |
Chemical Physics Impact, Vol 6, Iss , Pp 100164- (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2667-0224 |
| DOI: |
10.1016/j.chphi.2023.100164 |
| Popis: |
A highly active low-temperature MnOx wrapped cubic CeO2 (Ce@Mn) catalyst has been developed for the selective catalytic reduction of NOx by NH3. This core-shell catalyst exhibited over 90% NOx conversion at 100–300 °C, and also displayed high tolerance to H2O and SO2, which outperformed CeMn particles prepared via the co-precipitation method. The improved performance of Ce@Mn catalyst can be related to the presence of more Ce3+ and oxygen vacancies, which generate more surface chemisorbed oxygen. In-situ DRIFTS revealed that the reduction of NOx over Ce@Mn catalyst proceeded via the Langmuir-Hinshelwood (L-H) mechanism. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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