| Autor: |
Stefan Neuberg, Helmut Pennemann, Vetrivel Shanmugam, Ralf Zapf, Gunther Kolb |
| Jazyk: |
angličtina |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
Catalysis Communications, Vol 149, Iss , Pp 106202- (2021) |
| Druh dokumentu: |
article |
| ISSN: |
1873-3905 |
| DOI: |
10.1016/j.catcom.2020.106202 |
| Popis: |
For the combustion of methane, a partial replacement of platinum by rhodium leads to a significantly improved light-off behavior of the corresponding mixed Pt-Rh/γ-Al2O3 catalysts compared to a catalyst containing only Pt supported on γ-Al2O3. For all Pt-Rh/γ-Al2O3 catalysts, mixed PtRh crystals of low particle size were found. At 600 °C, the stability of catalysts, was found to increase with increasing rhodium content. The crystal size was determined by HR-TEM for spent catalyst samples after 40 h stability test. The samples containing higher amounts of rhodium showed smaller crystal size suggesting this as the origin of the increased catalyst stability. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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