| Autor: |
Baoting Huang, Jin Wang, Dina Shpasser, Oz M. Gazit |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
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| Zdroj: |
Chemistry, Vol 5, Iss 2, Pp 1101-1112 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2624-8549 |
| DOI: |
10.3390/chemistry5020075 |
| Popis: |
The Mn-Na2WO4/SiO2 catalyst is regarded as the most promising catalyst for the oxidative coupling of methane (OCM). Despite its remarkable performance, the Mn-Na2WO4/SiO2 catalyst requires a high reaction temperature (>750 °C) to show significant activity, a temperature regime that simultaneously causes quick deactivation. In the current work, we show that the benefits of this catalyst can be leveraged even at lower reaction temperatures by a using a stacked catalyst bed, which includes also a small amount of 5% La2O3/MgO on-top- of the Mn-Na2WO4/SiO2 catalyst. The simple stacking of the two catalysts provides >7-fold higher activity and ~1.4-fold higher C2 yield at 705 °C compared to Mn-Na2WO4/SiO2 and La2O3/MgO, respectively. We specifically show that the enhanced OCM performance is associated with synergistic interactions between the two catalyst domains and study their origin. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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