| Autor: |
van Jhc Jan Hooff, van der Ajhp Arjan Pol, CR Cees Bayense |
| Přispěvatelé: |
Inorganic Materials & Catalysis, Chemical Engineering and Chemistry |
| Jazyk: |
angličtina |
| Rok vydání: |
1991 |
| Předmět: |
|
| Zdroj: |
Applied Catalysis, 72(1), 81-98. Elsevier |
| ISSN: |
0166-9834 |
| Popis: |
The results of propane aromatization over gallium containing HZSM-5 zeolites are described. Highly dispersed gallium in the zeolite (framework or extra-framework) was found to possess dehydrogenation activity, especially in the presence of strong Brønsted acid sites. The extra-framework gallium was introduced by mildly steaming a H-(Ga) ZSM-5 zeolite or by physically mixing Ga2O3 or a GAPSO-11 molecular sieve with H-(Al) ZSM-5. The higher dehydrogenation rates in the presence of gallium facilitated the formation of carbonaceous products, resulting in higher deactivation rates. A mechanism for hydrogen formation is discussed. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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