| Autor: |
S. J. Teichner, J. L. Gass, G. Pajonk, D. Bianchi |
| Rok vydání: |
1980 |
| Předmět: |
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| Zdroj: |
Journal of Vacuum Science and Technology. 17:104-107 |
| ISSN: |
0022-5355 |
| DOI: |
10.1116/1.570446 |
| Popis: |
The adsorption of 1‐butene has been studied gravimetrically on delta alumina which has been dehydroxylated at various temperatures, using a RH Cahn Electrobalance. For temperatures of dehydroxylation between 25° and 250°C delta alumina is inactive in the isomerization of 1‐butene. Simultaneously only reversibly adsorbed on OH groups species has been detected by IR analysis, resembling to 1‐butene. For higher temperatures of dehydroxylation the solid is active in isomerization and two new adsorbed species have appeared: one is reversibly adsorbed and the other is irreversibly adsorbed. The former has the structure of 1‐butene whereas the latter has lost all unsaturated character. Poisoning experiments performed with NH3 demonstrate that these two species are adsorbed on Al3+ ions and the second one also on O2− ions. The irreversibly adsorbed species is responsible for the deactivation of the catalyst. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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