| Autor: |
T. Decamp, P. Engelhard, M. Cattenot, Christian Gachet, M. Breysse, Hervé Toulhoat, R. Frety, Mahjoub Lakhdar, Daniel Cornet, Saïd Housni, L. de Mourgues, C. Gueguen, M.J. Tilliette, J.L. Portefaix, M. Lacroix, J.C. Duchet, J. Bachelier, Michel Vrinat |
| Rok vydání: |
1988 |
| Předmět: |
|
| Zdroj: |
Catalysis Today. 4:7-22 |
| ISSN: |
0920-5861 |
| Popis: |
Alumina supported Ni-W catalysts with contents of components varying over a wide range were systematically studied in order to optimize a catalyst for further industrial use, mainly for HDN reactions. The catalytic activities were determined in different reactions representative of the hydrotreatment process, viz., piperidine HDN, biphenyl and pyridine hydrogenations, thiophene and dibenzothiphene HDS. The promoting effect of Ni is always observed but the amplitude of the synergy is greatly dependent on the type of molecule to be treated. The nature of the active sites responsible for the catalytic activities is discussed in terms of the mixed phase model. The selected most active catalyst for performing HDN reactions was tested in real feedstock conversions and compared with conventional nickel-tungsten catalysts. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
