|
Scheda bibliografica proveniente da importazione di metadati da altro sistema |
| Tipo: |
Documento elettronico, Risorsa analitica |
| É capitolo di: |
Scientific Bases for the Preparation of Heterogeneous Catalysts, Proceedings of the 9th International Symposium Louvain-la-Neuve, Belgium 10-14 September 2006 |
| Titolo: |
Origin of the dispersion limit in the preparation of Ni(Co) Mo/Al2O3 and Ni(Co)Mo/TiO2 HDS oxidic precursors |
| Pubblicazione: |
Elsevier, ©2006 |
| Descrizione fisica: |
713-720 |
| Titolo uniforme: |
Scientific Bases for the Preparation of Heterogeneous Catalysts, Proceedings of the 9th International Symposium Louvain-la-Neuve, Belgium 10-14 September 2006 |
| Sommario o abstract: |
Conventional alumina and titania oxidic precursors have been characterized by Raman spectroscopy after maturation, drying and calcination. The evolution of the impregnating solution has been followed and the nature of the precipitates has been determined. After impregnation of alumina 6molybdoaluminate entities (well dispersed or not) are characterized for both the NiMo and CoMo based solids. At high Mo loading, the formation of a CoMo oxyhydroxide that yields bulk cobalt molybdate upon calcination is also observed. In counterpart on TiO2 surface of the NiMo precursor, the formation of 6molybdonickelate leading to bulk nickel molybdate upon calcination is observed. The formation of well defined phases i.e. CoMoO4 and NiMoO4 was not observed on respectively titania and alumina supports, but well dispersed polyoxomolybdate was characterized at the same Mo loading |
| Altre responsabilitą: |
Carole Lamonier
Deana Soogund
Jean Mazurelle
Pascal Blanchard
Denis Guillaume
 vedi tutte le altre responsabilitą |
| Lingua della pubblicazione: |
Inglese |
| Codice identificativo: |
IT/ItRC/00017086 |
| data di importazione: |
01-01-2014 |
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