Mesoporous materials from zeolite seeds as supports for nickel tungsten sulfide active phases Part 1. Characterization and catalytic properties in hydrocracking reactions - Université Pierre et Marie Curie Accéder directement au contenu
Article Dans Une Revue Applied Catalysis A : General Année : 2005

Mesoporous materials from zeolite seeds as supports for nickel tungsten sulfide active phases Part 1. Characterization and catalytic properties in hydrocracking reactions

Résumé

MCM-41 aluminosilicate mesostructures (Si/Al = 18) with hexagonal long-range order were assembled from protozeolitic nanoclusters (zeolite seeds) that normally nucleate the crystn. of b-zeolite (BEA). Depending on the duration of the thermal treatment leading to the zeolite seeds, different acidic materials can be obtained. For short pre-treatment duration, the material presents the main characteristics of the MCM-41, whereas for longer pre-treatment duration, there is a gradual transition to a mostly zeolitic one. Hydrocracking of n-decane was carried out on catalysts composed of a sulfided nickel tungsten phase supported on various b-MCM-41 supports as well as on an amorphous silica-alumina and an AlSBA-15 material. The hydrocracking properties of the catalysts are related to the nature of the b-MCM-41 and vary from the comportment of silica-alumina materials to the one of a zeolite. The nickel-tungsten catalyst supported on b-MCM-6 (6 h pre-treatment for the zeolite seeds soln.) is more active and more selective toward isomerization than the catalyst supported on a com. silica-alumina support.

Domaines

Catalyse

Dates et versions

hal-00080297 , version 1 (15-06-2006)

Identifiants

Citer

Shuangqin Zeng, Juliette Blanchard, Michèle Breysse, Dadong Li, Hong Nie, et al.. Mesoporous materials from zeolite seeds as supports for nickel tungsten sulfide active phases Part 1. Characterization and catalytic properties in hydrocracking reactions. Applied Catalysis A : General, 2005, 294, pp.59-67. ⟨10.1016/j.apcata.2005.07.015⟩. ⟨hal-00080297⟩
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