Fischer-tropsch processes and catalysts using stabilized...

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B01J 31/00 (2006.01) B01J 21/00 (2006.01) B01J 21/06 (2006.01) B01J 21/12 (2006.01) B01J 23/00 (2006.01) B01J 23/40 (2006.01) B01J 23/58 (2006.01) B01J 23/74 (2006.01) B01J 23/89 (2006.01) B01J 37/02 (2006.01) C07C 27/00 (2006.01) C10G 2/00 (2006.01) B01J 21/04 (2006.01) B01J 32/00 (2006.01) B01J 35/10 (2006.01)

Patent

CA 2500646

A catalyst and method for producing hydrocarbons using a catalyst support having an improved hydrothermal stability, such as under Fischer-Tropsch synthesis conditions. The stabilized support is made by a method comprising treating a boehmite material in contact with at least one structural stabilizer. Contacting the boehmite with at least one structural stabilizer can include forming a mixture comprising the boehmite material and at the least one structural stabilizer. The mixture can be a sol or a slurry. The treating preferably includes drying or spray drying the mixture, and calcining in an oxidizing atmosphere to obtain the stabilized support. Preferred structural stabilizers can include an element, such as cobalt, magnesium, zirconium, boron, aluminum, barium, silicon, lanthanum, oxides thereof, or combinations thereof; or can include precipitated oxides, such as a co- precipitated silica-alumina.

L'invention concerne un catalyseur et un procédé de production d'hydrocarbures au moyen d'un support de catalyseur ayant une stabilité hydrothermique améliorée, comme c'est le cas dans des conditions de synthèse Fischer-Tropsch. Le support stabilisé est fabriqué par un procédé comprenant le traitement de la boehmite en contact avec au moins un stabilisateur de structure. Le contact de la boehmite avec un stabilisateur de structure peut comprendre la formation d'un mélange renfermant la boehmite et au moins le stabilisateur de structure. Le mélange peut être un sol ou une bouillie. Le traitement comprend de préférence un séchage ou un séchage par atomisation du mélange, suivi d'une calcination en atmosphère oxydante de manière à obtenir le support stabilisé. Des stabilisateurs de structure préférés peuvent comprendre un élément tel que cobalt, magnésium, zirconium, bore, aluminium, baryum, silicium, lanthane, des oxydes de ces éléments ou des combinaisons de ceux-ci, ou encore, des oxydes précipités tels que des oxydes d'aluminium-silicium co-précipités.

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