Fcc catalyst, its preparation and use

Details Fcc catalyst, its preparation and use Fcc catalyst, its preparation and use

B - Operations, Transporting

01

J

B01J 37/00 (2006.01) B01J 21/04 (2006.01) B01J 21/16 (2006.01) B01J 29/04 (2006.01)

Patent

CA 2592022

Process for the preparation of a catalyst comprising the steps of (a) preparing a slurry comprising clay, zeolite, a sodium-free silica source, quasi-crystalline boehmite, and micro-crystalline boehmite, provided that the slurry does not comprise peptised quasi-crystalline boehmite, (b) adding a monovalent acid to the slurry, (c) adjusting the pH of the slurry to a value above 3, and (d) shaping the slurry to form particles. This process results in attrition resistant catalysts with a good accessibility.

La présente invention a trait à un procédé pour la préparation d'un catalyseur comprenant les étapes suivantes: (a) la préparation d'une suspension comportant de l'argile, de la zéolithe, une source de silice exempte de sodium, de la boehmite quasicristalline, et de la boehmite microcristalline, à condition que la suspension ne comporte pas de la boehmite quasicristalline peptisée, (b) l'ajout d'un acide monovalent à la suspension, (c) l'ajustement du pH de la suspension à un valeur supérieure à 3, et (d) le façonnage de la suspension pour former des particules. Ce procédé permet d'obtenir des catalyseurs résistants à l'attrition avec une bonne accessibilité.

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