Metal-doped mixed metal oxide, its preparation and use as...

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B01J 23/63 (2006.01) B01J 37/02 (2006.01) B01J 37/08 (2006.01) C10G 11/05 (2006.01)

Patent

CA 2610183

Mixed metal oxide composition comprising (i) at least two gel-forming metals in a total amount of 90-99.9 wt%, said metals being selected from the group consisting of Ti, Zr, Ce, La, Al, Cr, P, and Fe, and (ii) a metal dopant in an amount of 0.1-10 wt% which is selected from the group consisting of W, Pt, Pd, Rh, V, Mo, Co, Ni, Mn, and combinations thereof, all weight percentages calculated as oxides and based on the total weight of the composition, said composition being obtainable by (a) adding a base to an aqueous solution comprising water-soluble trivalent or tetravalent salts of said gel-forming metals, thereby forming a gel, (b) adding the metal dopant to the gel to obtain a doped gel, and (c) optionally calcining the doped gel. This composition is suitable for use in an FCC process as an additive or catalyst component.

La présente invention a trait à une composition d'oxyde métallique mélangé comportant (i) au moins deux métaux de formation de gel en une quantité totale de 90 à 99,9 % en poids, lesdits métaux étant choisis parmi le groupe constitué de Ti, Zr, Ce, La, Al, Cr, P, et Fe, et (ii) un dopant métallique en une quantité de 0,1 à 10 % en poids choisi parmi le groupe constitué de W, Pt, Pd, Rh, V, Mo, Co, Ni, Mn, et des combinaisons de ceux-ci, tous les pourcentages pondéraux étant calculés sous forme d'oxydes et par rapport au poids total de la composition. Ladite composition est susceptible d'être obtenue par (a) l'ajout d'une base à une solution aqueuse comprenant des sels hydrosolubles trivalents ou tétravalents desdits métaux de formation de gel, formant ainsi un gel, (b) l'ajout du métal dopant au gel pour obtenir un gel dopé, et (c) la calcination éventuelle du gel dopé. Cette composition est apte à être utilisée dans un procédé de craquage catalytique fluide sous la forme d'additif ou de constituant catalyseur.

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