Copper-containing materials

Details Copper-containing materials Copper-containing materials

B - Operations, Transporting

01

J

B01J 23/72 (2006.01) B01J 20/08 (2006.01) B01J 20/32 (2006.01) B01J 37/02 (2006.01)

Patent

CA 2320035

Copper/alumina compositions for uses as e.g. catalysts are made by impregnating a porous transition alumina support with an aqueous solution of a copper ammine carbonate complex, draining off any excess of the impregnating solution, and then heating the impregnated support to a temperature above 80° C to decompose the complex thereby depositing a basic copper carbonate compound on the surfaces of the pores of the transition alumina support. After reduction, the composition have a high copper surface area, expressed per unit weight of copper in the composition.

Selon cette invention, on fabrique des compositions à base de cuivre / d'alumine, utilisées par exemple comme catalyseurs, par l'imprégnation d'un support poreux de transition en alumine avec une solution aqueuse d'un complexe de carbonate d'ammine de cuivre; on élimine ensuite toute solution d'imprégnation en excès et l'on réchauffe le support imprégné à une température de plus de 80 DEG C pour décomposer le complexe. Ainsi, on dépose un composé basique de carbonate de cuivre à la surface des pores du support de transition en alumine. Après réduction, les compositions possèdent une importante surface en cuivre, exprimée en poids unitaire du cuivre dans la composition.

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