Process for producing a highly porous catalyst layer...

B - Operations – Transporting – 01 – J

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B01J 37/02 (2006.01) B01J 23/89 (2006.01) B01J 37/34 (2006.01)

Patent

CA 2134435

A method is described for producing a catalyst layer consisting of a metal alloy with palladium or platinum as the primary metal and at least one other metal which has a melting point lower than that of the primary metal and which forms with the primary metal a homogeneous solid solution that is rich in the primary metal. In the method, a powder of the at least one other metal is applied first to a carrier body followed by application of a powder of the primary metal. The powders are successively applied to the carrier body in this order with at least the powder of the primary metal being sprayed on by thermal means.

Description d'une méthode de production d'une couche de catalyseur constituée d'un alliage de métal comportant du palladium ou du platine comme métal de base et d'au moins un autre métal qui a un point de fusion inférieur à celui du métal de base et qui forme avec ce dernier une solution homogène et solide riche en ce même métal. La méthode consiste à appliquer d'abord une poudre d'au moins un autre métal sur un support et d'appliquer ensuite la poudre du métal de base. Les poudres sont appliquées successivement sur le support dans cet ordre et, au moins la poudre du métal de base est projetée en utilisant des moyens thermiques.

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