| abstract |
The invention relates to a catalytic system and its manufacturing process.n n n The catalytic system consists of a support on which the catalytically active product is deposited. The support has interesting mechanical or physical properties for the required operating conditions, but a mediocre specific surface. The catalytically active product, a metal carbide, is obtained by engobing the support in a suspension of a reducible metal compound in a solution of an organic compound, carbonizing this compound, reducing the metal compound and carburizing the metal. The carbide thus obtained has a high specific surface. Preferably, the support consists of silicon carbide prepared by carbonization of a paste containing silicon, carbon and an organic resin.n n n The invention applies to any form of catalyst, but in particular to monolithic catalysts intended for the treatment of exhaust gases. |