Catalytic system particularly for the postcombustion of exhaust

Details Catalytic system particularly for the postcombustion of exhaust Catalytic system particularly for the postcombustion of exhaust

1992-04-24

1993-03-23

Konopka, Paul E.

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Inorganic carbon containing

4232132, 4232135, 423439, 423440, 501 87, 501 91, 501 92, 502177, 502179, 502527, B01J 27224, B01J 2722, C04B 3552, C01B 3136

Patent

active

051963892

ABSTRACT:
The invention relates to a catalytic system and to a method of producing such a system.
The catalytic system consists of a support on which the catalytically active product is deposited. The support has mechanical or physical properties which are of interest in terms of the required working conditions, but a poor specific surface area. The catalytically active product, a metallic carbide, is obtained by coating the support in a suspension of a reducible compound of the metal in a solution of an organic compound, carbonizing this compound, reducing the metallic compound and carburizing the metal. The carbide thus obtained has a high specific surface area.
Preferably, the support consists of silicon carbide produced by carbonizing a paste containing silicon, carbon and an organic resin.
The invention is applicable to any form of catalyst but in particular to the monolithic catalysts intended for treating exhaust gases.

REFERENCES:
patent: 3189472 (1965-06-01), Taylor
patent: 4073866 (1978-02-01), Yamaki et al.
patent: 4536358 (1985-08-01), Welsh et al.
patent: 4812434 (1989-03-01), Pohlmann et al.
patent: 4948573 (1990-08-01), Nadkarni et al.

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