Catalytic structure for cleaning exhaust gas

Details Catalytic structure for cleaning exhaust gas Catalytic structure for cleaning exhaust gas

1986-06-12

1988-09-27

Konopka, Paul E.

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

Catalyst or precursor therefor

Inorganic carbon containing

4232135, 502238, 502251, 502252, 502334, 502355, 502527, B01J 27224, B01J 2112, B01J 2114, B01J 2104

Patent

active

047742178

ABSTRACT:
A catalytic structure for cleaning exhaust gas from automobiles, etc., is provided. The catalytic structure comprises a ceramic carrier having a three-dimensional network skeleton forming the intercommunicating voids therein and a catalyst-carried activated alumina layer formed on the surface of the three-dimensional network skeleton. This catalytic structure is produced by contacting a ceramic carrier with a catalyst-containing solution and drying the carrier by evaporating the solvent in the solution so that the catalyst will be carried at a higher density in the activated alumina layer on the side of the skeleton surface against which side the incoming exhaust gas does not impinge, than on the side against which the exhaust gas impinges.

REFERENCES:
patent: 3895917 (1975-07-01), Ravault
patent: 3901821 (1975-08-01), Retallick
patent: 4118199 (1978-10-01), Volker et al.
patent: 4134733 (1979-01-01), Volker et al.
patent: 4308233 (1981-12-01), Narumiya et al.
Abstract of Japanese Kokai 55-88848-7/1980.
Abstract of Japanese Kokai 53-114793-6/1978.

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