Hydrodehalogenation catalysts and their preparation and use

Details Hydrodehalogenation catalysts and their preparation and use Hydrodehalogenation catalysts and their preparation and use

1993-11-15

1995-09-05

McFarlane, Anthony

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

Catalyst or precursor therefor

Inorganic carbon containing

502185, 502330, 570176, B01J 2118, B01J 2340, B01J 2352

Patent

active

054478960

ABSTRACT:
A carbon-supported metal hydrodehalogenation catalyst is disclosed which is prepared by impregnating a carbon support having an ash content of less than about 0.2% by weight (based on the weight of said support) with a combination of metals consisting essentially of from 5 to 95 parts by weight gold and from 95 to 5 parts by weight total ruthenium, rhodium, palladium, osmium, iridium, and/or platinum; and treating said impregnated carbon composition to dry the composition and to provide metal of said combination in a reduced state, the impregnation of treatment being accomplished at a temperature of about 350.degree. C. or less. The advantageous use of the catalyst for the catalytic hydrogenolysis of fluorohalocarbons and fluorohalohydrocarbons is also disclosed.

REFERENCES:
patent: 4097368 (1978-06-01), Hayes
patent: 5053377 (1991-10-01), Lerot et al.
patent: 5094988 (1992-03-01), Kellner et al.
patent: 5136113 (1992-08-01), Rao
patent: 5149680 (1992-09-01), Kitson et al.

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