Catalyst – solid sorbent – or support therefor: product or process – Regenerating or rehabilitating catalyst or sorbent – Treating with a liquid or treating in a liquid phase,...
Patent
1993-06-21
1994-05-24
Konopka, Paul E.
Catalyst, solid sorbent, or support therefor: product or process
Regenerating or rehabilitating catalyst or sorbent
Treating with a liquid or treating in a liquid phase,...
60274, 502 33, 502 38, B01J 3848, B01J 3852, B01J 3812, F01N 310
Patent
active
053148517
ABSTRACT:
A novel process and chemicals are disclosed for the rejuvenation of oxidation catalysts used to reduce the production of pollutants in the exhaust gas emanating from an internal combustion engine, particularly catalysts used in the converters of automobiles and other combustion engine powered vehicles. The rejuvenation may be done in place, within minutes, without removing the holding containers or converters or the catalyst from them. The rejuvenation is effected by treating the used catalyst with an aqueous solution of a peroxide which is decomposable at the temperature of treatment. The concentration of solution, the proportion of solution per unit volume of catalyst and the time of treatment are important factors in the effectiveness in regenerating or rejuvenating the catalyst.
REFERENCES:
patent: 1678627 (1928-07-01), Jaeger
patent: 3460901 (1969-08-01), Massa et al.
patent: 4670233 (1987-06-01), Erdemannsdoerfer et al.
Konopka Paul E.
Monacelli Walter J.
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