Method for platinum or palladium catalyst reactivation

Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants

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252415, 252416, 260561H, B01J 2396, B01J 2120, C07C10332

Patent

active

041208196

ABSTRACT:
Palladium or platinum catalyst values poisoned in course of catalyzing the reductive alkylation of an acid hydrazide are essentially completely reactivated by treating the spent catalyst values with a dilute aqueous solution of a lower monocarboxylic acid or a mineral acid and contacting the resultant slurry with oxygen gas or a labile oxygen containing compound.

REFERENCES:
patent: 3016354 (1962-01-01), Hindin et al.
patent: 3488295 (1970-01-01), Sennewald
patent: 4045484 (1977-08-01), Maiz, Jr. et al.

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