Catalyst regeneration of boric acid on carbon catalysts

Details Catalyst regeneration of boric acid on carbon catalysts Catalyst regeneration of boric acid on carbon catalysts

1977-09-09

1979-05-22

Garvin, Patrick

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252416, 2602393A, B01J 2120, C07D 2310

Patent

active

041558766

ABSTRACT:
A process for the regeneration of a granular, supported catalyst of boric acid on carbon, wherein a part of the catalyst is removed from a fluidized bed reactor, in which cyclohexanone oxime is rearranged into caprolactam on this catalyst, when the "differential content in the catalyst of organic nitrogen" is between 0.3 and 2.0% by weight and is replaced by an equal amount of regenerated catalyst so that the differential organic nitrogen content remains in the above-mentioned range, the quantity of catalyst removed is regenerated with air in a fluidized bed at a temperature of from 400.degree. to 700.degree. C. and is returned to the fluidized bed reactor used for rearrangement when a further part of the catalyst is removed therefrom for regeneration.

REFERENCES:
patent: 3586668 (1971-06-01), Immel et al.

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