Regeneration of palladium hydrogenation catalyst

Details Regeneration of palladium hydrogenation catalyst Regeneration of palladium hydrogenation catalyst

1978-01-26

1979-05-01

Douglas, Winston A.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252411R, 260583P, B01J 2396, C07C 8714, C07C 8512

Patent

active

041522915

ABSTRACT:
A palladium hydrogenation catalyst, suitable for hydrogenation of an olefinically unsaturated organic compound, e.g., branched-chain, olefinically unsaturated, aliphatic dinitrile, is regenerated to remove a substantial portion of carbon-containing volatile material on the catalyst, and to reduce by oxidation a substantial portion of carbonaceous material remaining on the catalyst following which it is rapidly cooled, i.e., as fast as reasonably possible, the cooling being sufficiently rapid that the catalyst upon regeneration and reuse will be effective to considerably reduce for an extended period of time the increase in olefinic unsaturation in the hydrogenation process product.

REFERENCES:
patent: 2532311 (1950-12-01), Howk et al.
patent: 2532312 (1950-12-01), Romily
patent: 2664404 (1953-12-01), Blatz et al.
patent: 2879232 (1959-03-01), Malo et al.
patent: 3480558 (1969-11-01), Lum et al.
patent: 3684740 (1972-08-01), Cimbalo
patent: 4053515 (1977-10-01), Drake

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