Title: Regeneration of palladium hydrogenation catalyst

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.

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Inventors: Drake, Charles A. (Nowata, OK, US)

Application Number: 872706
Filing Date: 1978-01-26
Publication_date: 1979-05-01
Assignee: Phillips Petroleum Company (Bartlesville, OK)
Primary Class(es): 558/454 558/467, 564/491
Other Classes:
US Patent Ref:

2532311	Dec, 1950	Howk et al.	260/465.
2532312	Dec, 1950	Romily	260/465.
2664404	Dec, 1953	Blatz et al.	252/419.
2879232	Mar, 1959	Malo et al.	252/416.
3480558	Nov, 1969	Lum et al.	252/416.
3684740	Aug, 1972	Cimbalo	252/416.
4053515	Oct, 1977	Drake	260/583.

Other Refs:
Primary Examiner: Douglas, Winston A.
Assistant Examiner: Konopka, P. E.
Attorney: