Method for reactivating palladium catalysts

Details Method for reactivating palladium catalysts Method for reactivating palladium catalysts

1974-11-26

1976-05-25

Morgenstern, Norman

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

252411R, 252411S, 260468R, 260514R, 260611R, 260617R, 260631H, C07C 4500, B01D 1506

Patent

active

039593827

ABSTRACT:
Palladium catalysts employed in the hydrogenation of reducible cyclic organic compounds containing deleterious nitrogen impurities are reactivated according to a process comprising separating spent catalyst from the hydrogenation reaction mixture; contacting the separated spent catalyst in a liquid reaction medium with a reactivating agent selected from the group consisting of alkali metal and alkaline earth metal bicarbonates, carbonates, nitrates, chlorides, fluorides, hydroxides and mixtures thereof, to reactivate the catalyst; and recovering the reactivated catalyst for recycle to the hydrogenation reaction mixture.

REFERENCES:
patent: 2692240 (1954-10-01), Sprauer
patent: 2760940 (1956-04-01), Schwarzenbek
patent: 3542863 (1970-11-01), Zimmerschred

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