Process for the regeneration of metallic catalysts

Details Process for the regeneration of metallic catalysts Process for the regeneration of metallic catalysts

1979-05-15

1981-04-07

Konopka, P. E.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252419, 260449M, 2604496M, B01J 2120, B01J 2394, B01J 2396, C07C 104

Patent

active

042605180

ABSTRACT:
A method for the regeneration of metallic hydrogenation catalysts from the class consisting of Ni, Rh, Pd, Ir, Pt and Ru poisoned with sulfur, with or without accompanying carbon deposition, comprising subjecting the catalyst to exposure to oxygen gas in a concentration of about 1-10 ppm. intermixed with an inert gas of the group consisting of He, A, Xe, Kr, N.sub.2 and air substantially free of oxygen to an extent such that the total oxygen molecule throughout is in the range of about 10 to 20 times that of the hydrogen sulfide molecular exposure producing the catalyst poisoning while maintaining the temperature in the range of about 300.degree. to 500.degree. C.

REFERENCES:
patent: 2455419 (1948-12-01), Johnson
patent: 2609345 (1952-09-01), Easly et al.
patent: 3660308 (1972-03-01), Hayes
patent: 4007131 (1977-02-01), Gillespie et al.
patent: 4026821 (1977-05-01), Schoofs et al.
patent: 4079072 (1978-03-01), Finch
patent: 4211718 (1980-07-01), Finch et al.

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