High pressure oxygen aqueous phase catalyst demetallization

Details High pressure oxygen aqueous phase catalyst demetallization High pressure oxygen aqueous phase catalyst demetallization

1979-03-26

1980-11-18

Konopka, P. E.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

208113, 208120, 252412, 252413, 252416, 252420, B01J 2938, B01J 2120, C10G 1105, C10G 1104

Patent

active

042344522

ABSTRACT:
An improved demetallization process is disclosed comprising high pressure aqueous phase oxidation of a catalyst contaminated with a metal such as nickel, vanadium, copper and/or iron. The metal-contaminated catalyst can be oxidized in an aqueous phase at high pressure either before regeneration or subsequent to regeneration. Optionally, an oxidative and reductive wash can also be employed.

REFERENCES:
patent: 3147228 (1964-09-01), Erickson
patent: 3150103 (1964-09-01), Anderson
patent: 3557019 (1971-01-01), Van Driesen
patent: 4101444 (1978-07-01), Burk et al.
patent: 4102811 (1978-07-01), Burk et al.

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