Regeneration of spent hydrodesulfurization catalysts with hetero

Details Regeneration of spent hydrodesulfurization catalysts with hetero Regeneration of spent hydrodesulfurization catalysts with hetero

1979-07-19

1981-05-19

Konopka, P. E.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

208216R, 252412, 252414, 423 68, 423150, B01J 2394, B01J 2392, B01J 2120, C10G 2302

Patent

active

042684153

ABSTRACT:
Contacting deactivated hydrodesulfurization catalyst, such as Co-Mo supported on alumina, with a heteropoly acid, such as molybdophosphoric acid or tungstosilicic acid, to which dilute hydrogen peroxide is added, results in a significant enhancement in the rate and extent of carbon and metals removal. Forms of deposited vanadium intractable by other treatments are also removed. The process results in substantially complete regeneration of catalytic activity.

REFERENCES:
patent: 2547380 (1951-04-01), Fleck
patent: 3259588 (1966-07-01), Harvey et al.
patent: 3403111 (1968-09-01), Colgan et al.
patent: 3562150 (1971-02-01), Hamilton et al.
patent: 3635838 (1972-01-01), Gatsis
patent: 3791989 (1974-02-01), Mitchell et al.
patent: 4066574 (1978-01-01), Tamm
patent: 4083771 (1978-04-01), O'Hara

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