Process for reactivation of iridium-containing catalysts

Details Process for reactivation of iridium-containing catalysts Process for reactivation of iridium-containing catalysts

1973-08-16

1976-03-02

Douglas, Winston A.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

208140, B01J 2396, C10G 3508

Patent

active

039417166

ABSTRACT:
In a process for redispersion of the iridium agglomerates (irridium and/or iridium oxide) of a deactivated iridium-containing catalyst, especially a platinum-iridium catalyst, in ferrous metal equipment, wherein the agglomerated iridium, or agglomerated platinum and iridium, is redispersed and the catalyst reactivated by sequential prereduction-halogen treatments, the improvement comprising adding and maintaining small amounts of water with the halogen to suppress ferrous metal corrosion and catalyst contamination during the required treatment with halogen.

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patent: 3117076 (1964-01-01), Brennan et al.
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patent: 3554902 (1971-01-01), Buss
patent: 3625860 (1971-12-01), Condrasky
patent: 3637524 (1972-01-01), Johnson et al.
patent: 3673109 (1972-06-01), Georgescv et al.
patent: 3684693 (1972-08-01), Sinfelt
patent: 3707509 (1972-12-01), Georgescv et al.
patent: 3764557 (1973-10-01), Kluksdahl

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