Process for reactivating an iridium-containing catalyst

Details Process for reactivating an iridium-containing catalyst Process for reactivating an iridium-containing catalyst

C - Chemistry, Metallurgy

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C10G 11/02 (2006.01) B01J 23/96 (2006.01) C10G 35/085 (2006.01) C10G 35/09 (2006.01)

Patent

CA 1125214

U.S. 907,928 ABSTRACT OF THE DISCLOSURE This invention relates to improvements in a process for treating a catalyst, or bed of catalyst, comprised of a composite of an iridium metal or admixture of said metal with other metals, particularly platinum, or admixtures of iridium and platinum with other metals, halogen, and a refractory porous inorganic oxide, notably alumina which has been deactivated by coke de- position thereon. The time required for reactivation of such catalyst can be shortened by deliberate agglomeration of the iridium, or admixture of iridium and other metal hydrogenation-dehydrogenation components, above about seventy percent, prior to one or more cycles of sequential reduction/ halogenation treatments. The desired high agglomeration of iridium, or admixture of iridium and other metal hydrogenation-dehydrogenation com- ponents, is preferably accomplished by a relatively severe coke burn.

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