Passivating of vanadium accumulated on inert or catalytic...

Details Passivating of vanadium accumulated on inert or catalytic... Passivating of vanadium accumulated on inert or catalytic...

C - Chemistry, Metallurgy

10

G

252/5

C10G 11/05 (2006.01) B01J 23/10 (2006.01) B01J 29/06 (2006.01) B01J 33/00 (2006.01)

Patent

CA 1212367

-34- ABSTRACT Passivation of vanadium accumulated on catalyst, e.g. crystalline zeolite hydrocarbon conversion catalyst in the rare earth and/or ammonia exchanged zeolite form, effectively minimizes the degrading characteristics of accumulated vanadium on the catalyst. The passivation is accomplished by impregnating or, preferrable, precipitating, rare earths, e.g. lanthanum, onto the catalyst particles before and/or after vanadium accumulation. The process is also applicable to inert sorbent particles, e.g. those used for removing carbon and metals from contaminated hydrocarbons.

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