Passivation of vanadium accumulated on catalytic solid fluidizab

Details Passivation of vanadium accumulated on catalytic solid fluidizab Passivation of vanadium accumulated on catalytic solid fluidizab

1983-09-15

1985-05-07

Gantz, Delbert E.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208 52CT, 208120, C10G 1105

Patent

active

045156832

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, preferable, 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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