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US 4,283,274 AGranted
Process for cracking hydrocarbons with a cracking catalyst passivated with thallium
AssigneePhillips Petroleum Company
InventorsBrent J. Bertus, Dwight L. McKay
Life of this patent
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Abstract
A hydrocarbon cracking catalyst treated with thallium to passivate thereon contaminating metals, e.g., vanadium, iron and/or nickel is used in a process for cracking a hydrocarbon.
Claims4
A process for cracking a hydrocarbon oil employing an oil cracking catalyst containing zeolite, the effectiveness of which can be reduced by contaminating metal deposits thereon resulting from said hydrocarbon oil which comprises passivating such metal on such catalyst whenever it appears by adding to said catalyst a thallium supplying material.
Dependencies are inferred from the claim text.