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US 4,400,307 AGranted
Process for the reduction of the effect of contaminant metals in cracking catalysts
AssigneeMobil Oil Corporation
InventorFred S. Zrinscak
Life of this patent
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Abstract
The deleterious effects of contaminant metals present in feeds to a catalytic cracker can be reduced to a greater extent than that obtainable with conventionally practiced passivation techniques utilizing antimony treated catalysts by pretreating the catalyst with hydrogen sulfide.
Claims3
A cracking catalyst suitable for cracking hydrocarbons comprising an acidic solid which has incorporated therein antimony or a compound thereof to passivate contaminating metals, said catalyst having been treated with hydrogen sulfide effective to further enhance resistance of the antimony-containing acidic solid to metal contamination.
Dependencies are inferred from the claim text.