Cracking catalysts passivated by barium
AssigneePhillips Petroleum Company
InventorsBrent J. Bertus, Dwight L. McKay
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Abstract
A cracking catalyst is contacted with barium or a compound thereof to mitigate the adverse effects of catalyst contaminants.
Claims16
A process to passivate the metals on a cracking catalyst comprising contacting a zeolite-modified silica-alumina fluid catalytic cracking catalyst having deposited thereon a detrimental amount of at least one detrimental metal selected from the group consisting of nickel, vanadium and iron with a treating agent selected from barium and barium compounds so as to impart to said cracking catalyst a barium concentration of from about 0.01 to about 8 weight percent and mitigate the worsened cracking characteristics of the catalyst caused by the at least one detrimental metal.
Dependencies are inferred from the claim text.