REACTIVATION OF SPENT, METAL-CONTAINING CRACKING CATALYSTS

摘要

32949CA of the Invention A spent metal contaminated zeolite-containing catalytic cracking catalyst composition is reactivated by a process which comprises contacting the catalyst composition with an aqueous solution of HCl and/or HNO3 and/or H2SO4 and contacting the acid-treated catalyst composition with at least one antimony compound. The thus reactivated catalyst composition can be employed in a catalytic cracking process.