Reactivation of spent cracking catalyst.

摘要

A spent zeolite-containing cracking catalyst composition is reactivated by a process comprising the steps of contacting the catalyst composition with a solution of a suitable ammonium compound (preferably an aqueous solution of NH4NO3) and thereafter contacting the ammonium-exchanged cracking catalyst composition with a suitable fluorine compound (preferably a aqueous solution of NH4F). A catalytic cracking process employs the reactivated cracking catalyst composition.