FCC Process using low coke-make FCC catalyst

Claim 1

A process for cracking a hydrocarbon charge stock which comprises contacting said charge stock at cracking conditions with a catalytic composite prepared by the method which comprises: (a) preparing a catalyst powder comprising a zeolite crystalline aluminosilicate dispersed in a porous carrier material consisting essentially of silica, zirconia and alumina; (b) mixing said powder with a sufficient amount of an aqueous solution of a water soluble rare earth salt to form a slurry of said catalyst powder, the stoichiometric excess concentration of said rare earth salt in the solution being sufficient to impart to the final catalyst a weight ratio on a volatile free basis of rare earth ions to said carrier material greater than 1.0:100.0; (c) filtering or centrifuging said slurry to separate therefrom a filter cake containing said catalyst powder; and (d) calcining said filter cake without washing or drying said filter cake and recovering the resultant catalytic composite.