This invention relates to a process for the preparation of a fluid
catalytic cracking catalyst with improved attrition resistance. According
to this preparation process, an aqueous slurry comprising a zeolite, day,
and poly aluminum chloride is spray-dried and subsequently calcined, the
poly aluminum chloride having the formula
[Al.sub.2(OH).sub.yCl.sub.6-y].sub.x, wherein x is at least 1 and y is
greater than 2 and smaller than 4.