Patent ID: 8642499

Claim:
A method of forming a catalytic cracking catalyst having a high matrix surface area, said method comprising a. forming an aqueous slurry comprising at least one zeolite particle having catalytic cracking activity under catalytic cracking conditions and a negative surface charge at a pH of about 7, at least one siliceous metal oxide having a negative surface change at a pH of about 7 and aluminum chlorhydrol; b. milling the slurry; c. spraying the milled slurry to formed catalyst particles; d. calcining the spray-dried catalyst particles at a temperature and for a time sufficient to remove volatiles; e. re-slurrying the calcined catalyst particles in an aqueous base solution at a pH of about 7 for a time and at a temperature sufficient to precipitate alumina throughout the catalyst particles; and f. removing the catalyst particles.