Patent ID: 6355591
Filing Date: 2002-03-12
Classification: B01J,C10G

Abstract:
A fluid catalytic cracking additive composition to obtain an enhanced yield of liquefied petroleum gas in catalytic cracking of high boiling petroleum feed stocks comprising calcined, spray-dried microspheres, said microspheres having a composition comprising 4 to 20 wt. % Aluminum Phosphate Composite, said composite having a surface area of 3.5 m2/g, a X-ray peak at two-theta value of 16.18Â°, an Al to PO4 molar ratio of 1:3, and a pH from 0.1 to 2 under spray drier conditions; 1-40 wt. % of crystalline molecular sieve Zeolites selected from the group consisting of mordenite, ZSM-5, Beta and mixtures thereof, and 40-90 wt. % clay, wherein said aluminum phosphate composite is obtained by transformation of an aluminum phosphate precursor slurry.