FLUID CATALYTIC CRACKING PROCESS FOR INCREASED FORMATION OF ISOBUTYLENE AND ISOAMYLENES

摘要

2132086 9319138 PCTABS00025 A composite fluid catalytic cracking catalyst comprising a non-zeolitic component of at least 45 % A1203 and containing Í 30 % Y zeolite with unit cell size Í 24.29 A·, the matrix (non-zeolitic component) of said catalyst having a B.E.T. surface area ã 50 m2/g and a catalyst Lewis/Bronsted acid site ratio of ã 1.5 wherein the total number of Bronsted acid sites is Í 30 micromoles/g of catalyst. The catalyste is used to increase the isobutylene and isoamylenes content of cracked products obtained in a fluid catalytic cracking unit.