MESOPOROUS FCC CATALYST FORMULATED WITH GIBBSITE AND RARE EARTH OXIDE

摘要

A FCC catalyst having improved coke selectivity and a FCC processfor converting hydrocarbon feedstocks to lower boiling products. The catalystcomprises a crystalline aluminosilicate zeolite, gibbsite, rare earth metal compoundand a silica matrix prepared from at least one of a silica sol made by anion-exchange process and an acidic silica sol prepared by mixing sodium silicate, anacid and an aluminum salt of an acid.