Patent ID: 6528447
Filing Date: 2003-03-04
Classification: B01J,C10G

Abstract:
A process for preparation of a hydrocarbon conversion catalyst for use in a Fluid Catalyst Cracking (FCC) unit, comprising the steps of:preparing a modified alumina-silica composite by reacting alumina with an acid to provide an acidified alumina, aging the acidified alumina for from 0.25 to 60 hours, and adding a silica source to obtain the composite; preparing a dispersed precursor slurry of the modified alumina silica composite, and a rare earth exchanged USY zeolite (REUSY) containing at least one rare earth oxide present in an amount ranging from 3.8 to 4.0 wt %, and optionally kaolin clay; spray drying the slurry to obtain spherical particles; and subjecting the spherical particles to calcination.