US 7,476,638 B2
	Gasoline sulfur reduction in fluid catalytic cracking
Arthur W. Chester, Cherry Hill, N.J. (US); Hye Kyung Cho Timken, Woodbury, N.J. (US); Terry G. Roberie, Ellicott City, Md. (US); and Michael S. Ziebarth, Columbia, Md. (US)
Assigned to W. R. Grace & Co. - Conn., Columbia, Md. (US)
Filed on Dec. 16, 2004, as Appl. No. 11/13,708.
Application 11/013708 is a continuation of application No. 09/144607, filed on Aug. 31, 1998, granted, now 6,852,214.
Prior Publication US 2005/0124485 A1, Jun. 09, 2005
This patent is subject to a terminal disclaimer.
Int. Cl. B01J 21/06 (2006.01)

U.S. Cl. 502—64  [502/60; 502/65; 502/73; 502/79]

6 Claims

1. A fluidizable catalytic cracking product sulfur reduction additive catalyst for reducing the sulfur content of a catalytically cracked gasoline fraction during a catalytic cracking process, which comprises porous particles having a size ranging from about 20 to about 100 microns of USY zeolite having a UCS of from 2.420 to 2.455 nm, an alpha value of from 0.2 to 300 and a bulk silica:alumina ratio of at least 5.0 which contains within the interior pore structure of the zeolite a vanadium metal component in an oxidation state greater than zero in a matrix comprising alumina or silica-alumina with clay.