Patent ID: 7030055

Claim:
A composition for reducing the content of NO x and gas phase reduced nitrogen species during catalyst regeneration in a fluid catalytic cracking (FCC) process said composition comprising particles having a mean particle size of about 50 to about 200 μm and comprising (i) at least about 5.0 wt % of acidic metal oxide containing substantially no zeolite; (ii) a metal component selected from the group consisting of alkali metal, alkaline earth metal, and mixtures thereof; (iii) at least 0.1 wt %, measured as metal oxide, of an oxygen storage metal oxide; and (iv) at least 0.1 ppm of a noble metal component comprising palladium and at least one metal selected from the group consisting of platinum, iridium, rhodium, osmium, ruthenium, rhenium and mixtures thereof, said metal component (ii) being present in amount of at least 0.5 wt %, measured as metal oxide, of the composition.