FCC CO OXIDATION PROMOTERS

摘要

Compositions suitable for use in FCC are provided that are capable of providing CO oxidation promoting activity along with NOx emission control, generally, compositions are provided for promoting CO oxidation in FCC processses, said compositions comprising (i) a particulate basic material support, (ii) at least de precious metal for promoting co oxidation, and 8iii) metals of metal oxides capable of decomposip NOx, said at least one precious metal (ii) being priarily distributed in the central interior of said particulute additive and said metals or metal oxides (iii) priorily distributed throughout said particulate additive, including as a shell around said at least one precious metal.