Methods for Variation of Support Oxide Materials for ZPGM Oxidation Catalysts and Systems Using Same

摘要

Disclosed here are methods of preparing zero platinum group metal catalysts systems with different support oxide material. A ZPGM catalyst system may include a substrate and a washcoat and an impregnation layer, wherein said impregnation layer may include the ZPGM pervoskite catalyst and the washcoat layer may include the support oxides material. Suitable support oxides material may include ZrO2, ZrO2 doped with lanthanide group metals, Nb2O5, Nb2O5—ZrO2, Al2O3 and Al2O3 doped with lanthanide group metals, TiO2 and doped TiO2 or mixtures thereof.

主权项

1. An apparatus for reducing emissions from an engine having associated therewith an exhaust system, the apparatus providing a reaction effective for catalytic reduction, comprising:
at least one source of exhaust comprising NO and NO2; and a catalyst system, comprising:
a substrate;a washcoat suitable for deposition on the substrate, comprising at least one oxide solid selected from the group consisting of a carrier material oxide, at least one first catalyst, and a mixture thereof; andan impregnation layer, comprising at least one second catalyst;wherein the catalyst system oxidizes the NO, NO2 and carbon soot.