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. A catalyst system, comprising:
a substrate; a washcoat suitable for deposition on the substrate, comprising Praseodymium-doped Zirconium oxide; and an impregnation layer, comprising at least one second catalyst;wherein the at least one second catalyst comprises about 1% to about 10% by weight silver about 10% to about 40% by weight lanthanum, and about 10% to about 30% by weight manganese.