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.