System and Methods for using Copper- Manganese- Iron Spinel as Zero PGM Catalyst for TWC Applications

摘要

A Cu—Mn—Fe spinel on a plurality of support oxides is disclosed as ZPGM catalyst. The active phase for ZPGM samples may be Cu—Mn—Fe spinel on ZrO₂ or Niobium-Zirconia support oxide. TWC activity may be increased and the effect of support oxide on performance of Cu—Mn—Fe spinel optimized to provide enhanced levels of NO, CO, and HC conversion even when compared to materials used for binary systems of Cu—Mn spinel. Cu—Mn—Fe spinel on support oxide provides optimal and stable spinel phase at a range of temperatures below 900° C. Bulk powder material including the disclosed ternary system may provide active catalyst for TWC applications having a chemical composition substantially free from PGM for cost effective manufacturing.