Systems and Methods Using Cu-Mn Spinel Catalyst on Varying Carrier Material Oxides for TWC Applications

摘要

Disclosed here are variations of carrier material oxide formulations to create Cu—Mn spinel, where the formulations may include Ti_1-xNb_xO₂, TiO₂, SiO₂, Doped alumina, Nb₂O₅—ZrO₂, Nb₂O₅—ZrO₂—CeO₂, Doped ZrO₂ and combinations thereof. The formation of type of Cu—Mn oxide phase depends on type of carrier material oxide. The crystallite size of Cu—Mn spinel, NO and CO conversion rate of Cu—Mn Spinel may vary according to the carrier material oxide and condition treatment used to form the spinel during co-precipitation method.