| 摘要 |
Disclosed here are variations of carrier material oxide formulations to create Cu—Mn spinel, where the formulations may include Ti1-xNbxO2, 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. |
| 主权项 |
1. A zero platinum group metals (ZPGM) 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 at least one of a carrier material oxide, and a first ZPGM catalyst; and an overcoat suitable for deposition on the substrate, comprising at least one overcoat oxide solid selected from the group consisting of at least one of a carrier material oxide, and a second ZPGM catalyst;wherein at least one of the first catalyst and the second catalyst comprises at least one spinel structured compound having the formula AB2O4, wherein each of A and B is selected from the group consisting of at least one of copper and manganese; andwherein one of the at least one carrier material oxide in selected from the group consisting of TiO2, doped TiO2, Ti1-xNbxO2, SiO2, alumina, doped alumina, ZrO2, doped ZrO2, Nb2O5—ZrO2, Nb2O5—ZrO2—CeO2, and combinations thereof. |
