| 摘要 |
The present disclosure refers to a plurality of methods employed for production of ZPGM diesel oxidation catalyst systems substantially free of PGM, which may include a substrate, a washcoat, and an impregnation layer. Washcoat may include at least one carrier material oxides. An optional impregnation layer component, which may include at least one ZPGM catalyst. This catalyst system may be free of any oxygen storage material (OSM). Suitable deposition methods and firing systems may be employed in order to form disclosed ZPGM oxidation catalyst systems, which may be able to remove main pollutants from exhaust of diesel engines, by oxidizing toxic gases. |
| 主权项 |
1. An apparatus for reducing emissions from an engine having associated therewith an exhaust system, comprising:
an exhaust source; a substrate; a washcoat suitable for deposition on the substrate, comprising at least one oxide solid further comprising at least one carrier metal oxide and at least one first ZPGM catalyst; and an impregnation layer, comprising at least one second ZPGM catalyst; wherein at least one of the first ZPGM catalyst and second ZPGM catalyst comprises at least one perovskite structured compound having the formula A1-xMxB3, wherein A is selected from the group consisting of at least one of yttrium, strontium, and combinations thereof, B is selected from the group consisting of at least one of transition metal, M is selected from the group consisting of at least one of silver, iron, copper, cerium, niobium, and combinations thereof, and x is between 0 and 1. |
