Base metal catalyst and method of using same
A catalyst and metal technology, applied in the field of basic metal catalysts, can solve problems such as insufficient reduction of NOx by reducing agent
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Embodiment 1
[0088] 17.546 g Co(NO3)2.6H2O, 25.299 g Fe(NO3)2.9H2O and 14.436 g Mn(NO3)2.4H2O were mixed with 20 g of deionized water to make a solution. Infusion was performed using 35 g of a prefabricated support containing 55% ceria, 15% zirconia and 30% praseodymia. The solution was added dropwise to the support until saturated. The perfused support was then dried at 120°C for 2 hours before adding the rest of the solution. Repeat the prime-dry-prime cycle until no solution remains. Water was then added to the infused sample to create a slurry with a 40% solids content. Continue grinding the slurry until the desired particle size is D90 < 10 microns.
[0089] Use a 1"OD x 1" height with a hole density of 300cpsi overall. Before washing the catalyst slurry, the monolith was coated with a thin layer of alumina to ensure good adhesion of the catalyst formulation. The catalyst coating was applied by dip coating with a washcoat loading of 2 g / in3. The coated monolith was then dried ...
Embodiment 2-6
[0092] These examples were performed using the same prefabricated vector as in Example 1 and following exactly the same procedure as given in Example 1 but with a different formulation. A summary of the formulations of Examples 2-6 can be found in Table 1 below.
[0093] Figure 4 is the XRD pattern of the catalyst from Example 2 showing the phase structure. The lower spectrum shows the catalyst calcined at 500°C, while the upper spectrum shows the catalyst calcined at 950°C. As can be seen from the figure, the catalyst of this example incorporates mixed oxides of zirconium cerium oxide, praseodymium manganese oxide, CuO, Fe2O3, Fe3O4 and ZrO2. .
[0094] Figure 6 is the XRD pattern of the catalyst from Example 3 showing the phase structure. The lower spectrum shows the catalyst calcined at 500°C, while the upper spectrum shows the catalyst calcined at 950°C. As can be seen from the figure, the catalyst of this example incorporates a mixed oxide of zirconium cerium oxid...
Embodiment 7
[0099] Infusion was performed using a prefabricated support containing 50% ceria and 50% alumina. This Ni-only formulation was made using the same infusion procedure as that given in Example 1. The resulting formulations can be found in Table 1 below.
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