NiO catalyst configurations, methods for making NOx...

Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide

Reexamination Certificate

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C502S259000, C502S326000, C502S327000, C502S333000, C502S334000, C502S335000, C502S337000, C502S339000, C502S527120, C502S527130

Reexamination Certificate

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06930073

ABSTRACT:
In one embodiment, a catalyst configuration, comprises: a substrate, a NiO layer disposed on the substrate, wherein the NiO layer comprises greater than or equal to about 75 wt % of the NiO in the catalyst configuration; and a catalyst layer comprising a NOx adsorbing catalyst. In another embodiment, a catalyst configuration, comprises: a substrate, a catalyst layer disposed on the substrate, wherein the catalyst layer comprises a NOx adsorbing catalyst and thermally treated NiO.In one embodiment, the method for making a NOx adsorber comprises: thermally treating NiO to a temperature of about a maximum catalyst application temperature minus 100° C. and the maximum catalyst application temperature, disposing a catalyst configuration on the substrate, wherein the catalyst configuration comprises the thermally treated NiO and a NOx adsorption catalyst, and disposing the substrate in a housing.

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