Copper-Manganese Spinel Catalysts and Methods of Making Same

摘要

Disclosed here are material formulations of use in the conversion of exhaust gases, where the formulations may include Copper (Cu), Manganese (Mn) and combinations thereof. Combinations of use may include Cu—Mn Spinels. Catalysts including these materials may be synthesized by methods including co-precipitation, co-milling, templating, and the sol-gel method, using any suitable carrier material oxide and any suitable oxygen storage material. The properties of the catalysts disclosed may vary according to the calcining temperature, where stoichiometric and non-stoichiometric Cu—Mn Spinels may form when calcining suitable formulations at suitable temperatures.

主权项

1. A 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 metal oxide, and a 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 metal oxide, and a catalyst; wherein at least one of the catalysts 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 and wherein a portion of the at least one spinel structured compound is stoichiometric; and wherein the at least one spinel structured compound is formed by calcination at a temperature in a range of about 300° C. to about 800° C.