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AssigneeBASF SE
InventorsShau-Lin F. Chen, Knut Wassermann, Stephan Siemund, Tian Luo, Torsten Neubauer, Jin Sakakibara, Harold Rabinowitz
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A multilayered, three-way conversion catalyst having the capability of simultaneously catalyzing the oxidation of hydrocarbons and carbon monoxide and the reduction of nitrogen oxides is disclosed. Provided is a catalytic material of at least four layers in conjunction with a carrier, where each of the layers includes a support, at least three layers comprise a precious metal component, and at least one layer comprises an oxygen storage component (OSC). The catalytic material can further comprise a fifth layer, where at least four layers comprise a precious metal component, at least one layer comprises an oxygen storage component, and at least one layer is substantially free of an oxygen storage component.
A layered catalyst composite comprising a catalytic material on a carrier, the catalytic material comprising at least five layers, each of the layers including a support, wherein at least four layers comprise a precious metal component on the supports of each of the at least four layers, at least one layer comprises an oxygen storage component, at least one layer is substantially free of an oxygen storage component, and wherein the catalytic material is effective to substantially simultaneously oxidize the carbon monoxide and the hydrocarbons and reduce the nitrogen oxides.
A layered catalyst composite comprising a catalytic material on a carrier, the catalytic material comprising at least four layers, each of the layers including a support, wherein at least three layers comprise a precious metal component on the supports of each of the at least three layers, at least one layer comprises an oxygen storage component, and wherein the catalytic material is effective to substantially simultaneously oxidize the carbon monoxide and the hydrocarbons and reduce the nitrogen oxides,
A layered catalyst composite comprising a catalytic material on a carrier, the catalytic material comprising at least four layers and being effective to substantially simultaneously oxidize carbon monoxide and hydrocarbons and reduce nitrogen oxides, wherein:
Dependencies are inferred from the claim text.