Basf Se Corporation

Basf Corporation

Burkhard Rabe

Oliver Seel

Gerald Stephen Koermer

Torsten Neubauer

Goetz-Peter Schindler

Knut Wassermann

Attilio Siani

Stephan Siemund

Gary A Gramiccioni

Stefan Kotrel

Howard Furbeck

Thomas Schmitz

Soo Yin Chin

Mirko Arnold

Godwind Tafara Peter Mabande

Dieter Harms

Provided are catalyst composites whose catalytic material is effective to substantially simultaneously oxidize carbon monoxide and hydrocarbons and reduce nitrogen oxides. The catalyst composites have a two-metal layer on a carrier, the two-metal layer comprising a rhodium component supported by a first support comprising a refractory metal oxide component or a first ceria-zirconia composite; a palladium component supported by a second support comprising a second ceria-zirconia composite; one or more of a promoter, stabilizer, or binder; wherein the amount of the total of the first and second ceria-zirconia composites in the two-metal layer is equal to or greater than the amount of the refractory metal oxide component. Methods of making and using the same are also provided.

Automotive catalyst composites having a two-metal layer

The invention relates to a catalyst comprising a monolith composed of a catalytically inert material with low BET surface area and a catalyst layer which has been applied to the monolith and comprises, on an oxidic support material, at least one noble metal selected from the group consisting of the noble metals of group VIII of the Periodic Table of the Elements, optionally tin and/or rhenium, and optionally further metals, wherein the thickness of the catalyst layer is 5 to 500 micrometers.

Monolith catalyst and use thereof

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Husum, Germany

Burkhard Rabe