Basf Corporation

Torsten Wolfgang Mueller-Stach

Stanley Allen Roth

Michel Deeba

Jeffrey Barmont Hoke

Shiang Sung

Yuejin Li

Torsten Neubauer

Chung-Zong Wan

Xinyi Wei

Gerd Grubert

Alfred Helmut Punke

Attilio Siani

M Shahjahan Kazi

Shlang Sung

Diesel oxidation catalysts comprising a first washcoat layer including a platinum group metal impregnated on a promoted non-zeolitic support are described. The promoter is one or more of tin, manganese, indium, group VIII metals. Methods of making and using the diesel oxidation catalyst, including emissions treatment systems, are also described.

Diesel oxidation catalysts, systems and methods of treatment

Provided are diesel exhaust components where palladium is segregated from a molecular sieve, specifically a zeolite, in a catalytic material. In the catalytic material, therefore, there are at least two layers: a palladium-containing layer that is substantially free of a molecular sieve and a hydrocarbon trap layer that comprises at least one molecular sieve and is substantially free of palladium. The palladium is provided on a high surface area, porous refractory metal oxide support. The catalytic material can further comprise a platinum component, where a minor amount of the platinum component is in the hydrocarbon trap layer, and a majority amount of the platinum component is in the palladium-containing layer. Systems and methods of using the same are also provided.

Layered diesel oxidation catalyst composites

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Hannover, Germany

Torsten Wolfgang Mueller-Stach