Basf Corporation

M Shahjahan Kazi

Michel Deeba

Stanley Allen Roth

Kenneth Edwin Voss

Jeffrey Barmont Hoke

Yuejin Li

Torsten Neubauer

Chung-Zong Wan

Xinyi Wei

Gerd Grubert

Alfred Helmut Punke

Kevin A Hallstrom

Robert Dorner

Sandip D Shah

David M Youngren

Torsten Wolfgang Mueller-Stach

Fabien A Rioult

Andrew Thoms

Shlang Sung

A system for treatment of an exhaust gas stream from an engine is provided, containing an upstream selective catalytic reduction (SCR) catalyst, which receives the exhaust gas stream without any intervening catalyst, a diesel oxidation catalyst (DOC) positioned downstream thereof; a catalyzed soot filter (CSF) downstream of the diesel oxidation catalyst; a second SCR catalyst positioned downstream of the catalyzed soot filter; and an ammonia oxidation (AMOx) catalyst. The application also describes use of such systems to reduce nitrogen oxides (NOx) and hydrocarbons (HC) in an exhaust gas stream.

Exhaust gas treatment system with upstream SCR catalyst

An oxidation catalyst composite, methods, and systems for the treatment of exhaust gas emissions from a diesel engine are described. More particularly, an oxidation catalyst composite including a zoned diesel oxidation catalyst with a first washcoat zone with a Pt/Pd ratio that is less than 3:1 and a PGM loading at least twice that of a second washcoat zone.

Zoned catalyst for diesel applications

Catalyzed soot filters comprising a wall flow monolith having a washcoat comprising an alkali base metal composite disposed on the monolith. Methods of manufacturing and using catalyzed soot filters and diesel engine exhaust emission treatment systems are also disclosed.

Catalyzed soot filters,  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

Growing community of inventors

Kendall Park, NJ, United States of America

M Shahjahan Kazi