Basf Corporation

Engelhard Corporation

Heesung Catalysts Corporation

N.e. Chemcat Corporation

Basf Se Corporation

Smithkline Beecham Corporation

Basf Catalysts LLC

Heesung Cataysts Corporation

Basf Mobile Emissions Catalysts LLC

Patrick L Burk

Joseph Charles Dettling

Wen-Mei Xue

Ahmad Moini

Joseph Allan Patchett

Gerald Stephen Koermer

Ivor Bull

R Samuel Boorse

Matthew Tyler Caudle

William Michael Jaglowski

Jaya L Mohanan

Yasuyuki Banno

Eunseok Kim

Shiang Sung

Makoto Nagata

Michael Breen

Barbara K Slawski

Michel Deeba

John Joseph Steger

Marcus Hilgendorff

Xinyi Wei

Shau-Lin Franklin Chen

Xiaolai Zheng

Zhicheng Hu

Jaya L Monahan

Chung-Zong Wan

Harold N Rabinowitz

John K Hochmuth

Christopher M Minnella

Aaron N Israel

Barbara Slawski

Wei Lin

Kenneth Edwin Voss

Ronald Marshall Heck

Torsten Neubauer

Samuel J Tauster

Michael P Galligan

Jun Youb Lee

Gerd Grubert

Sanath V Kumar

Alfred Helmut Punke

Pascaline H Nguyen

Eric W Stern

Jeff H Yang

Torsten W Müller-Stach

Joseph Marian Fortunak

Youchang Xie

Mark Mellinger

Joseph A Patchett

Helke Doering

Antonietta Rose Mastrocola

Knut Wasserman

Jeffrey Lee Wood

Makato Nagata

Jinwoo Song

Samuel Boorse

William M Jaglowski

Alfred H Punke

W Jaglowski

This disclosure is directed to catalyst compositions, catalytic articles for purifying exhaust gas emissions and methods of making and using the same. In particular, the disclosure relates to a catalytic article including a catalytic material on a substrate, wherein the catalytic material has a first layer and a second layer. The first layer provides effective lean NOtrap functionality and the second layer provides effective three-way conversion of carbon monoxide, hydrocarbons, and nitrogen oxides (NO).

TWC system for fuel cut NOcontrol

Zeolite catalysts and systems and methods for preparing and using zeolite catalysts having the CHA crystal structure are disclosed. The catalysts can be used to remove nitrogen oxides from a gaseous medium across a broad temperature range and exhibit hydrothermal stable at high reaction temperatures. The zeolite catalysts include a zeolite carrier having a silica to alumina ratio from about 15:1 to about 256:1 and a copper to alumina ratio from about 0.25:1 to about 1:1.

Copper CHA zeolite catalysts

The present disclosure provides SCR catalyst compositions, catalyst articles, and catalyst systems, as well as methods of reducing the amount of NOx present in an engine exhaust gas, particularly exhaust from a gasoline engine. The catalyst compositions particularly can comprise a doped ceria substrate, particularly a ceria support doped with at least a niobia component, and optionally further doped with a further material, particularly a base metal oxide (BMO).

Catalytic composites comprising Nb2O5/CeO2 SCR component

Described are compositions and catalytic articles comprising both a first molecular sieve promoted with copper and a second molecular sieve promoted with iron, the first and second molecular sieves having a d6r unit and the first molecular sieves having cubic shaped crystals with an average crystal size of about 0.5 to about 2 microns. The weight ratio of the copper-promoted molecular sieve to the iron-promoted molecular sieve can be about 1:1 to about 4:1. The catalytic articles are useful in methods and systems to catalyze the reduction of nitrogen oxides in the presence of a reductant.

Mixed metal large crystal molecular sieve catalyst compositions, catalytic articles, systems and methods

A catalyst for the treatment of exhaust gas emissions is disclosed. The catalyst can comprise ceria-alumina particles having a ceria phase present in a weight percent of the composite in the range of about 20% to about 80% on an oxide basis, an alkaline earth metal component supported on the ceria-alumina particles, wherein the CeOis present in the form of crystallites that are hydrothermally stable and have an average crystallite size less than 160 &#x212b; after aging at 950&#xb0; C. for 5 hours in 2% Oand 10% steam in N.

Catalyst with improved hydrothermal stability

A lean NOtrap for the treatment of exhaust gas emissions, such as the oxidation of unburned hydrocarbons (HC), and carbon monoxide (CO), and the trapping and reduction of nitrogen oxides (NO) is disclosed. Nitrogen oxide storage catalysts can comprise a layer on a substrate including ceria-alumina particles having a ceria phase present in a weight percent of the composite in the range of about 20% to about 80% on an oxide basis, an alkaline earth metal component supported on the ceria-alumina particles, wherein the CeOis present in the form of crystallites that are hydrothermally stable and have an average crystallite size less than 130 &#x212b; after aging at 950&#xb0; C. for 5 hours in 2% Oand 10% steam in N.

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A diesel oxidation catalyst for the treatment of exhaust gas emissions, such as the oxidation of unburned hydrocarbons (HC), and carbon monoxide (CO) and the reduction of nitrogen oxides (NOx) is described. More particularly, the present invention is directed to a washcoat composition comprising high silica to alumina zeolite and platinum and palladium such that the zeolite minimizes negative interactions of these platinum group metals with the zeolite.

Pt-Pd diesel oxidation catalyst with CO/HC light-off and HC storage function

The present invention is directed to a lean NOx trap diesel oxidation catalyst for the treatment of exhaust gas emissions, such as the oxidation of unburned hydrocarbons (HC), and carbon monoxide (CO) and the trapping and reduction of nitrogen oxides (NOx). Catalytic composites can comprise a catalytic material on a carrier, the catalytic material comprising a first NOx trap layer that comprises a NOx sorbent and one or more precious metal components located on the carrier and a second NOx trap layer containing hydrocarbon trapping functionality located over the first NOx trap layer that comprises a NOx sorbent, one or more precious metal components, and a zeolite, for example a beta zeolite, wherein the zeolite is substantially free of framework aluminum. Such zeolites are characterized by high crystallinity and/or by being substantially free of framework aluminum to minimize surface acidity.

Lean NOx trap diesel oxidation catalyst with hydrocarbon storage function

Described are compositions and catalytic articles comprising both a copper-promoted 8-ring small pore molecular sieve and an iron-promoted 8-ring small pore molecular sieve. The catalytic articles are useful in methods and systems to catalyze the reduction of nitrogen oxides in the presence of a reductant.

Mixed metal 8-ring small pore molecular sieve catalyst compositions, catalytic articles, systems, and methods

Described is a selective catalytic reduction catalyst comprising an iron-promoted 8-ring small pore molecular sieve. Systems and methods for using these iron-promoted 8-ring small molecular sieves as catalysts in a variety of processes such as abating pollutants in exhaust gases and conversion processes are also described.

8-ring small pore molecular sieve as high temperature SCR catalyst

Described are compositions and catalytic articles comprising a copper-promoted 8-ring small pore molecular sieve and an iron-promoted 8-ring small pore molecular sieve. The catalytic articles are useful in methods and systems to catalyze the reduction of nitrogen oxides in the presence of a reductant.

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Freehold, NJ, United States of America

Patrick L Burk