Basf Corporation

Engelhard Corporation

Basf Mobile Emissions Catalysts LLC

Basf Se Corporation

Basf Catalysts LLC

Shiang Sung

Stanley Allen Roth

Susanne Stiebels

Olga Gerlach

Claudia Zabel

Torsten Neubauer

Andreas Sundermann

Markus Koegel

Patrick L Burk

John Joseph Steger

Gerd Grubert

Karifala Dumbuya

Jeffrey Barmont Hoke

Yuejin Li

Joseph Charles Dettling

Michel Deeba

Harold N Rabinowitz

Xinyi Wei

Xiaolai Zheng

Alfred Helmut Punke

Attilio Siani

Torsten W Müller-Stach

Pascaline Tran

Kenneth Edwin Voss

Chung-Zong Wan

Patrick William McCanty

Pushkaraj R Patwardhan

Rudolf M Smaling

Markus Kögel

Alfred Punke

Sven Jare Lohmeier

Michael P Galligan

Marcus Hilgendorff

Garo Khanarian

Zhicheng Hu

Kevin A Hallstrom

John K Hochmuth

Joseph H Wu

Claudia Wendt

Saeed Alerasool

Aleksei Vjunov

Ramesh M Kakwani

Dennis Ray Anderson

Michael Locascio

Torsten Wolfgang Mueller-Stach

Chunxin Ji

Helke Doering

Bjoern Neumann

Stanley D Roth

Arne Tobias Niggebaum

Pavel Ruvinskiy

Emre Emmez

Alfred H Punke

W Torsten MÜLLER-Stach

Atilio Siani

Torsten Müller-Stach

Torsten Muller-Stach

Barmont Jeffrey Hoke

A Stanley Roth

Helmut Alfred Punke

Wolfgang Torsten Mueller-Stach

Shahjahan M Kazi

Patrick Mccanty

The presently claimed invention provides a layered catalytic article and an exhaust system. The catalytic article comprises a first layer comprising platinum, a first platinum group metal component other than platinum, a ceria-alumina composite, and an oxygen storage component; wherein platinum is supported on the ceria-alumina component; the platinum group metal component is selected from palladium, rhodium or a combination thereof and the platinum group metal component is supported on the oxygen storage component; a second layer comprising a second platinum group metal component; and a refractory alumina component, an oxygen storage component or a combination thereof; wherein the second platinum group component is selected from platinum, palladium, rhodium or a combination thereof; and a substrate, wherein the amount of platinum is 10 to 80 wt. %, based on the total weight of platinum, palladium and rhodium. The presently claimed invention also provides a process for the preparation of a layered catalytic article and use of the catalytic article and the exhaust system for purifying a gaseous exhaust stream comprising hydrocarbons, carbon monoxide, and nitrogen oxides.

Layered catalytic article and method of manufacturing the catalytic article

The disclosure provides a system for treating an exhaust gas stream from a gasoline engine. The system is configured to introduce controlled quantities of hydrogen gas into the exhaust gas stream upstream of a catalyst article during a cold-start period. Further provided are related methods of treating such exhaust streams. Such systems and methods are useful in reducing a level of one or more of hydrocarbons, carbon monoxide, and nitrogen oxide in a gaseous exhaust stream from a gasoline engine.

Performance enhancement of a catalyst via exhaust gas hydrogen enrichment

An oxidation catalyst composite, methods, and systems for the treatment of exhaust gas emissions from a diesel engine are described. More particularly, described is an oxidation catalyst composite including a first oxidation component comprising a first refractory metal oxide support, palladium (Pd) and platinum (Pt); a NOstorage component comprising one or more of alumina, silica, titania, ceria, or manganese; and a second oxidation component comprising a second refractory metal oxide, a zeolite, and Pt. The oxidation catalyst composite is sulfur tolerant, adsorbs NOand thermally releases the stored NOat temperature less than 350° C.

Diesel oxidation catalyst

The present invention relates a system for the treatment of an exhaust gas of a diesel combustion engine, said system comprising a specific NOx adsorber component, a diesel oxidation catalyst (DOC) component, a selective catalytic reduction (SCR) component, a gas heating component, and a reductant injector, wherein in said system, the specific NOx adsorber component is arranged upstream of the gas heating component, the reductant injector is arranged up-stream of the SCR component, the gas heating component is arranged upstream of the reductant injector, the DOC component is arranged upstream of the reductant injector, and the DOC component and the gas heating component are directly consecutive components. Further, the present invention relates a process for preparing such a system and use thereof.

Catalytic system for the treatment of an exhaust gas of a combustion engine

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 first washcoat layer comprising a Pt component and a Pd component, and a second washcoat layer including a refractory metal oxide support containing manganese, a zeolite, and a platinum component is described.

Manganese-containing diesel oxidation catalyst

Disclosed herein are emission treatment systems comprising an oxidation catalyst composition in fluid communication with an exhaust gas stream emitted from an engine that combusts both hydrocarbon fuel and hydrogen; and optionally, at least one selective catalytic reduction (SCR) composition and/or at least one three-way conversion (TWC) catalyst composition, combustion systems comprising the same, and method of treating an exhaust gas stream, such as, e.g., an exhaust gas produced by combusting hydrogen fuel during a cold-start period, using the same.

Exhaust treatment system for dual fuel engines

The present disclosure is directed to a method for treating a gaseous exhaust stream containing nitrogen oxides (NO) from a diesel or lean-burn gasoline engine following a cold-start of the engine The method involves contact of the gaseous exhaust stream with at least a low temperature NOadsorber (LT-NA) component. The LT-NA component includes a rare earth metal component, a platinum group metal (PGM) component, and a dopant. The present disclosure is also directed to a method of modulating a NOadsorption/desorption profile of an LT-NA composition, a NOdesorption temperature range of an LT-NA composition, or both.

Tunable NOadsorber

An oxidation catalyst composite for abatement of exhaust gas emissions from a lean burn engine is provided, the catalyst composite including a carrier substrate having a length, an inlet end and an outlet end, and an oxidation catalyst material coated on the carrier substrate. The oxidation catalyst material can include a first layer and a second layer. The first layer can include a first oxygen storage component that includes ceria and is impregnated with a palladium (Pd) component and a second component including one or more of magnesium (Mg), rhodium (Rh), and platinum (Pt). The second layer can include a refractory metal oxide component impregnated with platinum (Pt) and palladium (Pd), wherein the ratio of Pt to Pd is in the range of about 0:10 to about 10:0.

Palladium diesel oxidation 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 first washcoat comprising a zeolite, Pt, and first refractory metal oxide support containing manganese, a second washcoat comprising a second refractory metal oxide support, a Pt component and a Pd component, and a third washcoat comprising palladium and a rare earth oxide component is described.

The present disclosure is directed to an emission treatment system for NOabatement in an exhaust stream of an ammonia-fueled engine, the emission treatment system including a selective catalytic reduction (SCR) catalyst disposed on a substrate in fluid communication with the exhaust stream, an oxidation catalyst disposed on a substrate positioned either upstream or downstream of the SCR catalyst and in fluid communication with the exhaust stream and the SCR catalyst, and optionally, one or more adsorption components disposed on a substrate positioned upstream and/or downstream of the SCR catalyst and in fluid communication with the exhaust stream and the SCR catalyst, the adsorption component chosen from low temperature NOadsorbers (LT-NA), low temperature ammonia adsorbers (LT-AA), low temperature water vapor adsorbers (LT-WA), and combinations thereof. The disclosure further provides a related method of treatment of an exhaust gas.

Exhaust treatment system for ammonia-fueled vehicles

The present disclosure is directed to a low temperature carbon monoxide (LT-CO) oxidation catalyst composition for abatement of exhaust gas emissions from a lean burn engine. The LT-CO oxidation catalyst composition includes an oxygen storage component (OSC), a first platinum group metal (PGM) component, and a promoter metal, wherein the OSC is impregnated with the first PGM component and the promoter metal and the LT-CO oxidation catalyst composition is effective for oxidizing carbon monoxide (CO) and hydrocarbons (HC) under cold start conditions. Further provided are catalytic articles including the LT-CO oxidation catalyst composition, which may optionally further include a diesel oxidation catalyst (DOC) composition (giving an LT-CO/DOC article). Further provided is an exhaust gas treatment system including such catalytic articles, and methods for reducing a HC or CO level in an exhaust gas stream using such catalytic articles.

Low temperature CO oxidation catalyst

Provided herein is a catalytic article including a catalytic coating disposed on a substrate, wherein the catalytic coating comprises a bottom coating on the substrate and a top coating layer on the bottom coating layer, one such coating layer containing a platinum group metal on a refractory metal oxide support and the other such coating layer containing a ceria-containing molecular sieve. Such catalytic articles are effective toward treating exhaust gas streams of internal combustion engines and exhibit outstanding resistance to sulfur.

Catalytic articles

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New York, NY, United States of America

Shiang Sung