Basf Corporation

Basf Se Corporation

Basf Mobile Emissions Catalysts LLC

Marcus Hilgendorff

Torsten Neubauer

Gerd Grubert

Alfred Helmut Punke

Stanley Allen Roth

Yuejin Li

Torsten W Müller-Stach

Jeffrey Barmont Hoke

Patrick L Burk

Wen-Mei Xue

Susanne Stiebels

Xinyi Wei

Matthew Tyler Caudle

Chung-Zong Wan

Karifala Dumbuya

Ahmad Moini

Shiang Sung

Olga Gerlach

Andreas Sundermann

Xiaolai Zheng

Claudia Zabel

Stephan Siemund

Matthias Peter

Marko Buchholz

Ruediger Wolff

Helke Doering

Andreas Stohr

Hermann Bidlingmaier

Joachim Fellger

Wen Mei Xue

Cesar Tolentino

Alfred Punke

Torsten Muller-Stach

Alfred H Punke

Torsten Müller-Stach

The present invention relates to an ammonia oxidation catalyst for the treatment of an exhaust gas stream, the catalyst comprising a coating disposed on a substrate, wherein the coating comprises a selective catalytic reduction component being a zeolitic material comprising one or more of copper and iron; and an oxidation catalytic component comprising platinum supported on a porous non-zeolitic oxidic support, wherein the oxidation catalytic component further comprises a first oxidic material supported on the porous non-zeolitic oxidic support supporting platinum, wherein the first oxidic material comprises titania.

Ammonia oxidation catalyst for diesel applications

The present invention relates to a selective catalytic reduction catalyst for the treatment of an exhaust gas of a diesel engine comprising: a flow-through substrate comprising an inlet end, an outlet end, a substrate axial length extending from the inlet end to the outlet end and a plurality of passages defined by internal walls of the flow through substrate extending therethrough; a coating disposed on the surface of the internal walls of the substrate, wherein the coating comprises a non-zeolitic oxidic material comprising manganese and one or more of the metals of the groups 4 to 11 and 13 of the periodic table, and further comprises one or more of a vanadium oxide and a zeolitic material comprising one or more of copper and iron.

Selective catalytic reduction catalyst for the treatment of an exhaust gas of a diesel engine

A catalyst containing a washcoat including copper or iron on a small pore molecular sieve material having a maximum ring size of eight tetrahedral atoms physically mixed with platinum and rhodium on a refractory metal oxide support including alumina, silica, zirconia, titania, and a physical mixture or a chemical combination or an atomically doped combination thereof is described. A catalyst containing a first washcoat zone substantially free of platinum group metal and including copper or iron on a small pore molecular sieve material having a maximum ring size of eight tetrahedral atoms; and a second washcoat zone including copper or iron on a small pore molecular sieve material having a maximum ring size of eight tetrahedral atoms physically mixed with platinum or platinum and rhodium on a refractory metal oxide support including alumina, silica, zirconia, titania, and a physical mixture or a chemical combination or an atomically doped combination thereof is provided. A method and a system for treating emissions using the catalyst are also described.

Integrated SCR and ammonia oxidation catalyst systems

A lean burn engine exhaust treatment articles comprising a low temperature lean NOtrap (LT-LNT) composition and methods for their use is disclosed. A lean burn engine exhaust gas treatment system including the lean burn engine exhaust treatment articles is also disclosed. The low temperature lean NOtrap (LT-LNT) compositions can comprise a washcoat layer on a carrier substrate, the washcoat layer including a platinum group metal component impregnated on a first support material comprising at least 50% alumina. The washcoat layer may further include a low temperature NOstorage material comprising a bulk particulate reducible metal oxide. Methods of monitoring the aging state of a lean burn oxidation catalyst in a lean burn engine catalyst system are also disclosed.

NOadsorber catalyst, methods and systems

Described is a process for the preparation of a catalyst. The process comprises (i) providing a substrate which is optionally coated with one or more coating layers; (ii) impregnating one or more particulate support materials with one or more platinum group elements; (iii) adding one or more alkaline earth elements and one or more solvents to the product obtained in step (ii) to obtain a slurry; (iv) adjusting the pH of the slurry obtained in step (iii) to a value ranging from 7 to 10 (v) adjusting the pH of the slurry to a value ranging from 2 to 6; (vi) optionally milling the slurry obtained in step (v); (vii) providing the slurry obtained in step (vi) onto the optionally coated substrate in one or more coating steps. Describes is as a catalyst which is obtainable according to said process and its use in the treatment of exhaust gas.

Oxidation catalyst and method for its preparation

Processes for manufacturing nitrogen oxide storage materials and lean NOx trap catalysts are disclosed. Also disclosed are nitrogen oxide storage material made by processes comprising barium carbonate (BaCO) and ceria (CeO) by using Ba(OH)instead of most or all Ba(OOCH)to reduce cost and reduce harmful byproducts. Aspects of the present invention also relate generally to lean NOtrap (LNT) comprising nitrogen oxide storage materials.

Process for manufacture of NOstorage materials

A catalyzed soot filter, in particular for the treatment of Diesel engine exhaust, comprises a coating design which ensures soot particulates filtration, assists the oxidation of carbon monoxide (CO), and produces low HS emissions during normal engine operations and regeneration events.

Catalyzed soot filter

A lean NOtrap composition 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. The lean NOtrap composition can have a washcoat layer on a carrier substrate including a first support material comprising greater than 50% by weight of a reducible metal oxide; 10 to 30% by weight of alkaline earth metal supported on a second support material comprising a refractory metal oxide and 50% or less by weight of a reducible metal oxide and; and a platinum group metal component supported on at least one of the first support material and/or the second support material. A portion of the first support material may further include 0.5% to 10% by weight of an alkaline earth metal.

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The present invention relates to catalyzed soot filter comprising a porous wall flow substrate, a catalyst for selective catalytic reduction (SCR), a palladium component, and a platinum component, the wall flow substrate comprising an inlet end, an outlet end, a substrate axial length extending between the inlet end and the outlet end, and a plurality of channels defined by internal walls of the wall flow substrate, wherein the plurality of channels comprise inlet channels having an open inlet end and a closed outlet end, and outlet channels having a closed inlet end and an open outlet end, and the SCR catalyst is provided on the entire surface of the inlet channel walls and on at least a portion of the surface of the pores within the channel walls underneath the surface of the channel walls coated with the SCR catalyst.

Catalyzed soot filter for use in passive selective catalytic reduction

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.

Nitrogen oxide storage catalysts comprising a substrate and at least two coating layers, where the second layer is substantially free of platinum, cerium and barium, and methods of manufacturing and using these nitrogen oxide storage catalysts are disclosed.

NOx storage materials and traps resistant to thermal aging

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

Described are catalyst compositions, catalytic articles, methods of manufacturing catalytic articles and exhaust gas treatment systems and methods that utilize the catalytic articles. The catalytic articles include a washcoat of platinum group metal on refractory oxide support particles, and further including a molecular sieve wherein greater than 90% of the molecular sieve particles have a particle size greater than 1 &#x3bc;m.

Catalyst compositions, catalytic articles, systems and processes using large particle molecular sieves

Described is a catalyst comprising a substrate and a catalyst coating of two or more layers: (a) a first layer comprising Pt and/or Pd on the substrate; and (b) a second layer comprising Pt on the first layer; these layers each further comprising: one or more particulate support materials; one or more oxygen storage component (OSC) materials; and one or more nitrogen oxide storage materials comprising one or more elements selected from the group of alkali and/or alkaline earth metals, wherein the total amount of alkali and alkaline earth metals ranges from 0.18 to 2.5 g/incalculated as the respective alkali metal oxides MO and alkaline earth metal oxides MO. Also described is a method for the production of a catalyst, as well as a process for the treatment of a gas stream comprising nitrogen oxide, in particular of an exhaust gas stream resulting from an internal combustion engine.

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Hannover, Germany

Marcus Hilgendorff