Basf Corporation

Basf Mobile Emissions Catalysts LLC

Basf Se Corporation

Forschungszentrum Juelich Gmbh

Juergen Dornseiffer

Helmut Hackfort

Edgar Huennekes

Edgar Viktor Huennekes

Jan Martin Becker

Kevin David Beard

Kevin Beard

Martin Kalwei

Petra Cordes

Joseph Allan Patchett

Robert Dorner

Joseph A Patchett

Kenneth Edwin Voss

John K Hochmuth

Ansgar Wille

Nicholas Mcguire

Liang Chen

Feng Zhao

Marius Vaarkamp

Kevin A Hallstrom

Sabine Huber

Jia Di Zhang

Edith Schneider

Ruediger Wolff

Diana Carolina Galeano Nunez

Tobias Paul

Jaya L Lakshmi

Arne Kuhlmann

Stefan Kah

Jiadi Zhang

Carolina Galeano

The present disclosure relates to an aqueous suspension comprising water, a source of one or more of a vanadium oxide and a tungsten oxide, and particles of an oxidic support; wherein the particles of the aqueous suspension exhibit a polymodal particle size distribution characterized by a particle size distribution curve comprising a first peak with a maximum M(I) in the range of from 0.5 micrometers to 15 micrometers and a second peak with a maximum M(II) in the range of from 1 micrometers to 40 micrometers, wherein M(I):M(II) is less than 1:1.

Selective catalytic reduction suspension

The present invention relates to an exhaust gas treatment system for treating an exhaust gas stream exiting a diesel engine, wherein said exhaust gas treatment system comprises a first catalyst having an inlet end and an outlet end and comprising a coating disposed on a substrate, wherein the coating comprises palladium supported on an oxidic material comprising zirconium and further comprises one or more of a vanadium oxide and a zeolitic material comprising one or more of copper and iron; a second catalyst having an inlet end and an outlet end and comprising a coating disposed on a substrate, wherein the coating comprises one or more of a vanadium oxide and a zeolitic material comprising one or more of copper and iron, wherein at most 0.0001 weight-% of the coating of the second catalyst consists of platinum group metal.

Exhaust gas treatment system including a multifunctional catalyst

The present invention relates to a catalyst for the selective catalytic reduction of nitrogen oxide, the catalyst comprising a first coating comprising a 12-membered ring pore zeolitic material comprising a first metal which is one or more of copper and iron, and a second coating comprising an 8-membered ring pore zeolitic material comprising a second metal which is one or more of copper and iron.

High ammonia storage capacity SCR catalysts

The present invention relates to a catalyst for the oxidation of hydrocarbon and the selective catalytic reduction of nitrogen oxides, the catalyst comprising a 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 substrate extending therethrough; and a coating disposed on the surface of the internal walls of the substrate, wherein the surface de-fines the interface between the passages and the internal walls, wherein the coating comprises a platinum group metal component supported on a first oxidic material and further comprises a mixed oxide of vanadium and one or more of iron, erbium, bismuth, cerium, europium, gadolinium, holmium, lanthanum, lutetium, neodymium, praseodymium, promethium, samarium, scandium, terbium, thulium, ytterbium, yttrium, molybdenum, tungsten, manganese, cobalt, nickel, copper, aluminum and antimony, wherein the mixed oxide is supported on a second oxidic material.

Multifunctional catalyst for hydrocarbon oxidation and selective catalytic reduction of NOx

An SCR catalyst for treating diesel exhaust gas has: a flow-through substrate with 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 first coating disposed on the internal wall surface of the substrate, the surface defining the interface between the internal walls and passages, the first coating extending over 40 to 100% of the substrate axial length, the first coating having an 8-membered ring pore zeolitic material with copper and/or iron; a second coating extending over 20 to 100% of the substrate axial length, the second coating having a first oxidic material with titania, wherein at least 75 wt. % of the second coating is titania, calculated as TiO, and 0 to 0.01 wt. % of the second coating is vanadium oxides, calculated as VO.

SCR catalyst for the treatment of an exhaust gas of a diesel engine

The present invention relates to a catalyst, preferably for the selective catalytic reduction of NOx, for the oxidation of ammonia, for the oxidation of NO and for the oxidation of a hydrocarbon, the catalyst comprising a washcoat comprising one or more layers, the washcoat being disposed on a substrate, wherein the washcoat comprises a platinum group metal supported on a metal oxide support material, and one or more of an oxidic compound of V, an oxidic compound of W and a zeolitic material comprising one or more of Cu and Fe.

Tetra-functional catalyst for the oxidation of NO, the oxidation of a hydrocarbon, the oxidation of NH3 and the selective catalytic reduction of NO

The present invention relates to a selective catalytic reduction catalyst for the treatment of an exhaust gas of a diesel engine comprising (i) 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; (II) a coating disposed on the surface of the internal walls of the substrate, where-in the surface defines the interface between the passages and the internal walls, wherein the coating comprises a vanadium oxide supported on an oxidic material comprising titania, and further comprises a mixed oxide of vanadium and one or more of iron, erbium, bismuth, cerium, europium, gadolinium, holmium, lanthanum, lutetium, neodymium, praseodymium, promethium, samarium, scandium, terbium, thulium, ytterbium, yttrium, molybdenum, tungsten, manganese, cobalt, nickel, copper, aluminum and antimony.

Vanadium-based selective catalytic reduction catalyst

A catalyst composition comprising&#x2014;a support comprising TiO,&#x2014;a composite oxide containing vanadium and antimony, which has a rutile-type structure different from VSbOand VSbOas determined by X-ray diffraction (XRD) analysis with CuK&#x3b1; radiation, and&#x2014;optionally, one or more selected from the group consisting of oxides of silicon, oxides of vanadium and oxides of antimony, for selective catalytic reduction of nitrogen oxides; to a process for preparing the catalyst composition, to the catalyst composition obtained/obtainable by the process and to use of the same for selective catalytic reduction of nitrogen oxides.

Selective catalytic reduction (SCR) catalyst comprising a composite oxide containing V and SB, preparation process thereof, and use thereof for nitrogen oxides removal

The present invention relates to a catalytic article comprising a substrate having a catalyst composition disposed thereon, wherein the catalyst composition comprises a platinum group metal impregnated onto a porous support and a selective catalytic reduction catalyst, wherein the catalyst composition is substantially free of platinum; and wherein the catalytic article is effective in the abatement of nitrogen oxides (NOx) and hydrocarbons (HCs). The present invention further relates to exhaust gas treatment systems for treating an exhaust gas stream exiting a diesel engine.

Catalytic article and exhaust gas treatment systems

Described are base metal catalysts that comprise a base metal material in an amount effective to generate an exotherm over a temperature range of 300&#xb0; C. to 650&#xb0; C. and to oxidize soot collected by a downstream particulate filter. The base metal catalysts are substantially free of platinum group metals. Emission treatment systems and methods of remediating nitrogen oxides (NO), particulate matter, and gaseous hydrocarbons using base metal catalyst are also described.

Base metal catalyst

Described are SCR catalyst systems comprising a first SCR catalyst composition and a second SCR catalyst composition arranged in the system, the first SCR catalyst composition having a faster DeNOx response time when exposed to ammonia than the second catalyst composition and the second SCR catalyst composition has a higher steady state DeNOx performance than the first catalyst composition. The SCR catalyst systems are useful in methods and systems to catalyze the reduction of nitrogen oxides in the presence of a reductant.

Selective catalytic reduction catalyst system

Provided is a particulate filtration apparatus for removing combustible and noncombustible particulate matter from a lean burn engine exhaust gas stream containing particulate matter. The apparatus comprises a cyclone body with a roughened surface on the inner walls designed to trap and agglomerate the combustible particulate matter. A catalyst, selected from a selective catalytic reduction catalyst, an ammonia oxidation catalyst, a hydrolysis catalyst, an oxidation catalyst, a three-way catalyst, and combinations thereof can be coated on the roughened surface. Also provided is a system and methods for treating an exhaust gas stream.

Cyclone particulate filtration for lean burn engines

Provided are exhaust systems, components, and catalytic articles that have been passivated for use in conjunction with diesel engines that includes a NOx abatement system that uses a reductant. These items are passivated in order to minimize degradation of a reductant in their presence when, for example, they have been subjected to temperatures in excess of 650&#xb0; C.

Growing community of inventors

Hannover, Germany

Edgar Viktor Huennekes