Basf Corporation

Engelhard Corporation

Basf Catalysts LLC

Other

Basfd Catalysts LLC

Joseph Allan Patchett

Joseph Charles Dettling

Elizabeth Alina Przybylski

Ahmad Moini

Gerald Stephen Koermer

Ivor Bull

William Michael Jaglowski

Patrick L Burk

Wen-Mei Xue

R Samuel Boorse

Matthew Tyler Caudle

Karl Richard Grimston

Stanley Allen Roth

Gary Wayne Rice

John Lawrence Calabrese

Rudolfus Petrus Verbeek

Edgar Viktor Huennekes

Michel Deeba

Barry Keven Speronello

Yuejin Li

Kevin David Beard

Ramesh M Kakwani

John M Nugent

Mathijs Van Genderen

Kenneth C Voss

Kenneth Edwin Voss

Xinyi Wei

Kevin A Hallstrom

Robert Dorner

Jan Martin Becker

Martin Kalwei

Petra Cordes

Ansgar Wille

Edgar V Hünnekes

Samuel Boorse

Mathus Van Genderen

Stanley Allan Roth

W Jaglowski

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 invention is directed to selective catalytic reduction catalysts that combine SCR activity with NOx absorber activity. In particular, the disclosed catalytic article includes a substrate having a first and a second material disposed thereon, wherein the first material includes a selective catalytic reduction (SCR) catalyst composition and the second material includes a nitrogen oxides (NOx) absorber composition, wherein the NOx absorber composition does not substantially oxidize ammonia, and wherein the catalytic article is effective to abate NOx from an engine exhaust gas stream. Emission treatment systems for treating an exhaust gas including a catalytic article of the invention are provided, particularly systems that include an injector adapted for the addition of ammonia to the exhaust gas stream located upstream of the catalytic article.

Combined NOx absorber and SCR catalyst

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

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

Provided is a catalyst article for simultaneously remediating the nitrogen oxides (NOx), particulate matter, and gaseous hydrocarbons present in diesel engine exhaust streams. The catalyst article has a soot filter coated with a material effective in the Selective Catalytic Reduction (SCR) of NOx by a reductant, e.g., ammonia.

Catalyzed SCR filter and emission treatment system

Method for disposing SCR composition on a wall flow monolith

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

Growing community of inventors

Basking Ridge, NJ, United States of America

Joseph Allan Patchett