Basf Corporation

Basf Mobile Emissions Catalysts LLC

Petra Cordes

Edgar Viktor Huennekes

Jan Martin Becker

Kevin Beard

Kevin David Beard

Joseph A Patchett

Nicholas Mcguire

Joseph Allan Patchett

Kenneth Edwin Voss

John K Hochmuth

Edith Schneider

Ruediger Wolff

Jaya L Lakshmi

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 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

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 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

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Hannover, Germany

Petra Cordes