1
Rainer Domesle, Ulrich Göbel, Lothar Mussmann, Egbert Lox, Thomas Kreuzer: Catalyst material. Degussa Huls Aktiengessellschaft, Kalow & Springut, November 5, 2002: US06475951 (65 worldwide citation)

A powdered catalyst material based on aluminum oxide, which contains at least one basic metal oxide and at least one noble metal from the platinum group of the Periodic Table of Elements in addition to aluminum oxide. The catalyst material is obtainable by loading a support material already stabiliz ...


2
Lutz Marc Ruwisch, Ulrich Göbel, Juliane Theis, Rainer Domesle: Catalyst for lowering the amount of nitrogen oxides in the exhaust gas from lean burn engines. Umicore & Co KG, Kalow & Springut, February 22, 2005: US06858193 (27 worldwide citation)

The invention relates to a catalyst for lowering the amount of NOx in the lean exhaust gas from lean burn engines, comprising active aluminum oxide, magnesium oxide and at least one noble metal of the platinum group of the periodic table of the elements, as well as at least one nitrogen oxide storag ...


3

4
Wolfgang Strehlau, Ulrich Göbel, Lothar Mussmann, Rainer Domesle: Nitrogen oxide storage material and nitrogen oxide storing catalyst prepared therefrom. dmc 2 Degussa Metals Catalysts Cerdec, Smith Gambrell & Russell, February 26, 2002: US06350421 (25 worldwide citation)

A nitrogen oxide storage material is disclosed which contains at least one storage component for nitrogen oxides in the form of an oxide, mixed oxide, carbonate or hydroxide of the alkaline earth metals magnesium, calcium, strontium and barium and the alkali metals potassium and caesium on a high su ...


5
Wolfgang Strehlau, Ulrich Göbel, Rainer Domesle: Nitrogen oxide storage catalyst. OMG & Co KG, David Kalow, Pillsbury Winthrop, July 2, 2002: US06413904 (19 worldwide citation)

A nitrogen oxide storage catalyst which contains at least one catalyst material and at least one nitrogen oxide storage component from the group of alkali and alkaline earth metals. The nitrogen oxide storage component, after completing catalyst preparation, is present as finely divided barium sulfa ...


6
Ulrich Göbel, Lutz Marc Ruwisch, Ralph Kiessling, Martin Foerster: Method for producing a nitrogen oxide storage material and a storage material made with it. Degussa Huls Aktiengesellschaft, Kalow & Springut, August 5, 2003: US06602820 (16 worldwide citation)

A method for producing a nitrogen oxide storage material that contains at least one storage component in the form of particles of an oxide, carbonate or hydroxide of the elements magnesium, strontium, barium, lanthanum and cerium on a carrier material from the group consisting of doped cerium oxide, ...


7
Wolfgang Strehlau, Lothar Mussmann, Ulrich Göbel: Process for evaluating performance deterioration of a nitrogen oxide storage catalyst. Degussa, Smith Gambrell & Russell, April 17, 2001: US06216449 (13 worldwide citation)

A process for evaluating performance deterioration of a nitrogen oxide storage catalyst which has a nitrogen oxide storage function and an oxygen storage function and is operated with cyclic alternation of the air/fuel ratio in the exhaust gas from lean to rich. The nitrogen oxides are stored during ...


8
Ulrich Göbel, Lutz Marc Ruwisch, Egbert Lox, Thomas Kreuzer: Process for checking the operatability of a nitrogen oxide storage catalyst. DMC2 DeGussa Metals Catalysts Cerdec, Kalow & Springut, February 3, 2004: US06684628 (9 worldwide citation)

The present invention provides processes for checking the operability of a nitrogen oxide storage catalyst during operation of a lean burn engine. The processes of the present invention utilize a nitrogen oxide storage material, a catalytically active component and optionally an oxygen storage mater ...


9
Adolf Schäfer Sindlinger, Wolfgang Strehlau, Egbert Lox, Thomas Kreuzer, Ulrich Göbel: Process and device for removing soot from the exhaust gas of a diesel engine. Degussa Huls Aktiengesellschaft, Kalow & Springut, February 11, 2003: US06516611 (9 worldwide citation)

A process for removing soot from the exhaust gas of a diesel engine by oxidizing the nitrogen monoxide present in the exhaust gas to nitrogen dioxide, separating the soot from the exhaust gas stream and oxidizing the soot using the nitrogen dioxide produced. The process is performed in at least two ...