Abstract: A catalyst for adsorbing oxides of nitrogen from the exhaust gases of an internal combustion engine, comprising an alkaline earth active catalyst site, and a transition metal oxide having a surface area of at least about 75 m2 /g.

Abstract: A multiple zeolite catalyst mixture for purifying exhaust gases from an internal combustion engine, comprising: a first NO2 to N2 to conversion catalyst component; a second O3 conversion catalyst component; a third HC conversion catalyst component; a fourth N2O decomposition catalyst component; and, a fifth VOC reduction catalyst component; wherein the catalyst component mixture includes about 50 to 75 weight percent of the first and second catalyst components, and about 25 to 50 weight percent of the third, fourth, and fifth catalyst components.

Abstract: A method for preparing a non-thermal plasma reactor substrate includes disposing electrical vias on green stage first and second ceramic plates; filling the electrical vias with conductive material; and forming electrical contact via cover pads; disposing conductive material on the first ceramic plate to form an electrode plate having a main electrode portion and a terminal lead for electrically connecting the main electrode portion to the electrical vias; laminating the electrode plate and the second ceramic plate together, embedding the electrode therebetween; co-firing the plates to form a laminated co-fired embedded-conductor element; stacking a plurality of the laminated co-fired embedded-conductor elements to form a multi-cell stack, the filled electrical vias aligning in the stack to provide an electrical bus for connecting alternating elements in the stack; and disposing spacers with matching vias and via cover pads between adjacent pairs of elements to form exhaust gas passages.

Abstract: A system and method for treating a combustion exhaust stream includes admitting an exhaust stream into a non-thermal plasma reactor having at least one segmented non-thermal plasma element. The segmented element includes plurality of individually energizable electrode segments defining a plurality of corona volumes. In a preferred embodiment, the electrode segments are progressively smaller in size in the exhaust flow direction to provide optimum plasma volume variation. Individually energizable electrodes are selectively activated to effect variable corona volumes for treating an exhaust stream. Additional reactor segments are activated only as needed, such as during periods of high exhaust flow, for efficient treatment of the exhaust stream so as to maintain optimized high space velocity in the active corona volume.

Abstract: A catalyst for treating an exhaust gas stream comprising an alkaline earth/transition metal oxide component in combination with an alkaline earth/support component.

Abstract: A catalyst for treating an exhaust gas stream comprising a NOx occluding catalyst structure having an outer layer comprising an alkaline earth component and a rare earth component.

Abstract: A catalyst for treating an exhaust gas stream comprising an alkali metal oxide component in combination with an alkaline earth/support component.

Abstract: A non-thermal plasma (NTP) reactor structural conductor element includes a base conductor support and a high dielectric constant (“high k”) barrier layer supported by and substantially surrounding the base conductor support to forma structural conductor NTP reactor element. The structural conductor element may comprise a variety of shapes such as plates, sheets, half-box, I shapes, C shapes, or comb shapes, among others.

Abstract: A catalyst for adsorbing oxides of nitrogen from the exhaust gases of an internal combustion engine, comprising an alkaline earth active catalyst site, and a transition metal oxide having a surface area of at least about 75 m2/g.

Abstract: A catalyst for treating an exhaust gas stream comprising an alkaline earth/transition metal oxide component in combination with an alkaline earth/support component.

Abstract: An improved nitrogen oxide catalyst for use with catalytic converters comprises a substrate material comprising a catalyst, an adsorption material layer, and an organometallic precursor comprising an organometallic precursor material and a nitrogen oxide adsorber catalyst material. The organometallic precursor reacts with a base metal oxide present in the catalyst and decomposes upon application to the substrate material, leaving a nitrogen oxide adsorption catalyst material in the adsorption material layer.

Abstract: A NOx, catalyst combination for treating a lean exhaust gas stream comprising an alkaline earth-alumina catalyst and an alkaline earth-zeolite catalyst, arranged on a substrate such that the gas stream first contacts the alkaline earth-alumina catalyst prior to contacting the alkaline earth-zeolite catalyst.

Abstract: A poison resistant lean NOx catalyst comprising:

Abstract: A poison resistant lean NOx catalyst comprising: a protective coating of a first catalyst support material including a metal-zirconium phosphate component, coated on a second NOx occluding catalyst material.

Abstract: A multiple zeolite catalyst mixture for purifying exhaust gases from an internal combustion engine, comprising: a first NO2 to N2 to conversion catalyst component; a second O3 conversion catalyst component; a third HC conversion catalyst component; a fourth N2O decomposition catalyst component; and, a fifth VOC reduction catalyst component; wherein the catalyst component mixture includes about 50 to 75 weight percent of the first and second catalyst components, and about 25 to 50 weight percent of the third, fourth, and fifth catalyst components.

Abstract: A NOx control for an exhaust is provided. The NOx control includes a nickel compound and a NOx adsorber. The NOx adsorber is suitable for a high oxygen content exhaust, such as an exhaust from a compression-ignition engine or a lean-burn spark-ignition engine having oxygen content greater than about 1 molar % based on the total exhaust. Systems for treating an exhaust gas are also provided, including use of a non-thermal plasma reactor and a NOx control, or use of a first non-thermal plasma reactor, a particulate trap, a second non-thermal plasma reactor, and a NOx control. Additionally, methods for forming a NOx control are also described, comprising either mixing, milling, or sintering a nickel compound integrally with a NOx adsorber, or processing a nickel compound with a NOx adsorber by mixing, milling, or sintering, washcoating, imbibing, impregnating, physisorbing, chemisorbing, precipitating, vapor depositing, or any combination of at least one of the foregoing processing techniques.

Abstract: A poison resistant lean NOx catalyst comprising: a protective coating of a first catalyst support material including a metal-zirconium phosphate component, coated on a second NOx occluding catalyst material.