Abstract: In accordance with one embodiment of the present invention, a catalyst system is provided. The catalyst system includes a catalyst bed that comprises a plurality of catalyst segments arranged such that an exhaust flow passes along a longitudinal axis of the catalyst system through the plurality of catalyst segments from a first one of the plurality of catalyst segments through a last one of the plurality of catalyst segments, each of the plurality of catalyst segments comprising a plurality of catalytic cells, wherein a concentration of catalytic material decreases from the first one of the plurality of catalyst segments through the last one of the plurality of catalyst segments.

Abstract: Method and apparatus for recovering and purifying a solvent used in an article cleaning appliance are provided. The method allows passing solvent-based cleaning fluid from a wash basket through a coarse filter configured to remove relatively large particulates from the cleaning fluid. The method further allows passing cleaning fluid from the coarse filter through a particulate filter configured to remove relatively fine particulates from the cleaning fluid. An aqueous phase that may be present in the cleaning fluid is separated by decanting and coalescing through a separator/filter assembly. The cleaning fluid may then be passed through a regeneration cartridge for removing any water that may remain in the cleaning fluid, and for adsorbing organic contaminants that may be present in the cleaning fluid. Recovered solvent may be stored in a tank for subsequent use in a cleaning process performed by the appliance.

Abstract: System and method for supplying reductants to an emission treatment system. The system includes a fuel tank adapted to supply a premixed fuel stream that includes a primary component and a reductant component, and an engine in fluid communication with the fuel tank, wherein the engine is configured to create an emission. The engine includes an emission treatment system to treat the emission. The system also includes a separation system that includes a membrane with differential permeability for the reductant component relative to the primary component. The separation system is configured to receive at least a portion of the premixed fuel stream from the tank and to separate the premixed fuel stream into a first fraction and a second fraction. The first fraction includes a higher concentration of the reductant component than the second fraction, and the separation system is configured to supply the first fraction to the emission treatment system.

Abstract: Disclosed is a catalyst system for the reduction of NOx. The catalyst system comprises a catalyst in a first zone comprising a catalyst support, a catalytic metal comprising gallium, and at least one promoting metal selected from the group consisting of silver, gold, vanadium, zinc, tin, bismuth, cobalt, molybdenum, tungsten, indium and mixtures thereof; a catalyst in the second zone following the first zone; the catalyst comprising a second catalyst support, a second catalytic metal selected from the group consisting of indium, copper, manganese, tungsten, molybdenum, titanium, vanadium, iron, cerium and mixtures thereof. The catalyst system further comprises a gas stream comprising an organic reductant comprising oxygen or nitrogen. The catalyst system may further optionally comprise a catalyst in a third zone following the second zone; the catalyst comprising a third catalyst support and a third catalytic metal selected from the group consisting of platinum, palladium, and mixtures thereof.

Abstract: A method comprises injecting a reductant stream comprising a hydrocarbon reductant and water into an exhaust chamber comprising a nitrogen oxide-containing exhaust stream; contacting a composition comprising the reductant stream and exhaust stream with a catalyst; and decreasing a concentration of the nitrogen oxide in the composition comprising the reductant stream and exhaust stream. An exhaust stream treatment system, comprises an exhaust chamber comprising a catalyst; an exhaust stream comprising a nitrogen oxide; and a reductant stream comprising a hydrocarbon reductant and water.

Abstract: Disclosed herein is a system for reducing NOx emissions comprising a fuel tank in fluid communication with a fuel converter, wherein the fuel converter is located down stream of the fuel tank and wherein the fuel converter comprises a catalyst composition that is operative to continuously convert heavy hydrocarbon molecules having 9 or more carbon atoms per molecule into light hydrocarbon molecules having 8 or less carbon atoms per molecule; a selective catalytic reduction catalyst reactor in fluid communication with the fuel converter and located downstream of the fuel converter; and an engine in fluid communication with the fuel tank and the selective catalytic reduction catalyst reactor, wherein the engine is located downstream of the fuel tank and upstream of the selective catalytic reduction catalyst reactor.

Abstract: The disclosed embodiments relate to a method and system for regeneration of a catalyst. The system includes an engine that creates an exhaust stream and a fuel supply adapted to supply a fuel stream to the engine. A reactor includes a catalyst and is in fluid communication with the engine to receive the exhaust stream. A sensor senses a system parameter and produces a signal corresponding to the system parameter. A controller receives the signal and directs at least a portion of the exhaust stream or at least a portion of the fuel stream to the catalyst to control a regeneration operation based on a value of the system parameter sensed by the sensor.

Abstract: The present invention provides methods and compositions for cleaning using dual phase wash solutions. The dual phase wash solutions comprise emulsions of polar and non-polar solvents with emulsifiers, surfactants and detergents. The methods of the present invention comprise the steps of charging an article to a washing machine comprising a washing drum, exposing the article in the wash drum to a wash solution comprising 0.125 to 20 percent water; a detergent comprising an ionic surfactant, a non-ionic surfactant and an emulsifier; and decamethylcyclopentasiloxane, agitating the article and wash solution in the washing drum, draining the wash solution from the drum, optionally, adding a rinse solution comprising substantially the same components as the wash solution; agitating the article in the rinse solution; and separating the rinse solution from the article by allowing the rinse solution to drain out of the drum and spinning the drum to drive off residual rinse solution through centrifugal force.

Abstract: A catalyst system for the reduction of NOx comprises a catalyst comprising a metal oxide catalyst support, a catalytic metal oxide comprising at least one of gallium oxide or silver oxide, and at least one promoting metal selected from the group consisting of silver, cobalt, molybdenum, tungsten, indium, bismuth and mixtures thereof. The catalyst system further comprises a gas stream comprising an organic reductant, and a compound comprising sulfur. A method for reducing NOx utilizing the said catalyst system is also provided.

Abstract: A catalyst system for the reduction of NOx comprises a catalyst comprising a metal oxide catalyst support, a catalytic metal oxide comprising at least one of gallium oxide or silver oxide, and at least one promoting metal selected from the group consisting of silver, cobalt, molybdenum, tungsten, indium and mixtures thereof. The catalyst system further comprises a gas stream comprising an organic reductant comprising oxygen. A method for reducing NOx utilizing the said catalyst system is also provided.

Abstract: A catalyst system comprising a catalyst and a reductant is disclosed. The catalyst comprises a metal oxide catalyst support, a catalytic metal oxide, and a promoting metal. The catalytic metal oxide comprises gallium oxide, indium oxide or a combination of the two. The promoting metal comprises at least one of silver, cobalt, vanadium, molybdenum, tungsten, zinc, tin and bismuth. The catalyst comprises about 5 to about 31 mol % catalytic metal oxide and about 0.5 to about 9 mol % promoting metal. The reductant comprises a fluid hydrocarbon having at least 4 carbon atoms. Also disclosed is a process for reducing NOx to N2 using the disclosed catalyst system by mixing NOx with a reductant and passing the mixture through a catalyst of the disclosed catalyst system.

Abstract: The present invention provides methods and compositions for cleaning using dual phase wash solutions. The dual phase wash solutions comprise emulsions of polar and non-polar solvents with emulsifiers, surfactants and detergents. The methods of the present invention comprise the steps of charging an article to a washing machine comprising a washing drum, exposing the article in the wash drum to a wash solution comprising 0.125 to 20 percent water; a detergent comprising an ionic surfactant, a non-ionic surfactant and an emulsifier; and decamethylcyclopentasiloxane, agitating the article and wash solution in the washing drum, draining the wash solution from the drum, optionally, adding a rinse solution comprising substantially the same components as the wash solution; agitating the article in the rinse solution; and separating the rinse solution from the article by allowing the rinse solution to drain out of the drum and spinning the drum to drive off residual rinse solution through centrifugal force.