Abstract: The present invention provides a method for treating a used particulate filter, comprising: removing particulates from the particulate filter; and introducing simulated ash into inlet channels of the particulate filter after removing the particulates.

Abstract: The present invention relates to a catalyst, preferably for the selective catalytic reduction of NOx, for the oxidation of ammonia, for the oxidation of NO and for the oxidation of a hydrocarbon, the catalyst comprising a washcoat comprising one or more layers, the washcoat being disposed on a substrate, wherein the washcoat comprises a platinum group metal supported on a metal oxide support material, and one or more of an oxidic compound of V, an oxidic compound of W and a zeolitic material comprising one or more of Cu and Fe.

Abstract: The present invention relates to a diesel oxidation catalyst comprising a substrate and a wash-coat comprising a first layer and a second layer, wherein the substrate has a substrate length, a front end and a rear end, the washcoat comprising the first layer comprising a first metal oxide and comprising a platinum group metal supported on a metal oxide support material; the second layer comprising a second metal oxide and comprising one or more of an oxidic compound of vanadium, an oxidic compound of tungsten and a zeolitic material comprising one or more of Fe and Cu; wherein the first layer is at least partially disposed directly on the substrate, or is at least partially disposed directly on an intermediate layer which is disposed directly on the substrate over the entire length of the substrate, on x % of the length of the substrate from the front end of the substrate, and wherein the second layer is at least partially disposed directly on the substrate, or is at least partially disposed directly on the i

Abstract: 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.

Abstract: 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.

Abstract: The present invention relates to a diesel oxidation catalyst comprising a substrate and a wash-coat comprising a first layer and a second layer, wherein the substrate has a substrate length, a front end and a rear end, the washcoat comprising the first layer comprising a first metal oxide and comprising a platinum group metal supported on a metal oxide support material; the second layer comprising a second metal oxide and comprising one or more of an oxidic compound of vanadium, an oxidic compound of tungsten and a zeolitic material comprising one or more of Fe and Cu; wherein the first layer is at least partially disposed directly on the substrate, or is at least partially disposed directly on an intermediate layer which is disposed directly on the substrate over the entire length of the substrate, on x % of the length of the substrate from the front end of the substrate, and wherein the second layer is at least partially disposed directly on the substrate, or is at least partially disposed directly on the i

Abstract: The present invention relates to a catalyst, preferably for the selective catalytic reduction of NOx, for the oxidation of ammonia, for the oxidation of NO and for the oxidation of a hydrocarbon, the catalyst comprising a washcoat comprising one or more layers, the washcoat being disposed on a substrate, wherein the washcoat comprises a platinum group metal supported on a metal oxide support material, and one or more of an oxidic compound of V, an oxidic compound of W and a zeolitic material comprising one or more of Cu and Fe.

Abstract: Described are base metal catalysts that comprise a base metal material in an amount effective to generate an exotherm over a temperature range of 300° C. to 650° C. and to oxidize soot collected by a downstream particulate filter. The base metal catalysts are substantially free of platinum group metals. Emission treatment systems and methods of remediating nitrogen oxides (NOx), particulate matter, and gaseous hydrocarbons using base metal catalyst are also described.

Abstract: Described are base metal catalysts that comprise a base metal material in an amount effective to generate an exotherm over a temperature range of 300° C. to 650° C. and to oxidize soot collected by a downstream particulate filter. The base metal catalysts are substantially free of platinum group metals. Emission treatment systems and methods of remediating nitrogen oxides (NOx), particulate matter, and gaseous hydrocarbons using base metal catalyst are also described.

Abstract: Provided are exhaust systems, components, and catalytic articles that have been passivated for use in conjunction with diesel engines that includes a NOx abatement system that uses a reductant. These items are passivated in order to minimize degradation of a reductant in their presence when, for example, they have been subjected to temperatures in excess of 650° C.

Abstract: Provided are exhaust systems, components, and catalytic articles that have been passivated for use in conjunction with diesel engines that includes a NOx abatement system that uses a reductant. These items are passivated in order to minimize degradation of a reductant in their presence when, for example, they have been subjected to temperatures in excess of 650° C.