Abstract: A catalytic device that can increase the durability of a catalyst support with holes is provided. A flat plate and a corrugated plate have a plurality of holes, a joint area between the flat plate and the corrugated plate is provided in a first upstream area including one end of a catalyst support, and a joint area between the catalyst support and an outer cylinder is provided in a second upstream area that includes the first upstream area and is wider than the first upstream area in the direction of an axis.

Abstract: A catalytic device that can increase the durability of a catalyst support with holes is provided. A flat plate (52) and a corrugated plate (54) have a plurality of holes (64), a joint area between the flat plate (52) and the corrugated plate (54) is provided in a first upstream area (70) including one end (42a) of a catalyst support (42), and a joint area between the catalyst support (42) and an outer cylinder (44) is provided in a second upstream area (72) that includes the first upstream area (70) and is wider than the first upstream area (70) in the direction of an axis.

Abstract: An exhaust-gas treatment unit includes: a supply line, for exhaust gas, having an entry opening and an exit opening, and a first exhaust-gas treatment body into which the exhaust gas flows through the entry opening and out of which the exhaust gas exits at the exit opening; a housing into which the supply line extends via the exit opening, the housing forming an intermediate space around the supply line; an outlet space in the housing being arranged laterally with respect to the supply line; and a dividing device arranged between the intermediate space and the outlet space. The intermediate space is configured such that the exhaust gas passes out of the intermediate space and is divided into at least two partial streams which, in the direction of the outlet space, are conducted into the outlet space in opposite directions by at least two openings formed by the dividing device.

Abstract: An exhaust-gas treatment unit includes: a supply line, for exhaust gas, having an entry opening and an exit opening, and a first exhaust-gas treatment body into which the exhaust gas flows through the entry opening and out of which the exhaust gas exits at the exit opening; a housing into which the supply line extends via the exit opening, the housing forming an intermediate space around the supply line; an outlet space in the housing being arranged laterally with respect to the supply line; and a dividing device arranged between the intermediate space and the outlet space. The intermediate space is configured such that the exhaust gas passes out of the intermediate space and is divided into at least two partial streams which, in the direction of the outlet space, are conducted into the outlet space in opposite directions by at least two openings formed by the dividing device.

Abstract: Porous materials are disclosed for use in the catalytic conversion of exhaust gases comprising a carrier including a first porous structure, an oxidation catalyst capable of catalyzing the oxidation of NO to NO2 in the presence of oxygen and catalyzing the oxidation of reducing agent, the oxidation catalyst enclosed within the first porous structure, the first porous structure including pores having dimensions such that the reducing agent is substantially prevented from contacting the oxidation catalyst, whereby the oxidation catalyst primarily catalyses the oxidation of NO to NO2 as compared to oxidation of the reducing agent during the catalytic conversion of the exhaust gases. Methods for catalytic conversion or exhaust gases using these materials are also disclosed.