A passive NOx absorber for treating an exhaust gas from a diesel engine is described. The passive NOx absorber comprises a first washcoat region comprising a zeolite catalyst, the zeolite catalyst comprising a noble metal and a zeolite having a SAR of 2-15.

An automotive exhaust system includes an exhaust pipe and a catalytic converter. The catalytic converter includes a catalyst in fluid communication with the exhaust pipe, and an electric heater between the exhaust pipe and the catalyst. The electric heater includes a cellular structure that defines a plurality of smaller and larger cells. The smaller cells occupy a contiguous half of the cellular structure.

A catalytic converter system having oxygen storage materials is disclosed and methods for determining whether to reactivate oxygen storage materials and monitoring failure events of the oxygen storage materials are also disclosed.

A heater element with a functional material-containing layer includes: a honeycomb structure including an outer peripheral wall and partition walls disposed on an inner side of the outer peripheral wall, the partition walls defining a plurality of cells, each of the cells extending from a first end face to a second end face to form a flow path, at least the partition walls being made of a material having a PTC property; a pair of electrodes provided on the first end face and the second end face of the honeycomb structure; and a functional material-containing layer provided on a surface of the partition walls.

An improved apparatus for the separation of gas or gas-vapor, as well as simultaneous product transformation or conversion of one or more of the separated gas or gas-vapor species, includes modification of a Ranque-Hilsch vortex tube to include an electric field internal to the vortex tube, created either by an applied potential or induced by temperature-dependent triboelectric effects, or a combination of both. The electric field is used to enhance separation of gaseous components, with particular emphasis on separation of CO.sub.2 from a gaseous mixture, and to promote subsequent conversion of the resulting separated gaseous product or products.

A device (1) and a method for producing enameled wires, comprises an application device (3) for applying at least one enamel coating, a furnace (4) for solidifying the enamel coating and an exhaust gas purification device (7) for removing at least nitrogen oxides from an exhaust gas (9) of the furnace (4). The exhaust gas purification device (7) has a unit (13) for the selective catalytic reduction of nitrogen oxides in the exhaust gas (9) of the furnace and a feeding apparatus (11) for feeding a reducing agent, preferably an ammonia-containing compound, in particular a urea solution, into the exhaust gas (9) of the furnace (4). The feeding apparatus (11) has at least one outlet opening, which is designed in such a way that the reducing agent exits from the outlet opening substantially in the flow direction of the exhaust gas (9).

An exhaust gas purification catalyst device including a substrate and an SCR catalyst layer on the substrate, the substrate containing catalyst precious metal particles directly supported on the substrate, the catalyst precious metal particles containing Pt, and the catalyst precious metal particles having an average particle diameter of 30 to 120 nm inclusive.

A compact lightweight air filtration system is disclosed. The air filtration system includes a hydrophobic particulate/coalescing filter and a cleanable ozone converter housed in a housing with an inlet and an outlet. Air flowing from the inlet to the outlet passes through the particulate/coalescing filter element and then the cleanable ozone converter to remove particulates, aerosols, liquids, and ozone. The air filtration system may comprise a fuel tank inerting system (FTIS) filter assembly. The FTIS filter assembly may include a binderless media (no binder) suitable for use in high temperatures. The FTIS filter assembly includes a catalytic converter configured to adsorb one or more VOCs, such as Toluene, Propylene Glycol (C.sub.3H.sub.8O.sub.2), Pentanoic Acid, Butane (C.sub.4H.sub.10), Formaldehyde (CH.sub.2O), and Carbon Dioxide (CO.sub.2).

The present invention relates to a zeolite comprising zinc and platinum, and to a catalyst containing said zeolites.

The present invention relates to a process for preparing a catalyst for the selective catalytic reduction of nitrogen oxide comprising, among other steps, preparing a second aqueous mixture comprising water and an iron salt; and disposing the second mixture on the substrate obtained according to (ii), comprising a coating comprising a zeolitic material comprising copper, over y % of the substrate axial length from the inlet end to the outlet end of the substrate, wherein y is in the range of from 10 to x, obtaining a substrate comprising, in a first zone, the coating comprising a zeolitic material comprising copper and over y % of the substrate axial length an iron salt; and, if x > y, in a second zone extending from y % to x % of the substrate axial length from the inlet end to the outlet end, the coating comprising a zeolitic material comprising copper.