A copper-CHA zeolite catalyst for SCR of NO.sub.x is disclosed.

The invention relates to a catalyst which comprises a carrier substrate, palladium, and a zeolite, the largest channels of which are formed by 10 tetradrically coordinated atoms; to the use of said catalyst as a passive nitrogen oxide adsorber, an exhaust gas system which contains said catalyst and an SCR catalyst, and to a method for purifying the exhaust gas of motor vehicles using said exhaust gas system.

The present invention relates to a device for treatment of material transported through the device having a specific design.

Novel multi-metal catalysts comprising abundant Earth metals are described herein. Devices comprising the catalysts of the invention are also described.

Methods of producing the catalysts are also described herein.

Methods of producing hydrogen using the catalysts of the invention are also described herein.

The present disclosure provides for and includes improved devices and methods for the production of Purified Hydrogen Peroxide Gas (PHPG) that is substantially non-hydrated and substantially free of ozone.

The invention relates to a structured catalyst for catalyzing steam methane reforming reaction in a given temperature range T upon bringing a hydrocarbon feed gas into contact with the structured catalyst. The structured catalyst comprises a macroscopic structure, which comprises an electrically conductive material and supports a ceramic coating. The macroscopic structure has been manufactured by 3D printing or extrusion and subsequent sintering, wherein the macroscopic structure and the ceramic coating have been sintered in an oxidizing atmosphere in order to form chemical bonds between the ceramic coating and the macroscopic structure. The ceramic coating supports catalytically active material arranged to catalyze the steam methane reforming reaction, wherein the macroscopic structure is arranged to conduct an electrical current to supply an energy flux to the steam methane reforming reaction. The invention moreover relates to methods of manufacturing the structured catalyst and a system using the structured catalyst.

A three-way catalyst article, and its use in an exhaust system for internal combustion engines, is disclosed. The catalyst article for treating exhaust gas comprising: a substrate; and a single catalyst layer deposited directly on the substrate; wherein the single catalyst layer comprises a first platinum group metal (PGM) component, an oxygen storage component (OSC) material, and an inorganic oxide; and wherein the single catalyst layer has a total washcoat loading of less than 2.4 g/in.sup.3.

The present disclosure belongs to the technical field of catalysis, and particularly relates to a metal oxide coated ceramic corrugated plate catalyst, its preparation method and application thereof in preparation of key intermediates of citral. The catalyst consists of a ceramic corrugated plate carrier and a metal oxide active layer coated on a surface of the carrier, wherein the metal oxide active layer is a metal oxide formed by active ingredient titanium and at least four other metal elements selected from vanadium, chromium, manganese, iron, zirconium, niobium and molybdenum.

The present disclosure relates to a catalyst for directly decomposing urea, a method for preparing the same and a system for decomposing urea including the same, whereby the efficiency of decomposing urea to ammonia may be improved while preventing the formation of a byproduct such as biuret at temperatures of 200 C. or below by controlling the oxygen composition of the catalyst including titania and ceria.

A catalyst unit for purifying flue gas, comprising a plurality of platy catalyst elements, wherein the platy catalyst element comprises one flat plate portion and one wavy plate portion, the wavy plate portion has ridges and thalwegs, the platy catalyst elements are stacked each other so that a top of the ridges of the wavy plate portion in one of the platy catalyst elements is in contact with the flat plate portion of another adjacent of the platy catalyst elements and the wavy plate portion secures gas flow paths, the flat plate portion and the wavy plate portion are respectively quadrilateral in view image from normal direction relative to a main face thereof, an edge of the flat plate portion and an edge of the wavy plate portion are connected, and a number of the ridges and a number of the thalwegs are totally not less than 4.