Methods and systems are provided for an emissions aftertreatment device. In one example, the emissions aftertreatment device may include a catalyst and a high entropy oxygen storage material formed of at least five metal oxides in equal molar proportions. The at least five metal oxides includes one or more rare earth metals as well as other metals with similar chemical properties as the rare earth metals.

A catalyst-containing material includes a refractory matrix and particles of one or more catalytic metal elements or catalytic oxides. The particles are dispersed through, and embedded in, the refractory matrix.

The present invention relates to a suspension of nanoparticles of a mixed oxide based on cerium and zirconium. It also relates to the use of said suspension for the preparation of a catalysed gasoline particulate filter.

A method of manufacturing a catalyst intermediate is provided. The method comprises: providing a slurry comprising a hydrous oxide of one or more of aluminium, cerium and zirconium; and contacting the slurry comprising a hydrous oxide with platinum group metal (PGM) ions to provide a PGM-containing slurry.

A method of manufacturing a catalyst intermediate is provided. The method comprises: providing a slurry comprising a hydrous oxide of one or more of aluminium, cerium and zirconium; and contacting the slurry comprising a hydrous oxide with platinum group metal (PGM) ions to provide a PGM-containing slurry.

Catalysts, catalytic materials having catalysts present on supports and catalytic methods are provided. The catalysts, catalytic material and methods are useful in a variety of catalytic reactions, for example, the oxidative coupling of methane.

Catalysts, catalytic materials having catalysts present on supports and catalytic methods are provided. The catalysts, catalytic material and methods are useful in a variety of catalytic reactions, for example, the oxidative coupling of methane.

A catalyst for synthesizing a conjugated diene from a raw material including an alcohol, which includes at least Ce and Zn as metal elements constituting the catalyst. An apparatus for producing a conjugated diene, including: a reaction tube (1) provided with the catalyst; a supply means for supplying a raw material gas containing the raw material into the reaction tube (1); and an outlet means for releasing a product from the reaction tube (1). A method for producing a conjugated diene, including contacting a raw material gas containing a raw material with the catalyst to obtain a conjugated diene. The amount of the raw material is preferably 10 to 50% by volume (in terms of gas volume) with respect to 100% by volume (in terms of gas volume) of the raw material gas.

A catalyst for synthesizing a conjugated diene from a raw material including an alcohol, which includes at least Ce and Zn as metal elements constituting the catalyst. An apparatus for producing a conjugated diene, including: a reaction tube (1) provided with the catalyst; a supply means for supplying a raw material gas containing the raw material into the reaction tube (1); and an outlet means for releasing a product from the reaction tube (1). A method for producing a conjugated diene, including contacting a raw material gas containing a raw material with the catalyst to obtain a conjugated diene. The amount of the raw material is preferably 10 to 50% by volume (in terms of gas volume) with respect to 100% by volume (in terms of gas volume) of the raw material gas.

The present invention relates to a catalyst which is a composite oxide including at least one element X selected from the group consisting of elements belonging to Groups 3 to 6 of the periodic table, and at least one element Z selected from the group consisting of elements belonging to Group 14 of the periodic table, wherein the catalyst has mesopores.