Abstract: A faujasite-type zeolite has an IR spectrum in which the IR spectrum has an absorption band 1 including surface silanol groups and having a local maximum in a range from 3730 cm?1 to 3760 cm?1, and an absorption band 2 including acidic hydroxyl groups and having a local maximum in a range from 3550 cm?1 to 3700 cm?1, a ratio (h1/h2) of a peak height (h1) of the absorption band 1 to a peak height (h2) of the absorption band 2 being less than 1.2.

Abstract: A lower olefin producing catalyst which has high olefin production efficiency and maintains its activity for a long period of time when lower olefins are produced from an oxygen-containing compound, which is a solid catalyst used in producing lower olefins from an oxygen-containing compound, includes a solid-state catalyst component containing an MFI-type zeolite, in which, at a position where the shortest distance to the outer surface is maximum among all positions inside a structure of the solid catalyst, the thickness defined as a distance twice the shortest distance from the point to the outer surface is in a range of from 0.1 to 2.0 mm, and a method for producing lower olefins.

Abstract: An alkaline-earth metal compound-containing zeolite catalyst composed of a composite material comprising at least a first component, a second component, and a third component. The first component is composed of at least one of zeolites selected from a group consisting of proton-type zeolites and ammonium type zeolites. The second component is composed of at least one of alkaline-earth metal compounds. The third component is composed of at least one selected from a group consisting of aluminum oxides, aluminum hydroxides, silicon oxides, silicon hydroxides, and clay minerals. The first component has a molar ratio of Si/Al of 10 or more and 300 or less. Content of the second component relative to the first component is 0.3 mass % or more and less than 10 mass % as alkaline-earth metal. Content of the third component relative to the first component is 15 mass % or more and 200 mass % or less.

Abstract: An alkaline-earth metal compound-containing zeolite catalyst composed of a composite material comprising at least a first component, a second component, and a third component. The first component is composed of at least one of zeolites selected from a group consisting of proton-type zeolites and ammonium type zeolites. The second component is composed of at least one of alkaline-earth metal compounds. The third component is composed of at least one selected from a group consisting of aluminum oxides, aluminum hydroxides, silicon oxides, silicon hydroxides, and clay minerals. The first component has a molar ratio of Si/Al of 10 or more and 300 or less. Content of the second component relative to the first component is 0.3 mass % or more and less than 10 mass % as alkaline-earth metal. Content of the third component relative to the first component is 15 mass % or more and 200 mass % or less.

Abstract: There are provided a catalyst for manufacturing propylene, which can keep stable activity for a prolonged period of time in manufacturing propylene by bringing an oxygen-containing compound into contact with the catalyst in the presence of an olefin having 4 or more carbon atoms, and a method for manufacturing propylene using this catalyst for manufacturing propylene.

Abstract: A lower olefin producing catalyst which has high olefin production efficiency and maintains its activity for a long period of time when lower olefins are produced from an oxygen-containing compound, which is a solid catalyst used in producing lower olefins from an oxygen-containing compound, includes a solid-state catalyst component containing an MFI-type zeolite, in which, at a position where the shortest distance to the outer surface is maximum among all positions inside a structure of the solid catalyst, the thickness defined as a distance twice the shortest distance from the point to the outer surface is in a range of from 0.1 to 2.0 mm, and a method for producing lower olefins.

Abstract: An alkaline-earth metal compound-containing zeolite catalyst composed of a composite material comprising at least a first component, a second component, and a third component, wherein the first component is composed of at least one of zeolites selected from a group consisting of proton-type zeolites and ammonium type zeolites, the second component is composed of at least one of alkaline-earth metal compounds, and the third component is composed of at least one selected from a group consisting of aluminum oxides, aluminum hydroxides, silicon oxides, silicon hydroxides, and clay minerals. The first component has a molar ratio of Si/Al of 10 or more and 300 or less. Content of the second component relative to the first component defined is 0.3 mass % or more and less than 10 mass % as alkaline-earth metal. Content of the third component relative to the first component is 15 mass % or more and 200 mass % or less.

Abstract: In a process for production of lower hydrocarbons from dimethyl ether and/or methanol and an apparatus for the production, the object is; to increase the selectivity of the reaction product to thereby produce a target product at a high final yield, to prolong the catalyst lifetime, and to improve the safety in the operation of the apparatus. An apparatus to be used includes: a reactor 2 which reacts dimethyl ether and/or methanol in the presence of a catalyst to produce lower hydrocarbons; a separator 4 which separates ethylene from lower hydrocarbons from the reactor 2; and a converter 6 which converts the ethylene separated by the separator 4 into a hydrocarbon having 4 or more carbon atoms, and feeds this hydrocarbon into the upstream or downstream of the reactor 2.