Abstract: Provided is a method for producing a beta zeolite, the method including bringing a beta zeolite parent powder synthesized without using an organic structure-directing agent into contact with an alkaline aqueous solution having a pH of 12 or higher. The liquid temperature of the alkaline aqueous solution is preferably se to 40° C. or above and 100° C. or below. The ratio of the parent powder to the alkaline aqueous solution is preferably set to 10 g/L or greater and 1000 g/L or less. The contact time is preferably 0.5 hours or longer and 48 hours or shorter. The SiO2/Al2O3 molar ratio is preferably s16 or less.

Abstract: The present disclosure relates to a process for the preparation of a zeolitic material having a CHA-type framework structure comprising YO2 and X2O3, wherein the process comprises: (1) providing a mixture comprising one or more sources for YO2, one or more sources for X2O3, one or more tetraalkylammonium cation R1R2R3R4N+-containing compounds, and one or more tetraalkylammonium cation R5R6R7R8N+-containing compounds as structure directing agent; (2) crystallizing the mixture to obtain a zeolitic material having a CHA-type framework structure; wherein Y is a tetravalent element and X is a trivalent element, wherein R1, R2, R3, R5, R6, and R7 independently from one another stand for alkyl, wherein R4 stands for CnH2nOH with n=1 to 6, and wherein R8 stands for cycloalkyl.

Abstract: Provided is a production method with which it is possible to produce beta zeolite at high purity by suppressing the generation of impurities by a seed crystal addition method that can reduce the environmental burden as much as possible, without using an organic structure-directing agent. This method for producing beta zeolite having a step that mixes and heats an organic-compound-free reaction mixture comprising a silica source, alumina source, alkali source, and water with beta zeolite seed crystals, wherein (I) beta zeolite synthesized without using an organic structure-directing agent and having 90% or more by volume of particles 10 ?m or less in diameter in the particle size distribution by a laser diffraction scattering-type particle size distribution measurement method is used, (III) acid-treated zeolite in which the SiO2/Al2O3 ratio is 150 or less is prepared by (II) contact treatment with an acidic aqueous solution, and the acid-treated zeolite is used as the beta zeolite seed crystals.

Abstract: A vehicle seat including: a seat body on which an occupant is capable of sitting, the seat body including a seat heater including a heater wire, wherein the heater wire of the seat heater constitutes a bent member having a predetermined shape, the bent member being obtained by bending the heater wire, and wherein the bent member is pulled and the predetermined shape of the bent member is deformed as pressure applied to a seat surface of the seat body increases, so that a density of the heater wire per unit area of the seat surface decreases.

Abstract: Provided is a mordenite zeolite which can be produced without using an organic structure-directing agent, and has superior multivalent metal cation exchange capability. The mordenite zeolite according to the present invention containing silicon, a divalent metal M and aluminum in a skeletal structure, wherein the mordenite zeolite has the following atomic ratios in the state of Na-form. The mordenite zeolite preferably has a BET specific surface area of 250 m2/g or more and 500 m2/g or less and a micropore volume of 0.07 cc/g or more and 0.25 cc/g or less in the state of Na-form or H-form. Si/(M+Al)=5 or more and 10 or less, M/(M+Al)=0.1 or more and less than 1, and Na/(M+Al)=1 or more and less than 2.

Abstract: In a vehicle seat, a movable frame provided at a front end portion of a stationary frame is slidable frontward and rearward, and an outer covering is provided to extend frontward from an upper side of the stationary frame and configured to wrap around a front end portion of the movable frame. Engageable members are provided to extend along the left and right end portions of the outer covering. The movable frame has grooves extending from an upper surface, through a front surface and to an undersurface thereof. The engageable members are engageable in the grooves. Each groove includes a first groove section, and a second groove section extending from the first groove section in a direction different from a direction in which the first groove section extends. Each engageable member includes a body portion extending from the outer covering and a claw portion extending from the body portion.

Abstract: The purpose of the present invention is to provide a beta zeolite which includes zinc and has a small particle size. This beta zeolite includes a silicon oxide and a zinc oxide, and has an average particle size of 50 to 100 nm at a cumulative frequency of 50% in a particle size distribution measured by scanning electron microscope observation.

Abstract: Disclosed is a method for readily and inexpensively producing zeolite without using an organic structure-directing agent (organic SDA). Specifically disclosed is a method whereby a gel containing a silica source, an alumina source, an alkaline source and water is reacted with zeolite seed crystals, to produce a zeolite with the same kind of skeletal structure as the zeolite. The gel used is a gel of a composition whereby, when a zeolite is synthesized from this gel only, the synthesized zeolite comprises at least one of the kinds of composite building units of the target zeolite.

Abstract: The objective of the invention is to provide an MSE-type zeolite production method such that an MSE-type zeolite can be produced in a comparatively short heating time by using inexpensive tetraethylammonium ion. The production method of the present invention comprises steps of: (1) mixing a silica source, an alumina source, an alkali source, tetraethylammonium ion, and water in such a manner as to yield a reaction mixture of the composition represented by the molar ratios indicated below: SiO2/Al2O3=between 10 and 100 inclusive (Na2O+K2O)/SiO2=between 0.15 and 0.50 inclusive K2O/(Na2O+K2O)=between 0.05 and 0.7 inclusive TEA2O/SiO2=between 0.08 and 0.20 inclusive H2O/SiO2=between 5 and 50 inclusive; (2) using the MSE-type zeolite as a seed crystal, and adding this seed crystal to the mixture at a proportion of 5 to 30% by mass with respect to the silica component in the reaction mixture; and (3) heating, under hermetic seal at a temperature of 100 to 200° C.

Abstract: Provided is a method for producing a beta zeolite, which is a seed crystal addition method that is capable of reducing the environmental load as much as possible. A method for producing a beta zeolite according to the present invention comprises a step wherein a reaction mixture that contains a silica source, an alumina source, an alkali source and water and a seed crystal that is composed of a beta zeolite are mixed with each other and heated. A beta zeolite which comprises particles having a particle size of 10 ?m or less in an amount of 90% or more on a volume basis in the particle size distribution as determined by a laser diffraction/scattering particle size distribution measuring method, and which is synthesized without using an organic structure-directing agent is used as the seed crystal.

Abstract: Provided is a mordenite zeolite which can be produced without using an organic structure-directing agent, and has superior multivalent metal cation exchange capability. The mordenite zeolite according to the present invention containing silicon, a divalent metal M and aluminum in a skeletal structure, wherein the mordenite zeolite has the following atomic ratios in the state of Na-form. The mordenite zeolite preferably has a BET specific surface area of 250 m2/g or more and 500 m2/g or less and a micropore volume of 0.07 cc/g or more and 0.25 cc/g or less in the state of Na-form or H-form. Si/(M+Al)=5 or more and 10 or less, M/(M+Al)=0.

Abstract: Disclosed is a method for readily and inexpensively producing zeolite without using an organic structure-directing agent (organic SDA). Specifically disclosed is a method whereby a gel containing a silica source, an alumina source, an alkaline source and water is reacted with zeolite seed crystals, to produce a zeolite with the same kind of skeletal structure as the zeolite. The gel used is a gel of a composition whereby, when a zeolite is synthesized from this gel only, the synthesized zeolite comprises at least one of the kinds of composite building units of the target zeolite.

Abstract: In a vehicle seat, a movable frame provided at a front end portion of a stationary frame is slidable frontward and rearward, and an outer covering is provided to extend frontward from an upper side of the stationary frame and configured to wrap around a front end portion of the movable frame. Engageable members are provided to extend along the left and right end portions of the outer covering. The movable frame has grooves extending from an upper surface, through a front surface and to an undersurface thereof. The engageable members are engageable in the grooves. Each groove includes a first groove section, and a second groove section extending from the first groove section in a direction different from a direction in which the first groove section extends. Each engageable member includes a body portion extending from the outer covering and a claw portion extending from the body portion.

Abstract: Provided is a production method with which it is possible to produce beta zeolite at high purity by suppressing the generation of impurities by a seed crystal addition method that can reduce the environmental burden as much as possible, without using an organic structure-directing agent. This method for producing beta zeolite having a step that mixes and heats an organic-compound-free reaction mixture comprising a silica source, alumina source, alkali source, and water with beta zeolite seed crystals, wherein (I) beta zeolite synthesized without using an organic structure-directing agent and having 90% or more by volume of particles 10 ?m or less in diameter in the particle size distribution by a laser diffraction scattering-type particle size distribution measurement method is used, (III) acid-treated zeolite in which the SiO2/Al2O3 ratio is 150 or less is prepared by (II) contact treatment with an acidic aqueous solution, and the acid-treated zeolite is used as the beta zeolite seed crystals.

Abstract: Provided is a method for continuous production of zeolite in which a starting material is continuously supplied to a tubular reactor to produce an aluminophosphate zeolite that contains, in the framework structure, at least aluminum atoms and phosphorus atoms or an aluminosilicate zeolite having 5?SiO2/Al2O3?2000. The tubular reactor is heated using a heat medium; a ratio (volume)/(lateral surface area) of the volume (inner capacity) to the lateral surface area of the tubular reactor is 0.75 cm or smaller; and seed crystals are added to the starting material. Through using a small-diameter tubular reactor and heating with a heat medium, it becomes possible to heat sufficiently the entirety of a starting material (zeolite precursor gel) in a short time, and to allow reaction to proceed at a high rate. The occurrence of irregular pressure fluctuations during continuous production of the zeolite can be prevented by adding seed crystals.

Abstract: The objective of the invention is to provide an MSE-type zeolite production method such that an MSE-type zeolite can be produced in a comparatively short heating time by using inexpensive tetraethylammonium ion. The production method of the present invention comprises steps of: (1) mixing a silica source, an alumina source, an alkali source, tetraethylammonium ion, and water in such a manner as to yield a reaction mixture of the composition represented by the molar ratios indicated below: SiO2/Al2O3=between 10 and 100 inclusive (Na2O+K2O)/SiO2=between 0.15 and 0.50 inclusive K2O/(Na2O+K2O)=between 0.05 and 0.7 inclusive TEA2O/SiO2=between 0.08 and 0.20 inclusive H2O/SiO2=between 5 and 50 inclusive; (2) using the MSE-type zeolite as a seed crystal, and adding this seed crystal to the mixture at a proportion of 5 to 30% by mass with respect to the silica component in the reaction mixture; and (3) heating, under hermetic seal at a temperature of 100 to 200° C.

Abstract: The purpose of the present invention is to provide a beta zeolite which includes zinc and has a small particle size. This beta zeolite includes a silicon oxide and a zinc oxide, and has an average particle size of 50 to 100 nm at a cumulative frequency of 50% in a particle size distribution measured by scanning electron microscope observation.

Abstract: A MSE-type zeolite which has a Si/Al ratio of 5 or more, is a proton-type zeolite, and is obtained by transforming a raw material MSE-type zeolite synthesized without using a structure directing agent into an ammonium-type zeolite through ion exchange, then, exposing the MSE-type zeolite to water vapor, and subjecting the exposed MES-type zeolite to an acid treatment.

Abstract: Provided is a method for producing a beta zeolite, which is a seed crystal addition method that is capable of reducing the environmental load as much as possible. A method for producing a beta zeolite according to the present invention comprises a step wherein a reaction mixture that contains a silica source, an alumina source, an alkali source and water and a seed crystal that is composed of a beta zeolite are mixed with each other and heated. A beta zeolite which comprises particles having a particle size of 10 ?m or less in an amount of 90% or more on a volume basis in the particle size distribution as determined by a laser diffraction/scattering particle size distribution measuring method, and which is synthesized without using an organic structure-directing agent is used as the seed crystal.

Abstract: Provided is a beta-type zeolite which has a high catalytic activity and is not easily deactivated. The beta-type zeolite of the invention has a substantially octahedral shape, has a Si/Al ratio of 5 or more, and is a proton-type zeolite. The Si/Al ratio is preferably 40 or more. This beta-type zeolite is preferably obtained by transforming a raw material beta-type zeolite synthesized without using a structure directing agent into an ammonium-type zeolite through ion exchange, then, exposing the beta-type zeolite to water vapor, and subjecting the exposed beta-type zeolite to an acid treatment.