A high-purity artificial zeolite is industrially mass produced by carrying out osmosis treatment of fly ash in an alkaline aqueous solution, subsequently carrying out the osmosis treatment again with an acidic aqueous solution of pH 1.0 or less obtained by adding acid to the osmotic aqueous solution of fly ash, then performing solid-liquid separation while water wash and dewatering in a centrifuge, thereby synthesizing a starting composition, and performing hydrothermal reaction treatment to this starting composition.

Provided is a new heat source device utilizing a catalytic reaction heat of silver zeolite, the heat source device including an accommodation container for accommodating the silver zeolite while ensuring air permeability, in which the accommodation container is configured to be ventilated with a mixed gas containing hydrogen, steam, and air, the accommodation container is configured as a metal cylindrical member that includes a metal ventilation structure having a mesh on a downstream side in a ventilation direction, the mesh having a mesh size finer than a particle diameter of the silver zeolite; and the cylindrical member has a double pipe structure including an inner pipe and an outer pipe, said inner pipe being a straight pipe for allowing the mixed gas to linearly flow therein.

To provide a technique enabling the effective use of a plant-derived Si source. The present technique is capable of providing a production method of a porous material containing Si and Al, in which a first Si source composition that is a plant-derived Si source and an Al source are used as at least raw materials. The first Si source composition may be a Si source recovered when a treatment for recovering the Si source is carried out after a carbonization treatment of a plant-derived raw material. A second Si source composition may be a treatment product obtained by a decarburization treatment of a plant-derived raw material.

To provide a technique enabling the effective use of a plant-derived Si source. The present technique is capable of providing a production method of a porous material containing Si and Al, in which a first Si source composition that is a plant-derived Si source and an Al source are used as at least raw materials. The first Si source composition may be a Si source recovered when a treatment for recovering the Si source is carried out after a carbonization treatment of a plant-derived raw material. A second Si source composition may be a treatment product obtained by a decarburization treatment of a plant-derived raw material.

The present invention provides a method for selectively separating a straight-chain conjugated diene with high purity from a mixture containing the straight-chain conjugated diene and at least one type of straight-chain olefin. The method involves separating the straight-chain conjugated diene from the mixture containing the straight-chain conjugated diene and the straight-chain olefin using a zeolite membrane composite. The composite contains a porous support and a zeolite layer formed on the surface and in the fine pores of the support, and the zeolite contains an alkali metal cation.

The present invention provides a method for selectively separating a straight-chain conjugated diene with high purity from a mixture containing the straight-chain conjugated diene and at least one type of straight-chain olefin. The method involves separating the straight-chain conjugated diene from the mixture containing the straight-chain conjugated diene and the straight-chain olefin using a zeolite membrane composite. The composite contains a porous support and a zeolite layer formed on the surface and in the fine pores of the support, and the zeolite contains an alkali metal cation.

The present invention relates to a zeolite material in the form of FAU zeolite nanocrystal aggregates, to the method for preparing said material, to the zeolite agglomerates prepared from said material with a binder, and to the uses of said material and agglomerate as adsorbents for gas-phase or liquid-phase separation operations, and particularly in methods for separating gas or liquid flows.

The present invention relates to a zeolite material in the form of FAU zeolite nanocrystal aggregates, to the method for preparing said material, to the zeolite agglomerates prepared from said material with a binder, and to the uses of said material and agglomerate as adsorbents for gas-phase or liquid-phase separation operations, and particularly in methods for separating gas or liquid flows.

Disclosed is a method of producing zeolite that includes obtaining a lithium residue including aluminosilicate from lithium ore including lithium oxide; washing the lithium residue to adjust the pH of the lithium residue; adjusting a molar ratio of silicon to aluminum (Si/Al) included in the lithium residue; preparing a hydrogel by adding an alkali material to the lithium residue; and preparing crystals by crystallizing the lithium residue in the form of a hydrogel.

Disclosed is a method of producing zeolite that includes obtaining a lithium residue including aluminosilicate from lithium ore including lithium oxide; washing the lithium residue to adjust the pH of the lithium residue; adjusting a molar ratio of silicon to aluminum (Si/Al) included in the lithium residue; preparing a hydrogel by adding an alkali material to the lithium residue; and preparing crystals by crystallizing the lithium residue in the form of a hydrogel.