The present invention provides a photoluminescent material emitting a visible light by irradiation of light, which is zeolite A comprising silver ion, zinc ion and at least one selected from the group consisting of cesium ion and rubidium ion.

The present invention provides a photoluminescent material emitting a visible light by irradiation of light, which is zeolite A comprising silver ion, zinc ion and at least one selected from the group consisting of cesium ion and rubidium ion.

Core @ layered double hydroxide shell materials of the invention have the formula:

T.sub.p@{[M.sup.z+.sub.(1x)M.sub.x.sup.y+(OH).sub.2].sup.a+(X.sup.n).sub.a/n.Math.bH.sub.2O.Math.c(AMO-solvent)}.sub.q

wherein T is a solid, porous, inorganic oxide-containing framework material, M.sup.z+ is a metal cation of charge z or a mixture of two or more metal cations each independently having the charge z; M.sup.y+ is a metal cation of charge y or a mixture of two or more metal cations each independently having the charge y; z=1 or 2; y=3 or 4; 0<x<0.9; b is 0 to 10; c is 0.01 to 10; p>0; q>0; X.sup.n is an anion; with n>0; a=z(1x)+xy2; and AMO-solvent is an organic solvent which is completely miscible with water.

Also disclosed are the products obtained by calcining the core @ layered double hydroxide shell materials which calcination products are core @ mixed metal oxide materials having the formula

T.sub.p@[{M.sup.z+.sub.1xM.sup.y+.sub.xO.sub.w].sub.p]

wherein T is a solid, porous, inorganic oxide-containing framework material, M.sup.z+.sub.1xM.sup.y+.sub.xO.sub.w is a mixed metal oxide, or mixture of mixed metal oxides, which may be crystalline or non-crystalline, wherein M.sup.z+ and M.sup.y+ are different charged metal cations; M.sup.z+ is a metal cation of charge z or a mixture of two or more metal cations each independently having the charge z; M.sup.y+ is a metal cation of charge y or a mixture of two or more metal cations each independently having the charge y; z is 1 or 2; y is 3 or 4; 0<x<0.9; w>0; p>0 and q>0; is the residue of an X.sup.n anion in which n>0.

Core @ layered double hydroxide shell materials of the invention have the formula:

T.sub.p@{[M.sup.z+.sub.(1x)M.sub.x.sup.y+(OH).sub.2].sup.a+(X.sup.n).sub.a/n.Math.bH.sub.2O.Math.c(AMO-solvent)}.sub.q

wherein T is a solid, porous, inorganic oxide-containing framework material, M.sup.z+ is a metal cation of charge z or a mixture of two or more metal cations each independently having the charge z; M.sup.y+ is a metal cation of charge y or a mixture of two or more metal cations each independently having the charge y; z=1 or 2; y=3 or 4; 0<x<0.9; b is 0 to 10; c is 0.01 to 10; p>0; q>0; X.sup.n is an anion; with n>0; a=z(1x)+xy2; and AMO-solvent is an organic solvent which is completely miscible with water.

Also disclosed are the products obtained by calcining the core @ layered double hydroxide shell materials which calcination products are core @ mixed metal oxide materials having the formula

T.sub.p@[{M.sup.z+.sub.1xM.sup.y+.sub.xO.sub.w].sub.p]

wherein T is a solid, porous, inorganic oxide-containing framework material, M.sup.z+.sub.1xM.sup.y+.sub.xO.sub.w is a mixed metal oxide, or mixture of mixed metal oxides, which may be crystalline or non-crystalline, wherein M.sup.z+ and M.sup.y+ are different charged metal cations; M.sup.z+ is a metal cation of charge z or a mixture of two or more metal cations each independently having the charge z; M.sup.y+ is a metal cation of charge y or a mixture of two or more metal cations each independently having the charge y; z is 1 or 2; y is 3 or 4; 0<x<0.9; w>0; p>0 and q>0; is the residue of an X.sup.n anion in which n>0.

There is provided a method for producing a zeolite more excellent in moisture absorption characteristics. The method includes physically pulverizing a zeolite that has a gradient of a Na/Si value from a surface of the zeolite in a depth direction, that has a proportion of the Na/Si value at a depth of 10 nm from the surface to the Na/Si value at the surface of 90% or more, and that has a proportion of the Na/Si value at a depth of 30 nm from the surface to the Na/Si value at the surface of 70% or more, the Na/Si value representing a composition ratio between Na and Si, and crystallizing the physically pulverized zeolite.

There is provided a method for producing a zeolite more excellent in moisture absorption characteristics. The method includes physically pulverizing a zeolite that has a gradient of a Na/Si value from a surface of the zeolite in a depth direction, that has a proportion of the Na/Si value at a depth of 10 nm from the surface to the Na/Si value at the surface of 90% or more, and that has a proportion of the Na/Si value at a depth of 30 nm from the surface to the Na/Si value at the surface of 70% or more, the Na/Si value representing a composition ratio between Na and Si, and crystallizing the physically pulverized zeolite.

This invention relates to a hydrogen spillover-based catalyst and use thereof, wherein a hydrogen activation metal cluster is dispersed in the form of being encapsulated in a crystalline or amorphous aluminosilicate matrix which is partially or fully structurally collapsed zeolite, thereby exhibiting high hydroprocessing or dehydrogenation activity and suppressed C-C hydrogenolysis activity.

This invention relates to a hydrogen spillover-based catalyst and use thereof, wherein a hydrogen activation metal cluster is dispersed in the form of being encapsulated in a crystalline or amorphous aluminosilicate matrix which is partially or fully structurally collapsed zeolite, thereby exhibiting high hydroprocessing or dehydrogenation activity and suppressed C-C hydrogenolysis activity.

The present invention provides a treatment method of a radioactive iodine-containing fluid, comprising passing the radioactive iodine-containing fluid through an adsorbent for iodine consisting of a silver-containing binderless zeolite molded body having a silver content of 50 mass % or less, to adsorb the radioactive iodine on the adsorbent for iodine.

The present invention provides a treatment method of a radioactive iodine-containing fluid, comprising passing the radioactive iodine-containing fluid through an adsorbent for iodine consisting of a silver-containing binderless zeolite molded body having a silver content of 50 mass % or less, to adsorb the radioactive iodine on the adsorbent for iodine.