A porous silica having at least one metal X selected from the group consisting of Mn, Cu and Fe.

The present invention relates to a hydroxyapatite-supporting porous silica particle, in which hydroxyapatite is supported on a surface a spherical porous silica particle and inner surfaces of pores of the spherical porous silica particle, and in which the hydroxyapatite-supporting porous silica particle has a circularity of 0.760 or larger, a method for producing the hydroxyapatite-supporting porous silica particles, and a composition containing the hydroxyapatite-supporting porous silica particle.

A method of producing ceria nanocrystals is provided. The method includes providing a gas that includes ozone to a solution that includes a cerium salt, and obtaining ceria nanocrystals from the solution after the gas is provided to the first solution. A method of producing nanoparticles is provided. The method includes providing a gas that includes ozone to a solution that includes a metal salt that includes at least one of a transition metal or a lanthanide, and producing at least one of metal oxide nanoparticles, metal oxynitrate nanoparticles, or metal oxyhydroxide nanoparticles from the solution after the gas is provided to the solution.

A process for producing alumina and a lithium salt comprising the steps of: (a) calcining an alpha spodumene ore or concentrate to produce beta spodumene; and (b) (I) leaching beta spodumene from the calcining step (a) with an alkaline solution under pressure; or (II) sulphating beta spodumene with at least sodium sulphate and leaching said sulphated beta spodumene to produce a lithium containing solution and a zeolitic residue. The lithium containing solution is treated to provide a purified lithium salt and said zeolitic residue is treated to provide high purity alumina.

Provided is a hydrogen isotope adsorbent with differential binding properties and including mesoporous silica doped with fluorine.

Disclosed are a spherelike supermacroporous mesoporous material, a polyolefin catalyst, and a preparation method therefor and an olefin polymerization process. The spherelike supermacroporous mesoporous material has a twodimensional hexagonal ordered pore channel structures. The mesoporous material has an average pore size of 10 nm to 15 nm, a specific surface area of 300 m.sup.2/g to 400 m.sup.2/g, and an average particle size of 1 .Math.m to 3 .Math.m, based on the total mass of the mesoporous material. The mass content of water in the mesoporous material is < 1 ppm. The mass content of oxygen in the mesoporous material is < 1 ppm. When a polyolefin catalyst prepared with the mesoporous material as a carrier is used for an olefin polymerization reaction, the a polyolefin product with a narrow molecular weight distribution and a good melt index can be obtained.

Silica-based hydrophobic granular material with an increased polarity Silica-based granular material, comprising silica and at least one IR-opacifier, hydrophobized with a surface treatment agent comprising a silicon atom, wherein the granular material has: a) a cumulative pore volume of pores>4 nm of more than 2.5 cm.sup.3/g, as determined by the mercury intrusion method according to DIN ISO 15901-1; b) a tamped density of 140 g/L to 290 g/L; c) a number of silanol groups relative to BET surface area d.sub.SiOH of at least 0.5 SiOH/nm.sup.2, as determined by reaction with lithium aluminium hydride. d) a number of silicon atoms in the surface treatment agent relative to BET surface area d.sub.[Si] of at least 1.0 [Si atoms]/nm.sup.2.

A method can include reducing a silica starting material to produce a first quantity of at least metallurgical grade silicon and a second quantity of silica comprising elemental carbon doping, wherein the silica starting material is reduced in the presence of a carbonaceous reducing agent. A silica material can be a silica material as prepared according to the method.

A particle material that has high dispersibility in a dispersion medium such as toluene having high hydrophobicity, and a slurry composition in which the particle material is used, are provided for solving the problem. A surface-modified particle material of the present invention includes: a particle material formed of an inorganic material; and a surface treatment agent formed of a silane compound having a first functional group that has any of C, N, and O atoms away over five or more atoms from Si to which an alkoxide is bound, the surface treatment agent allowing surface treatment of the particle material in such an amount that a degree of hydrophobicity becomes not less than 30%. Dispersibility is enhanced also in a dispersion medium having high hydrophobicity in a case where a functional group having a predetermined structure is introduced so as to impart predetermined or higher hydrophobicity.

The present invention provides a nitric-oxide containing composite in the form of microparticles, wherein said microparticles comprise: (i) a core which comprises silica; (ii) a layer on said core which comprises a metal-organic framework; and (iii) nitric oxide;
wherein said metal-organic framework comprises organic ligands comprising at least one amine group, said metal-organic framework is uniformly distributed on the surface of said silica core and said nitric oxide is chemisorbed within said metal-organic framework.