초록 ▼

A method for the preparation of new semi-crystalline, porous inorganic oxide compositions possessing uniform framework-confined mesopores in the range 2.0-10.0 nm. The method uses an interaction between various nonionic polyethylene oxide based surfactants (N.degree.) and neutral inorganic oxide pre

A method for the preparation of new semi-crystalline, porous inorganic oxide compositions possessing uniform framework-confined mesopores in the range 2.0-10.0 nm. The method uses an interaction between various nonionic polyethylene oxide based surfactants (N.degree.) and neutral inorganic oxide precursors (I.sup..quadrature.) at ambient reaction temperatures. The materials formed exhibit a disordered assembly of worm-like channels of regular diameter owing to the specific mechanism of self-assembly, producing highly stable materials and particles incorporating large numbers of the channels. This (N.degree. I.degree.) templating approach introduces several new concepts to mesostructure synthesis. The application of the low-cost, non-toxic and biodegradable surfactants and ambient reaction temperatures, introduces environmentally clean synthetic techniques to the formation of mesostructures. Recovery of the template can be achieved through solvent extraction where the solvent may be water or ethanol.

대표청구항 ▼

[ We claim:] [1.] A synthetic, semi-crystalline inorganic oxide composition having at least one resolved x-ray reflection corresponding to a lattice spacing of 3 to 10 nm, framework confined channels between about 2 and 10 nm diameter, and a specific surface area of 300 to 1400 square meters per gra

[ We claim:] [1.] A synthetic, semi-crystalline inorganic oxide composition having at least one resolved x-ray reflection corresponding to a lattice spacing of 3 to 10 nm, framework confined channels between about 2 and 10 nm diameter, and a specific surface area of 300 to 1400 square meters per gram and having a disordered assembly of worm channels.