Porous inorganic oxide materials prepared by non-ionic surfactan

Details Porous inorganic oxide materials prepared by non-ionic surfactan Porous inorganic oxide materials prepared by non-ionic surfactan

1996-05-02

1998-08-18

Marcheschi, Michael

Chemistry of inorganic compounds

Zeolite

Organic compound used to form zeolite

423700, 423702, 423704, 423705, 423706, 423707, 423119, 423121, 423123, 502 64, 502 66, 502 74, 502242, 502254, 502258, 502309, 502311, 502312, 502316, 208120, 208124, C01B 3904

Patent

active

057955590

ABSTRACT:
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.

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