Crystalline inorganic oxide compositions prepared by neutral templating route
AssigneeBoard of Trustees operating Michigan State University
InventorsThomas J. Pinnavaia, Peter T. Tanev
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AssigneeBoard of Trustees operating Michigan State University
InventorsThomas J. Pinnavaia, Peter T. Tanev
Estimating the term…
This invention relates to new crystalline organic compositions having unique combinations of framework-confined uniform mesopores and textural mesopores and to a method for their preparation. The compositions typically possess a framework wall thickness of at least about 17 .ANG., small elementary particle size of less than about 400 .ANG., and ratio of textural to framework-confined mesoporosity of greater than about 0.2. The formation of the mesoporous structure is accomplished by a novel self-assembly mechanism involving hydrogen bonding between neutral amine surfactant (S.degree.) and neutral inorganic oxide precursor (I.degree.). This S.degree.I.degree. templating approach allows for facile and environmentally benign recycling of the cost-intensive template by simple solvent extraction methods.
An uncalcined crystalline inorganic oxide composition having a particle size of .ltoreq.400 .ANG. and a wall thickness .gtoreq.17 .ANG. having uniform framework of confined mesopores and textural mesopores prepared by a method which comprises reacting a neutral amine template wherein the amine is a primary or secondary amine and a neutral inorganic oxide precursor to form a reaction product, hydrolysing of the precursor with an aqueous solution optionally in the presence of co-solvent to form a gel, aging of the gel to form the uncalcined crystalline inorganic oxide composition, wherein the neutral amine is selected from the group consisting of
Dependencies are inferred from the claim text.