Pore-size selective modification of porous materials
AssigneeCornell Research Foundation, Inc.
InventorsJean M. J. Frechet, Frantisek Svec
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Abstract
A method of pore-size selective chemical modification of materials having pores of about 1 to 1,500 nm is disclosed. The resulting novel porous materials are particularly useful as separation media in chromatography, for selective isolation, adsorption and catalysis.
Claims14
A method of pore-size selective chemical modification of porous materials having pores of at least two different size ranges, said pores being substantially homogeneously distributed throughout the porous material and having reactive groups on the surfaces thereof, by means of a modifying agent, comprising (1) selecting a modifying agent having a size which precludes its penetration into all of the pores of one of the size ranges, (2) contacting the porous material with said modifying agent, and (3) allowing sufficient time for the modifying agent to chemically modifying the reactive groups only in the pores into which the modifying agent penetrates.
Dependencies are inferred from the claim text.