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Thermally stable crystalline mesoporous metal oxides with substantially uniform pores

United States Patent

January 27, 2015
View the Complete Patent at the US Patent & Trademark Office
Highly crystalline metal oxide-carbon composites, as precursors to thermally stable mesoporous metal oxides, are coated with a layer of amorphous carbon. Using a `one-pot` method, highly crystalline metal oxide-carbon composites are converted to thermally stable mesoporous metal oxides, having highly crystalline mesopore walls, without causing the concomitant collapse of the mesostructure. The `one-pot` method uses block copolymers with an sp or sp 2 hybridized carbon containing hydrophobic block as structure directing agents which converts to a sturdy, amorphous carbon material under appropriate heating conditions, providing an in-situ rigid support which maintains the pores of the oxides intact while crystallizing at temperatures as high as 1000 deg C. A highly crystalline metal oxide-carbon composite can be heated to produce a thermally stable mesoporous metal oxide consisting of a single polymorph.
Wiesner; Ulrich (Ithaca, NY), Orilall; Mahendra Christopher (Vancouver, CA), Lee; Jinwoo (Kyungbuk, KR), DiSalvo, Jr.; Francis J. (Ithaca, NY)
Cornell University (Ithaca, NY)
12/ 747,649
December 12, 2008
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT The Department of Energy has certain rights in this invention pursuant to contract number DE-FG02 87ER45298 between the Department of Energy and Cornell University.