Thermally stable crystalline mesoporous metal oxides with substantially uniform pores

Patent · Tue Jan 27 04:00:00 EST 2015

OSTI ID:1168688

Wiesner, Ulrich; Orilall, Mahendra Christopher; Lee, Jinwoo; DiSalvo, Jr., Francis J

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.

• Research Organization: Cornell University, Ithaca, NY (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: FG02-87ER45298
• Assignee: Cornell University (Ithaca, NY)
• Patent Number(s): 8,940,224
• Application Number: 12/747,649
• OSTI ID: 1168688
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE