Thermally stable crystalline mesoporous metal oxides with substantially uniform pores
Abstract
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.
- Inventors:
- Issue Date:
- Research Org.:
- Cornell Univ., Ithaca, NY (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1168688
- Patent Number(s):
- 8940224
- Application Number:
- 12/747,649
- Assignee:
- Cornell University (Ithaca, NY)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01G - COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- DOE Contract Number:
- FG02 87ER45298
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Wiesner, Ulrich, Orilall, Mahendra Christopher, Lee, Jinwoo, and DiSalvo, Jr., Francis J. Thermally stable crystalline mesoporous metal oxides with substantially uniform pores. United States: N. p., 2015.
Web.
Wiesner, Ulrich, Orilall, Mahendra Christopher, Lee, Jinwoo, & DiSalvo, Jr., Francis J. Thermally stable crystalline mesoporous metal oxides with substantially uniform pores. United States.
Wiesner, Ulrich, Orilall, Mahendra Christopher, Lee, Jinwoo, and DiSalvo, Jr., Francis J. Tue .
"Thermally stable crystalline mesoporous metal oxides with substantially uniform pores". United States. https://www.osti.gov/servlets/purl/1168688.
@article{osti_1168688,
title = {Thermally stable crystalline mesoporous metal oxides with substantially uniform pores},
author = {Wiesner, Ulrich and Orilall, Mahendra Christopher and Lee, Jinwoo and DiSalvo, Jr., Francis J},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 27 00:00:00 EST 2015},
month = {Tue Jan 27 00:00:00 EST 2015}
}