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Title: 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:
; ; ;
Publication Date:
Research Org.:
Cornell Univ., Ithaca, NY (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1168688
Patent Number(s):
8,940,224
Application Number:
12/747,649
Assignee:
Cornell University (Ithaca, NY) CHO
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. doi:. 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}
}

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