Method for producing high surface area chromia materials for catalysis
Abstract
Nanostructured chromium(III)-oxide-based materials using sol-gel processing and a synthetic route for producing such materials are disclosed herein. Monolithic aerogels and xerogels having surface areas between 150 m.sup.2/g and 520 m.sup.2/g have been produced. The synthetic method employs the use of stable and inexpensive hydrated-chromium(III) inorganic salts and common solvents such as water, ethanol, methanol, 1-propanol, t-butanol, 2-ethoxy ethanol, and ethylene glycol, DMSO, and dimethyl formamide. The synthesis involves the dissolution of the metal salt in a solvent followed by an addition of a proton scavenger, such as an epoxide, which induces gel formation in a timely manner. Both critical point (supercritical extraction) and atmospheric (low temperature evaporation) drying may be employed to produce monolithic aerogels and xerogels, respectively.
- Inventors:
-
- Brentwood, CA
- Patterson, CA
- Tracy, CA
- Pleasanton, CA
- Livermore, CA
- Issue Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 909145
- Patent Number(s):
- 7211607
- Application Number:
- 10/132,803
- Assignee:
- The Regents of the University of California (Oakland, CA)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01G - COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Gash, Alexander E, Satcher, Joe, Tillotson, Thomas, Hrubesh, Lawrence, and Simpson, Randall. Method for producing high surface area chromia materials for catalysis. United States: N. p., 2007.
Web.
Gash, Alexander E, Satcher, Joe, Tillotson, Thomas, Hrubesh, Lawrence, & Simpson, Randall. Method for producing high surface area chromia materials for catalysis. United States.
Gash, Alexander E, Satcher, Joe, Tillotson, Thomas, Hrubesh, Lawrence, and Simpson, Randall. Tue .
"Method for producing high surface area chromia materials for catalysis". United States. https://www.osti.gov/servlets/purl/909145.
@article{osti_909145,
title = {Method for producing high surface area chromia materials for catalysis},
author = {Gash, Alexander E and Satcher, Joe and Tillotson, Thomas and Hrubesh, Lawrence and Simpson, Randall},
abstractNote = {Nanostructured chromium(III)-oxide-based materials using sol-gel processing and a synthetic route for producing such materials are disclosed herein. Monolithic aerogels and xerogels having surface areas between 150 m.sup.2/g and 520 m.sup.2/g have been produced. The synthetic method employs the use of stable and inexpensive hydrated-chromium(III) inorganic salts and common solvents such as water, ethanol, methanol, 1-propanol, t-butanol, 2-ethoxy ethanol, and ethylene glycol, DMSO, and dimethyl formamide. The synthesis involves the dissolution of the metal salt in a solvent followed by an addition of a proton scavenger, such as an epoxide, which induces gel formation in a timely manner. Both critical point (supercritical extraction) and atmospheric (low temperature evaporation) drying may be employed to produce monolithic aerogels and xerogels, respectively.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2007},
month = {5}
}
Works referenced in this record:
Fluorination effects in chromia aerogels and xerogels
journal, April 1998
- Skapin, Tomaž; Kemnitz, Erhard
- Journal of Non-Crystalline Solids, Vol. 225
New sol–gel synthetic route to transition and main-group metal oxide aerogels using inorganic salt precursors
journal, June 2001
- Gash, Alexander E.; Tillotson, Thomas M.; Satcher Jr, Joe H.
- Journal of Non-Crystalline Solids, Vol. 285, Issue 1-3