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Title: 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:
 [1];  [2];  [3];  [4];  [5]
  1. Brentwood, CA
  2. Patterson, CA
  3. Tracy, CA
  4. Pleasanton, CA
  5. Livermore, CA
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
909145
Patent Number(s):
7,211,607
Application Number:
10/132,803
Assignee:
The Regents of the University of California (Oakland, CA) OAK
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. doi:. 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 = {Tue May 01 00:00:00 EDT 2007},
month = {Tue May 01 00:00:00 EDT 2007}
}

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