High surface-area ceria aerogel

Mary A. Thundathil, Wei Lai, Liam Noailles, Bruce S. Dunn, Sossina M. Haile

Research output: Research - peer-reviewArticle

  • 21 Citations

Abstract

Ceria (CeO2) aerogels with high surface area and high porosity have been prepared. Ce-methoxyethoxide diluted in excess methoxyethanol was slowly hydrolyzed to yield a gel, which was then supercritically dried in CO2. Both as-synthesized and annealed aerogels were examined by X-ray powder diffraction, infrared spectroscopy, scanning electron microscopy, and BET surface area and pore-size analyses. Thermal analysis of the as-synthesized gel showed it to contain only ∼5 wt% residual organics, which were removed by 300°C under oxygen. The unheated ceria aerogel was crystalline and exhibited a specific surface area of 349 m2/g with average pore diameter of ∼21.2 nm and 90% porosity. Heat treatment led to a reduction of porosity and pore size, as would be expected, but the extremely narrow pore-size distribution of the aerogel was retained.

LanguageEnglish (US)
Pages1442-1445
Number of pages4
JournalJournal of the American Ceramic Society
Volume87
Issue number8
StatePublished - Aug 2004
Externally publishedYes

Profile

Aerogels
Cerium compounds
surface area
porosity
Pore size
Porosity
gel
Gels
infrared spectroscopy
scanning electron microscopy
X-ray diffraction
oxygen
analysis
Carbon Monoxide
Specific surface area
X ray powder diffraction
Thermoanalysis
Infrared spectroscopy
Heat treatment
Oxygen

ASJC Scopus subject areas

  • Ceramics and Composites

Cite this

Thundathil, M. A., Lai, W., Noailles, L., Dunn, B. S., & Haile, S. M. (2004). High surface-area ceria aerogel. Journal of the American Ceramic Society, 87(8), 1442-1445.

High surface-area ceria aerogel. / Thundathil, Mary A.; Lai, Wei; Noailles, Liam; Dunn, Bruce S.; Haile, Sossina M.

In: Journal of the American Ceramic Society, Vol. 87, No. 8, 08.2004, p. 1442-1445.

Research output: Research - peer-reviewArticle

Thundathil, MA, Lai, W, Noailles, L, Dunn, BS & Haile, SM 2004, 'High surface-area ceria aerogel' Journal of the American Ceramic Society, vol 87, no. 8, pp. 1442-1445.
Thundathil MA, Lai W, Noailles L, Dunn BS, Haile SM. High surface-area ceria aerogel. Journal of the American Ceramic Society. 2004 Aug;87(8):1442-1445.
Thundathil, Mary A. ; Lai, Wei ; Noailles, Liam ; Dunn, Bruce S. ; Haile, Sossina M./ High surface-area ceria aerogel. In: Journal of the American Ceramic Society. 2004 ; Vol. 87, No. 8. pp. 1442-1445
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