High surface-area ceria aerogel

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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

28 Scopus 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.

Original languageEnglish (US)
Pages (from-to)1442-1445
Number of pages4
JournalJournal of the American Ceramic Society
Volume87
Issue number8
DOIs
StatePublished - Jan 1 2004

ASJC Scopus subject areas

  • Ceramics and Composites
  • Geology
  • Geochemistry and Petrology
  • Materials Chemistry

Fingerprint Dive into the research topics of 'High surface-area ceria aerogel'. Together they form a unique fingerprint.

Cite this