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High Temperature Oxide Aerogels

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Springer Handbook of Aerogels

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Abstract

Numerous applications from insulation to catalytic supports and fuel cells can benefit from lightweight, high surface area, mesoporous materials which maintain their mesoporous structure to temperatures of 600 to 1200 °C. Polymeric aerogels are limited to temperatures of nominally 400 °C due to thermal degradation of organic groups. Silica aerogels begin to densify by 700 °C. A number of aerogel systems show stability at higher temperatures, including alumina, alumina silicates, yttrium-doped alumina, and zirconia and yttria-stabilized zirconia aerogels. Within a given chemical composition, the morphology and textural stability of a mesoporous structure is dependent upon the synthesis method used. Other important considerations in choosing an aerogel composition include the time at temperature required for a given application, phase transformations inherent in a given system, and approaches to phase stabilization such as introduction of dopants into the backbone structure. Reinforcement of the aerogel through a composite approach also is addressed.

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Acknowledgments

The author wishes to thank Dereck Johnson and the many student interns who have contributed to our understanding of high temperature aerogels.

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Authors and Affiliations

  1. NASA Glenn Research Center, Cleveland, OH, USA

    Frances I. Hurwitz, Richard B. Rogers & Nathaniel Olson

  2. Ohio Aerospace Institute, NASA Glenn Research Center, Cleveland, OH, USA

    Haiquan Guo

  3. University of Toledo, Toledo, OH, USA

    Anita Garg

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  1. Frances I. Hurwitz
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  2. Haiquan Guo
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  3. Richard B. Rogers
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  4. Nathaniel Olson
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  5. Anita Garg
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Correspondence to Frances I. Hurwitz .

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Editors and Affiliations

  1. Bottens, Switzerland

    Michel A. Aegerter

  2. Research and Development, Aspen Aerogels, Inc., Northborough, MA, USA

    Nicholas Leventis

  3. Siloxene AG, Dübendorf, Switzerland

    Matthias Koebel

  4. Aerogel Technologies, LLC, Boston, MA, USA

    Stephen A. Steiner III

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Hurwitz, F.I., Guo, H., Rogers, R.B., Olson, N., Garg, A. (2023). High Temperature Oxide Aerogels. In: Aegerter, M.A., Leventis, N., Koebel, M., Steiner III, S.A. (eds) Springer Handbook of Aerogels. Springer Handbooks. Springer, Cham. https://doi.org/10.1007/978-3-030-27322-4_18

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