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Fractal structure in base-catalyzed silica aerogels examined by TEM, SAXS and porosimetry

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Abstract

A fractal analysis of three base catalyzed silica aerogels was performed using different experimental techniques: image analysis of electron micrographs, SAXS and study of pore size distribution determined from nitrogen adsorption isotherms. The aerogels appeared to exhibit self-similar properties over the range from 3–10 to 50–130 nm. The values of mass fractal dimension varied from 1.75 to 2.05 depending on the reactants concentration (TEOS, H2O) and were found to be similar irrespective of the method applied.

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Authors and Affiliations

  1. Federal Scientific Center, Boreskov Institute of Catalysis, 630090, Novosibirsk, Russia

    Yu. I. Aristov, N. Lisitsa & V. I. Zaikovski

  2. Institute of Chemical Engineering, 44-100, Gliwice, Poland

    J. Lorenc & A. B. Jarzebski

Authors
  1. Yu. I. Aristov
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  2. N. Lisitsa
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  3. V. I. Zaikovski
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  4. J. Lorenc
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  5. A. B. Jarzebski
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Aristov, Y.I., Lisitsa, N., Zaikovski, V.I. et al. Fractal structure in base-catalyzed silica aerogels examined by TEM, SAXS and porosimetry. React Kinet Catal Lett 58, 367–375 (1996). https://doi.org/10.1007/BF02067046

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  • DOI: https://doi.org/10.1007/BF02067046

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