Characterization Of Partially Condensed Silica Formed From The Partial Hydrolysis Of Tmos

Abstract

A stable mixture of partially condensed polysilicates is formed from the substoichiometric, acid catalysed hydrolysis of tetramethoxysilane [Si(OCH3)4] and the removal of the reaction- generated methanol by distillation. This mixture has been used as a precursor to make silica aerogels that show microstructural differences from base catalysed TMOS aerogels. In this paper, we report the analysis of this mixture for a determination of the type and distribution of the polysilicate species formed, and we include measurements of some physical properties of this fluid.

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References

  1. [1]

    S.S. Kistler, Nature, 127, 741 (1931).

    CAS  Google Scholar 

  2. [2]

    J. Fricke, Scientific American, 258(5), 92 (1988).

    CAS  Article  Google Scholar 

  3. [3]

    W.G. Klemperer and S.D. Ramamurthi, in Better Ceramics through Chemistry, edited by C.J. Brinker, D.E. Clark, and D.R. Ulrich, Mater. Res. Soc. Proc. 121, 1 (1988).

  4. [4]

    J.C. Pouxviel and J.P. Boilot, J. Non-Cryst. Solids, 89, 345 (1987).

    CAS  Article  Google Scholar 

  5. [5]

    C.W. Turner and K.J. Franklin, J. Non-Cryst. Solids, 91, 402, (1987)

    CAS  Article  Google Scholar 

  6. [6]

    L.W. Hrubesh, T.M. Tillotson, and J.F. Poco, this proceedings.

  7. [7]

    J.D. LeMay, R.W. Pekala, and L.W. Hrubesh, Pacific Polym. Preprints, 1, 295 (1989).

    Google Scholar 

  8. [8]

    D. Neuhaus, J. Keeler and R. Freeman, J. Magnetic Resonance, 61, 553 (1985).

    CAS  Google Scholar 

  9. [9]

    L.W. Kelts and N.J. Armstrong, J. Mater. Res., 4 (2), 423 (1989).

    CAS  Article  Google Scholar 

  10. [10]

    H.C. Marsmann, E. Meyer, M. Vongehr, E. Weber, Makromol. Chem., 184, 1817 (1983).

    CAS  Article  Google Scholar 

  11. [11]

    G. Engelhardt, H. Jancke, D. Hoebel and W. Wicker, Z. Chem., 14, 109 (1974).

    CAS  Article  Google Scholar 

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Correspondence to T. M. Tillotson.

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Tillotson, T.M., Hrubesh, L.W. Characterization Of Partially Condensed Silica Formed From The Partial Hydrolysis Of Tmos. MRS Online Proceedings Library 180, 309 (1990). https://doi.org/10.1557/PROC-180-309

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