Abstract
Monolithic alumina and aluminosilicate gels have been prepared using a novel sol-gel process based on the non-hydrolytic condensation reaction between a metal halide and a metal alkoxide. XRD indicated that the alumina gel remained amorphous at 750°C; solid state 27Al NMR indicated the presence in the dried gel and in the amorphous calcined sample of a large amount of pentacoordinated aluminum atoms. A study of the sol formation using liquid state 27Al NMR suggested that the gel structure was reminiscent of the oligomeric structure of the chloroisopropoxide precursors. Differential thermal analysis and XRD indicated that the aluminosilicate gels were converted to mullite below 1000°C, suggesting a high degree of homogeneity in these precursors.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Corriu, R.J.P., Leclercq, D., Lefevre, P., Mutin, P.H., and Vioux, A., J. Non-Cryst. Solids. 146, 301 (1992); J. Mater. Chem. 2, 673 (1992); Chem. Mater. 4, 961 (1992).
Bhatt, V. and Kulkarni, S.U., Synthesis, 4, 249 (1983).
Mehrotra, R.C., J. Non-Cryst. Solids 100, 1 (1988).
Tayaa, H., Mosset, A., and Galy, J., Eur. J. Solid State Inorg. Chem. 29, 27 (1992).
Slade, R.C.T., Southern, J.C., and Thompson, I.M., J. Mater. Chem. 1, 563 (1991).
Slade, R.C.T., Southern, J.C., and Thompson, I.M., J. Mater. Chem. 1, 875 (1991).
Chen, F.R., Davis, J.G., and Fripiat, J.J., J. Catal. 133, 263 (1992).
Wood, T.E., Siedle, A.R., Hill, J.R., Skarjune, R.P., and Goodbrake, C.J., in Better Ceramics through Chemistry IV, Mat. Res. Soc. Symp. Proc. 180 (1990) p. 97.
Yanovskii, A.I., Kozunov, V.A., Turova, N.Ya., Furmanova, N.G., and Stuchkov, Yu.T., Dokl. Akad. Nauk SSSR 244, 119 (1979).
Kriz, O., Casensky, B., Lycka, A., Fusek, J., and Hermanek, S., J. Mag. Reson. 60, 375 (1984).
Dalibart, M. and Derouault, J., Coord. Chem. Rev. 74, 1 (1986).
Brinker, C.J. and Scherer, G.W., Sol-Gel Science: The Physics and Chemistry of Sol-Gel Processing (Academic Press, San Diego, 1990), pp. 59–78.
Yoldas, B.E., J. Mater. Sci. 27, 6667 (1992).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Acosta, S., Corriu, R., Leclercq, D. et al. Novel non-hydrolytic sol-gel route to metal oxides. J Sol-Gel Sci Technol 2, 25–28 (1994). https://doi.org/10.1007/BF00486208
Issue Date:
DOI: https://doi.org/10.1007/BF00486208