Aqueous Preparation of Chemically Homogeneous Multicomponent Silicate Precursors

  • I. Jaymes
  • A. Douy
Chapter
Part of the Data and Knowledge in a Changing World book series (DATAKNOWL)

Abstract

Chemically very homogeneous precursors of multicomponent silicate oxides may be easily prepared from rather dilute aqueous solutions of metal nitrate(s) in which a silicon alkoxide is hydrolyzed into silicic acid. The transformation into solid precursors is achieved by different processes. Fine powders are obtained by spray-drying (examples of mullite and cordierite) and gels by in-situ generation of a base (examples of mullite and zircon)

Keywords

Silicic Acid Metal Nitrate Aluminum Nitrate Homogeneous Precipitation Silicon Alkoxide 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Résumé

Des précurseurs chimiquement très homogènes d’oxydes silicatés peuvent être facilement obtenus à partir de solutions aqueuses, relativement diluées, à de nitrate(s) métallique(s) dans lesquelles un alcoxyde de silicium est hydrolysé en acide silicique. La transformation en precurseur solide peut se réaliser de différentes façons. On obtient ainsi des poudres fines par atomisation (exemples de la mullite et de la cordiérite) ou des gels par génération d’une base au sein de la solution (cas de la mullite et du zircon).

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Copyright information

© Springer-Verlag Berlin Heidelberg 1998

Authors and Affiliations

  • I. Jaymes
    • 1
  • A. Douy
    • 1
  1. 1.Centre de Recherches sur la Physique des Hautes TempératuresCNRSOrléans Cedex 02France

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