Journal of Materials Science

, Volume 29, Issue 16, pp 4325–4330 | Cite as

Study of phase-transfer-catalyst influence in CaO-SiO2 Gel preparation

  • E. Cordoncillo
  • G. Monrós
  • M. A. Tena
  • P. Escribano
  • J. Carda


Gels in a CaO-SiO2 (20∶80 wt%) system were prepared in a heterogeneous phase. The following phase-transfer catalysts were tested: 18-Crown-6, 15-Crown-5 and tetrabutylammonium hydrogenosulphate. The influences of the polarity of two non-classical solvents (toluene and dichloromethane) were also studied. The degrees of polymerization and of oxide contents were analysed by infrared spectroscopy and thermal analysis. Finally, the morphology and structure of the dry and fired gels were studied by scanning electron microscopy (SEM) and X-ray diffraction (XRD).


Oxide Polymer Spectroscopy Microscopy Electron Microscopy 
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Copyright information

© Chapman & Hall 1994

Authors and Affiliations

  • E. Cordoncillo
    • 1
  • G. Monrós
    • 1
  • M. A. Tena
    • 1
  • P. Escribano
    • 1
  • J. Carda
    • 1
  1. 1.E.S.T.y Ciencias ExperimentalesArea de Química Inorgánica Universitat Jaume ISpain

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