Hydrothermal and microwave-hydrothermal preparation of silica gels

Sridhar Komarneni, V. C. Menon

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38 Scopus citations


We report here the rapid preparation and characterization of silica gels under conventional-hydrothermal (CH) as well as microwave-hydrothermal (MH) conditions from tetraethoxysilane and water in a molar ratio of 1:4 but without adding any alcohol as a co-solvent. Silica gels were prepared at 138°C in 2 h by both CH and MH processing while heating in an oven at 60°C required 48 h for complete gelation. Gelation was not complete in a water bath at 60°C even after 48 h. The rapid preparation of silica gels under CH and MH conditions is expected to save time, and maybe energy.

Original languageEnglish (US)
Pages (from-to)313-315
Number of pages3
JournalMaterials Letters
Issue number6
StatePublished - Aug 1996

All Science Journal Classification (ASJC) codes

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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