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Glass Physics and Chemistry

, Volume 33, Issue 1, pp 44–49 | Cite as

Polycondensation of orthosilicic acid in hydrothermal solutions at different temperatures, pH values, and ionic strengths

  • V. V. Potapov
  • A. A. Serdan
  • V. N. Kashpura
  • V. A. Gorbach
  • N. A. Tyurina
  • S. V. Zubakha
Article

Abstract

The kinetics of polycondensation of orthosilicic acid in hydrothermal solutions is investigated at different temperatures, pH values, and ionic strengths. The equations approximating the time dependence of the polycondensation and the dependence of the polycondensation rate constant on the ionic strength of the solution are determined by the mathematical processing of the experimental data. The experimental data on the kinetics of the inverse process, i.e., the dissolution of colloidal silica, are obtained at different temperatures and pH values.

Keywords

Ionic Strength Polycondensation Silicic Acid Amorphous Silica Colloidal Silica 
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.

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Copyright information

© Pleiades Publishing, Ltd. 2007

Authors and Affiliations

  • V. V. Potapov
    • 1
  • A. A. Serdan
    • 2
  • V. N. Kashpura
    • 3
  • V. A. Gorbach
    • 1
  • N. A. Tyurina
    • 1
  • S. V. Zubakha
    • 1
  1. 1.Geotechnological Research Center, Far East DivisionRussian Academy of SciencesPetropavlovsk-KamchatskiiRussia
  2. 2.Moscow State UniversityLeninskie gory, MoscowRussia
  3. 3.Kamchatka State Technical UniversityPetropavlovsk-KamchatskiiRussia

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