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Numerical Simulation of the Polycondensation of Orthosilicic Acid and of the Formation of Silica Particles in Hydrothermal Solutions

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Abstract

This paper reports numerical modeling work for the polycondensation of orthosilicic acid (OSA) and the growth of the number of silica particles (SiO2) in hydrothermal solutions under a variety of physical and chemical conditions: temperature, pH, ionic strength, etc. We have derived relationships to calculate the concentration of orthosilicic acid and the mean radii of silica particles in relation to time and made plots showing the distribution of particles over size. The results were compared with experimental data. This study is important for investigating the role of colloidal silica in hydrothermal mineralization and for practical extraction and applications of silica, as well as for synthesis of minerals.

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Authors and Affiliations

  1. Geotechnological Research Center, Far East Branch, Russian Academy of Sciences, Severo-Vostochnoe shosse, 30, a/ya 56, 683002, Petropavlovsk-Kamchatsky, Russia

    V. V. Potapov

  2. Department of Chemistry, Moscow State University, 119991, Moscow, Russia

    A. A. Cerdan

  3. Vitus Bering University of Kamchatka, ul. Leningradskaya, 4, 683032, Petropavlovsk-Kamchatsky, Russia

    I. A. Kashutina

Authors
  1. V. V. Potapov
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  2. A. A. Cerdan
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  3. I. A. Kashutina
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Correspondence to V. V. Potapov, A. A. Cerdan or I. A. Kashutina.

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Translated by A. Petrosyan

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Potapov, V.V., Cerdan, A.A. & Kashutina, I.A. Numerical Simulation of the Polycondensation of Orthosilicic Acid and of the Formation of Silica Particles in Hydrothermal Solutions. J. Volcanolog. Seismol. 13, 216–225 (2019). https://doi.org/10.1134/S0742046319040055

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  • DOI: https://doi.org/10.1134/S0742046319040055

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