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Numerical Simulation of the Polycondensation of Orthosilicic Acid and of the Formation of Silica Particles in Hydrothermal Solutions
Journal of Volcanology and Seismology ( IF 0.7 ) Pub Date : 2019-08-26 , DOI: 10.1134/s0742046319040055
V. V. Potapov , A. A. Cerdan , I. A. Kashutina

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.


中文翻译:

水热溶液中原硅酸缩聚和二氧化硅颗粒形成的数值模拟

摘要

本文报道了在多种物理和化学条件(温度,pH,离子强度等)下水热溶液中原硅酸(OSA)的缩聚和二氧化硅颗粒(SiO 2)数量的增长的数值模拟工作。已推导关系来计算原硅酸的浓度和二氧化硅颗粒的平均半径与时间的关系,并绘制了显示颗粒尺寸分布的图。将结果与实验数据进行比较。这项研究对于研究胶态二氧化硅在水热矿化中的作用以及对二氧化硅的实际提取和应用以及矿物合成具有重要意义。
更新日期:2019-08-26
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