The kinetics of silica-based aerogel formation was investigated and described analytically. Experimental gelation kinetics was designated by (i) filtration and determination of the resulting product mass, (ii) absorbance measurements during gelation. The dependence of aerogel mass on gelation time, in general, has a form similar to a sigmoid function. However, for small initial precursor concentration, a deviation from this function is observed. The proposed theoretical description explain these tendencies. It assumes that the aerogel condensation has a form of reaction between free precursor molecules and already formed aerogel particle. However, at the very beginning, before the clusters start to appear, the bonding between free molecules plays a dominant role what is especially visible for low precursor concentration. It was shown that such a description explains the shape of the dependence of aerogel mass on reaction time. Moreover, the research enabled the estimation of the kinetic constant and the activation energy.

对二氧化硅基气凝胶形成的动力学进行了研究和分析。通过（i）过滤和确定所得产物质量，（ii）凝胶化过程中的吸光度测量来指定实验性凝胶化动力学。气凝胶质量对胶凝时间的依赖性通常具有类似于乙状结肠功能的形式。但是，对于较小的初始前驱物浓度，会观察到与该功能的偏差。提出的理论描述解释了这些趋势。假定气凝胶缩合具有游离前体分子与已经形成的气凝胶颗粒之间的反应形式。但是，从一开始，在簇开始出现之前，自由分子之间的键就起着主导作用，这对于低前驱物浓度尤其明显。已经表明，这种描述解释了气凝胶质量对反应时间的依赖性的形状。而且，该研究使得能够估计动力学常数和活化能。