Silicon alkoxides based synthesis of silica aerogels, could be divided into two main approaches; a single-step recipe for a fixed density, benefiting from exceptional reproducibility and simplicity; and a two-step recipe, which enables a wide range of densities, yet includes stages that could hinder reproducibility. A procedure to synthesize aerogels in a wide range of densities is reported. This procedure avoids the sources of variability affiliated with the two-step recipe, and benefits from the reproducibility and simplicity of the single-step recipe. This procedure was formulated as a result of a thorough investigation of varying the molar ratio of the precursors involved in the single-step base catalyzed recipe. Aerogels in densities ranging from 25 to 150 mg/ml were synthesized and analyzed. The analysis indicated that these aerogels have almost identical composition, skeletal structure and pore size distribution. Additionally, a strong correlation between the aerogels' intended and measured densities was achieved.

基于硅醇盐的二氧化硅气凝胶合成可分为两种主要方法：固定密度的单步配方，得益于出色的可重复性和简便性；以及两步配方，可实现多种密度，但包括可能会阻碍重现性的阶段。报道了以各种密度合成气凝胶的方法。此过程避免了两步配方附带的可变性来源，并受益于单步配方的可重复性和简单性。该程序是通过彻底研究一步碱催化配方中涉及的前体的摩尔比而制定的。合成并分析了密度为25至150 mg / ml的气凝胶。分析表明这些气凝胶具有几乎相同的组成，骨架结构和孔径分布。另外，在气凝胶的预期密度和测量密度之间实现了很强的相关性。