又称硅溶胶。硅酸的多分子聚合物的胶体溶液。乳白色。浓度高时呈胶状。由硅酸钠溶液与弱酸作用或通过碘化媒交换钠离子而成。
用透射电子显微镜（TEM）和扫描电子显微镜（SEM）观察了硅酸溶胶的聚合过程。
The process of polymerization of silicic acid was observed by transmission electron microscope (TEM) and scanning electron microscope (SEM).
以甲醛与尿素作为单体在正硅酸乙酯水解所得的氧化硅溶胶中进行聚合反应制得了有机—无机二氧化硅复合微球。
The composite silica microsphere was obtained through the polymerization of urea and formaldehyde occurred in the silica sol that prepared from the hydrolyzation of tetraethyl orthosilicate.
本文利用硅酸乙酯(TEOS)的溶胶凝胶过程对葡萄糖氧化酶(GOD)进行了固定，并制备了不同载体下的GOD酶柱。
In this paper, GOD was immobilized in the course of gelation process of the sol of TEOS, and immobilized GOD columns were easily prepared with different carriers using this system.
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