Serbuk gel silika adalah sistem koloid dengan ciri-ciri pepejal, terdiri daripada zarah koloid yang membentuk struktur terkumpul. Zarah koloid adalah polimer pemeluwapan gel silika terhidrat, yang merupakan bahan amorf. Jurang agregat zarah koloid membentuk struktur mikropori di dalam zarah silika gel untuk kromatografi lajur reagen. Oleh itu, ia adalah bahan penjerapan berkualiti tinggi dengan struktur mikropori kaya, luas permukaan spesifik tinggi, ketulenan tinggi dan aktiviti tinggi.
Serbuk gel silika has good thermal stability and chemical stability. It can selectively adsorb and purify isomer components from multi-component solutions. In the process of preparing serbuk gel silika, a series of products with an average pore diameter of 20A°-20000A° can be produced by controlling different process conditions to adapt to the separation and purification of substances with different properties, molecular weights and molecular structures. The purity of serbuk gel silika is as high as 99%. Compared with organic column packing, silica gel is a solid colloid with SiO2 as the matrix, and has a compact structure. Even if it is directly discarded, organic matter will be lost and the target product will be contaminated.
