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The electrostatic force generated by the silicon hydroxyl group structure on the surface of silica gel makes it have a strong adsorption effect on material molecules (especially polar or strongly polar substances). The surface adsorption of silica gel is multi-molecular layer adsorption (BET theory), and the strength of the adsorption depends on the specific surface area. Therefore, we can meet different adsorption conditions by producing silica gel with different specific surfaces, so that the application range of silica gel is wider.
Silica gel is an important adsorbent material, which can attach the active ingredient to the surface of its particles, so that the liquid trace compound additive becomes a solid compound, which is conducive to the implementation of uniform mixing. It is a solid substance that can effectively adsorb certain components from a gas or liquid. It has a large specific surface, a suitable pore structure and a surface structure; it has a strong adsorption capacity on the adsorbent; it generally does not react chemically with the adsorbent and the medium; it is easy to manufacture and easy to regenerate; it has excellent adsorption and mechanical properties.
Adsorbent is an indispensable product in modern industry. It has a great effect. It can not only separate substances, but also adsorb excess moisture in some products. The cost is low, the process is simple, and it can be reused. Industry is becoming more and more developed. Adsorbents are generally widely used in oil production and refining in the petroleum industry, as well as industrial wastewater, steel rolling water, electroplating sewage treatment, as well as grain and oil processing, leather, paper, textiles, food processing and many other industries
