Silica gel is a porous material composed primarily of silicic acid. It possesses a highly developed pore structure and a large specific surface area, which endows it with excellent adsorption capabilities. As a typical physical adsorbent, silica gel absorbs moisture and gas molecules from the air through van der Waals forces.

Thanks to its moisture absorption properties, silica gel is widely used in desiccants. Whether in electronic packaging, pharmaceutical storage, or the transportation of precision instruments, silica gel desiccants play a crucial role in moisture prevention and mold resistance. It can rapidly absorb moisture from the environment and can be regenerated by heating, making it both economical and environmentally friendly.

Beyond drying agents, silica gel finds applications in gas separation, air purification, and water treatment. In industrial catalysis, it is used as a catalyst carrier due to its favorable surface structure and dispersibility, which help improve catalytic efficiency.

In the medical and food industries, food-grade and medical-grade silica gel are valued for their chemical inertness, non-toxicity, and odorlessness. They are used in making stoppers, adsorption pads, and baby products. Owing to its good thermal stability and safety, silica gel is also suitable for use in high-temperature environments.

It is worth noting that different types of silica gel (such as macroporous, mesoporous, and microporous) have varying adsorption characteristics, allowing users to select suitable models based on specific needs. With the advancement of functional modification technologies, silica gel's selective adsorption capabilities continue to improve, opening up broader application prospects.

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