What is the pore body of silica

Hydrophobic silica is a high-purity hydrophobic silica powder after surface modification
Silica is a kind of diatomite, which can regulate humidity and decompose formaldehyde. Now the concept of white carbon black is quite popular. It is said that white carbon black is artificial diatomite, which is many times better than natural diatomite; However, the pore structure of diatomite cannot be imitated by humans at present. The chemical composition of silica is also different from that of diatomite. Although it is composed of SiO2, it is not a material. Silica has extremely fine pore size and large specific surface area, which is similar to activated carbon with strong adsorption capacity; But like activated carbon, it can only be absorbed but not released; If you inhale to a certain extent, you will be saturated, so you cannot breathe and regulate humidity. Silica is also an inert material and cannot decompose formaldehyde. The diatom mud made of white carbon black has a strong adsorption capacity at the initial stage, but it will be greatly reduced after a long time, and the diatom mud has absorbed the toxic sludge of pollutants.

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