Not often used as adsorbent is ()

Not often used as adsorbent is () as follows:

Common adsorbents are activated carbon, diatomite, zeolite and so on. These substances have high specific surface area and porous structure, and can effectively adsorb and separate impurities in liquid or gas. However, some substances are not often used as adsorbents. Here are some substances that are not often used as adsorbents:

Ordinary sponge: Although ordinary sponge is porous, its adsorption capacity is weak, and it is mainly used for cleaning and filtering.

Glass fiber: Glass fiber has high strength and heat resistance, but it does not have adsorption performance.

Polystyrene: Polystyrene is a plastic material, which has no adsorption performance and is mainly used as packaging and building materials.

Polyurethane: Polyurethane is a kind of polymer material, which is mainly used to make elastomers and coatings, but it has no adsorption performance.

Phenolic resin: Phenolic resin is a synthetic material with high strength and heat resistance, but it has no adsorption performance.

It should be noted that the adsorption properties of different substances depend on their chemical composition and structure. Although some substances are not often used as adsorbents, they can also show certain adsorption properties in some cases. Therefore, when selecting adsorbents, it is necessary to select suitable adsorbents according to the actual application scenarios and substances to be adsorbed.