Potassium permanganate-alumina is a commonly used chemical adsorption material and an excellent new environmentally friendly catalyst. It utilizes the strong oxidizing properties of potassium permanganate to oxidize and decompose harmful gases in the air, thereby achieving purification. It is effective against sulfur oxides (SO 2 Aldehydes, nitric oxides, hydrogen sulfide, and low-concentration aldehydes and organic acids exhibit high removal efficiency. The mixed potassium permanganate bead adsorption capacity is twice that of the impregnated potassium permanganate bead.