Active aluminum oxide is a white, spherical, porous material with uniform particle size, a smooth surface, and high mechanical strength. It has strong dilutability, does not swell or crack upon water absorption, and maintains its original shape. It is non-toxic, odorless, insoluble in water and ethanol, and can be regenerated. Active aluminum oxide features adsorption properties and catalytic activity, and is characterized by its high porosity, high dispersion, and large specific surface area.