The adsorption principle of activated alumina
OIM Activated alumina is a desiccant with strong adsorption performance. It is a porous and highly dispersed solid material made by a special process. It has a white spherical appearance, strong adsorption capacity, large specific surface area and excellent thermal stability. It is widely used as a catalyst and catalyst carrier for chemical reactions.
Activated alumina will be rapidly dehydrated during the activation process and will reversibly absorb water after activation. This adsorption is a physical adsorption process. Among all the adsorbents, activated alumina has a better drying effect because it has a strong adsorption capacity for water. Even at a very low partial pressure or concentration, it still has a high adsorption capacity. Under a very wide operating range and kinetic conditions, activated alumina has high drying efficiency-high adsorption capacity, fast adsorption speed, good thermal stability, stable operation cycle and no cracking when in contact with liquids.
Activated alumina desiccant is a desiccant used for deep drying of trace amounts of water, which is very suitable for non-heat regeneration equipment. White spherical porous particles, uniform particle size, smooth surface, high mechanical strength, good thermal stability, stable operation cycle, strong moisture absorption, no swelling or cracking after water absorption, and strong fluorine adsorption. Mainly used for defluoridation of drinking water in high fluoride areas. Its adsorption effect changes with the change of pH value. At about pH 7.0, the adsorption effect is relatively poor, and its adsorption capacity has been significantly improved under acidic or alkaline conditions.