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The spherical activated alumina adsorbent is a white spherical porous particle. Activated alumina is with uniform particle size, smooth surface, high mechanical strength and strong hygroscopicity. It will not swell or crack and will remain intact after absorbing water. It is non-toxic, odorless and insoluble in water and ethanol. Activated alumina is an efficient desiccant for deep drying of trace water. It is very suitable for non-thermal regeneration device.
Alumina (AL2O3) used in catalysts is commonly referred to as activated alumina. It is a porous, highly dispersed solid material with a large surface area. Its microporous surface has the characteristics required by catalysis, such as adsorption, fluoride removal and drying. Because of its properties, surface activity and excellent thermal stability, it has been widely used as home desiccant, catalyst and catalyst carrier for chemical reaction.
ctivated alumina can selectively adsorb water in gases, vapors and some liquids. When the adsorption is saturated, the water can be removed and reactivated by heating at about 175-315 ~C. Adsorption and reactivation can be carried out many times. In addition to being used as a desiccant, it can also absorb the vapor of lubricating oil from contaminated oxygen, hydrogen, carbon dioxide, natural gas, etc. It can also be used as catalyst, catalyst carrier and chromatographic analysis carrier.
Activated alumina belongs to the category of chemical alumina. It is mainly used for adsorbents, water purifiers, catalysts and catalyst carriers. According to different uses, its raw materials and preparation methods are different.