Some people ask us what is the adsorption Principle of Activated Alumina Adsorbent. In here, we will simply introduce it.

What is the Adsorption Principle of Activated Alumina Adsorbent? With the development of industrial gas preparation technology, activated alumina adsorbent began to have a higher status. Activated alumina adsorption refers to the presence of two phases, the phase dissolved in the solute or phase of the material in the phase and phase near the interface in the same phase with the phenomenon. The interaction of the activated alumina adsorbent with the energy present in the adsorptive mass is the force of adsorption, which is borne by electrons.
The main reason for the physical adsorption of activated alumina is the effect of the van der Waals force, which is caused by the momentary asymmetric dipole of the electrons in the atom or molecule. During the physical adsorption process, the surface of the activated alumina adsorbent and the adsorbed molecules will not change. Chemical adsorption is the principle of active alumina adsorbent surface and adsorption between the existence of a chemical role, that is, between the two have the exchange of electrons, transfer or common, and thus lead to the destruction and formation of chemical bonds, resulting in atomic weight row. Chemical adsorption usually occurs at the active sites such as unsant carbon atoms on the edge, and there is a fixed adsorption site and the adsorbed molecules can not move along the surface.
Typically, the physical adsorption of activated alumina is carried out quickly and is a reversible process. Under certain conditions, the adsorbed gas can be completed without changing the gas and solid surface properties under the premise of quantitative desorption. Physical adsorption is an exothermic process in which the heat of adsorption is close to the liquefaction heat of the gas. The physical adsorption of the gas is very similar to the liquefaction process and is usually carried out at a relatively low temperature, such as near the boiling point of the adsorbate gas. The chemical adsorption process is usually an irreversible adsorption process, the analysis is very difficult. And the process of precipitation occurs accompanied by chemical changes in the product precipitation, the adsorption process of adsorption heat and chemical reaction heat similar to most of the exothermic process. Because of the need for activation energy throughout the adsorption process, it is usually necessary for chemical adsorption to be carried out at higher temperature conditions.

In above,  Zibo Xiangrun and Shandong Bairui simply introduce adsorption Principle of Activated Alumina Adsorbent.