Sucking phenomenon is a phenomenon that occurs at the interface of two different phases. The sucking process is the diffusion process at the interface, which is the sucking on the solid surface. The sucking can be divided into physical sucking and chemical sucking. Chemical adsorption is caused by chemical reaction between the surface of the adsorbent and the adsorbate molecules. It involves the destruction and recombination of chemical bonds in the molecule. Therefore, the adsorption heat of the chemisorption process is larger than that of the physical process. Adsorption is superior to adsorption of non-aromatic compounds, adsorption of hydrocarbons with branched bonds is better than adsorption of linear hydrocarbons; adsorption of organic-containing substances is always lower than adsorption without inorganic genetic substances. The adsorption of compounds with large molecular weight and high boiling point is higher than that of compounds with low molecular weight and low point; the higher the concentration of adsorbate, the higher the adsorption amount; the larger the internal surface area of the adsorbent, the higher the adsorption amount.
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