Intraparticle heat and mass transfer characteristics of water vapor adsorption on porous material

摘要

Experimental studies were carried out which was based on the data of temperature inside the adsorbent particle and adsorptivity profiles at the adsorption/desorption process by volumetric method by using relatively large silica-gel particle. The temperature profiles show that the temperature at the surface is initially slightly higher than that at the center. All points reached their respective maximum temperature at the same time with the temperature at the center point the highest and at the surface the lowest. This shows that the adsorption phenomena can take place not only at the surface but inside the adsorbent particle, implying that intraparticle vapor diffusion has a great influence on adsorptivity.