Adsorption by Powders and Porous Solids

Adsorption is the enrichment of material or increase in the density of the fluid close to an interface. Under certain conditions this results in an appreciable enhancement in the concentration of a particular component which is dependent on the surface or interfacial area. Thus all industrial adsorbents and the majority of industrial heterogeneous catalysts have large surface areas of 100 m2g-1 based on porous solids and/or highly particulate materials.7 In the simplest case for spherical particles of density r and all of diameter d, the specific surface area s, can be defined as  

Adsorption is brought about by the interactions between the solid and the molecules in the fluid phase. The forces involved are classified as chemisorption (chemical bonding) or physisorption (non-chemical bonding). Some of the main distinguishing features are  

Some of the principal terms and properties of adsorption, powders and porous solids are given in Table 1.2. 

---

F. Rouquerol, J. Rouquerol, K. Sing, Adsorption by Powders and Porous Solids, Academic Press, London, 1999. 

Adsorption by Powders and Porous Solids by Rouquerol, Rouquerol, and Sing [1]... 

---