Measurement of Porosity and Specific Surface Area by Gas Adsorption

What are Porous Materials?

Non-porous solid • Low specific surface area • Low specific pore volume	Porous solid • High specific surface area • High specific pore volume

Porous materials have highly developed internal surface area that can be used to perform specific function.

Almost all solids are porous except for ceramics fired at extremely high temperatures

F. Rouquerol , J. Rouquerol , K. S. W. Sing, Adsorption by Powders and Porous Solids, Academic Press, 1-25, 1999