REVIEWS
Copyright © 2010 Mecanum Inc. unless otherwise noted.
Mecanum
Noise Control Services
Specific surface
The specific surface (in m˛/kg) of an open-cell porous material is the internal pore area (~wet surface) per unit mass of solid. This specific surface can be obtained by the classical BET technique [1] generally used for powders in chemistry. The specific surface (So) can be estimated from the following relation [2]:
where Λ′ is the thermal characteristic length, ϕ is the open porosity and ρ1 is the bulk density of the porous aggregate.
[1] S. Brunauer, P. H. Emmet, and E. Teller, J. Am. Chem. Soc. 60, 309 (1938).
