| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 75750 | Microporous and Mesoporous Materials | 2008 | 6 Pages |
Abstract
The empirical linear relationship between the BET surface area SBET and the Freundlich constant KF, calculated from nitrogen adsorption isotherms of activated carbons, SBET = a0KF is mathematically demonstrated. This correlation exists in the relative pressure domain in which the BET equation is valid, whatever the value of c for the BET equation and for values of the Freundlich exponent, α, between 0 and 0.2. This study allows to determine the correlation factor a0 = 1/a with a=1SN2N(α+1)α+1αα. From this result, a new expression, depending of α and KF, can be deduced for calculating the specific surface area.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Catalysis
Authors
N. Passe-Coutrin, S. Altenor, D. Cossement, C. Jean-Marius, S. Gaspard,