| Popis: |
It is shown that an exact expression can be derived from Dubinin's theory, for the enthalpy of immersion of active carbons. It appears that for a given liquid, the specific enthalpy of immersion is a function of the characteristic energy βE0 of the Dubinin-Astakhov equation. The new relation is illustrated by data obtained for 10 different carbons immersed into benzene and n-heptane at 34°C. Simultaneously, results are presented for the immersion into water, not described by Dubinin's theory, but providing useful complementary information about the chemical state of the surface. |
