Heats of immersion of active carbon in organic compounds. 1. Heat effects upon immersion of dry and moist active carbon in organic compounds

Autor: Gubkina, M. L., Nikolaev, K. M., Polyakov, N. S., Tatarinova, L. I.
Zdroj: Russian Chemical Bulletin; August 1991, Vol. 40 Issue: 8 p1534-1537, 4p
Abstrakt: Heats of immersion (wetting) in organic liquids are determined experimentally for active carbon samples, dry and wet to various degrees. It is shown that the heat of immersion of dry active carbon is related to the degree of accessibility of the depth of the micropores of the sorbent to the molecules of an organic compound. It is suggested that during immersion of moist active carbon the degree of displacement of water from the micropores by molecules of the wetting liquid is related to a steric factor, the ratio between the critical diameter of the adsorbate molecule and the size of the micropore. A method is proposed for calculating heat effects during wetting of active carbon with liquids to various degrees of wetness. The calculated values were compared with experimental data.
Databáze: Supplemental Index
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