Abstract
1. Methods for calculating the geometrical surface areas of the micropore walls in carbon adsorbents with nonuniform micropore structures are discussed. 2. Two methods for carrying out such calculations are considered, the one based on the theory of the volumetric filling of micropores (TVFM) and determination of the parameters of the Stoeckli adsorption equation, and the other involving determination of the parameters of the two-term TVFM equation. The results obtained by these two methods have been compared with those obtained by independent studies on water-vapor adsorption. 3. For an activated carbon with diffuse dispersion of micropores over pore diameters these three methods of calculation lead to essentially the same results, thus confirming the physical reality of the geometrical surface area, at least for the carbon adsorbents. 4. Specific surface areas calculated for microporous adsorbents by the BET method are shown to lack physical reality.
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Schedule a callMore From: Bulletin of the Academy of Sciences of the USSR Division of Chemical Science
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