Energetics of Sulfur‐Carbon Interaction

The energetics of sulfur‐carbon interaction are studied using thermo‐desorption and immersion microcalorimetry experiments. Sulfur is incorporated in meso‐ and microporous carbons by impregnation either from the liquid phase or the vapor phase. Varying the temperature of impregnation enables to fill preferentially microporous domains (vapor impregnation) or both micro‐meso‐macro domains (liquid impregnation). The three carbons lead to similar immersion enthalpies per unit area for liquid sulfur. This suggests that they possess similar surface‐liquid interactions and that liquid sulfur, below the polymerization temperature, wets the whole surface accessible to nitrogen.