ADSORPTION BEHAVIOR OF HYDROCARBONS ON SLIT-SHAPED MICROPORES

Adsorption behavior of the hydrocarbons n-hexane, n-octane, cyclohexan e, neopentane, and benzene on microporous activated carbon fibers (ACF s) was studied by use Of molecular adsorption and adsorption calorimet ry. The calorimetric aspects were discussed in connection with pore ch aracteristics determined by nitrogen adsorption. The differential heat s of adsorption of hydrocarbon, as well as the integral heats on ACFs of narrower pore widths, tended to become higher than those of wider p ore widths, which is ascribed to micropore filling. These experimental results were also compared with the theoretical profile of the interm olecular interaction between adsorbates and adsorbents.