Thermodynamics of Adsorption of Methane and Carbon Dioxide on Microporous Adsorbents at Temperatures above Critical Values

摘要

The earlier-shown possibility that the isotherms of adsorption on microporous adsorbents at tem?peratures above the critical values can be described with the Dubinin-Radushkevich and Tolmachev-Ara-novich equations is confirmed by describing the experimental isotherms of adsorption of methane and carbon dioxide on microporous AUK and PAU-10 coals at temperatures above critical values; in the above-men-t ioncd equations, the pressure of saturated adsorbate vapors used as a standard pressure at temperatures below critical values is substituted for the standard pressures (P~*) that are determined through extrapolating the dependences of the logarithm of the saturation vapor pressure for the adsorptive on an inverse temperature over the supercritical temperature range.