Abstract
The adsorption isotherms of N 2 at 77K, CO 2 at 251, 273 and 298K, and SO 2 at 262 and 273K have been determined on a series of physically activated carbons with a wide range of micropore size distributions. Since the series includes carbons with very high burn-off, it shows the problems involved in the characterization of microporsity in superactivated carbons. On the other hand, the results show that the carbon surface-adsorbate interactions for SO 2 at low relative pressures are weaker than for N 2 and CO 2, as a result of the strong adsorptive-adsorptive interactions in the bulk gas phase.
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