This paper presents a detailed analysis of adsorption of supercritical fluids on nonporous graphitized
thermal carbon black. Two methods are employed in the analysis. One is the molecular layer structure
theory (MLST), proposed recently by our group, and the other is the grand canonical Monte Carlo (GCMC)
simulation. They were applied to describe the adsorption of argon, krypton, methane, ethylene, and sulfur
hexafluoride on graphitized thermal carbon black. It was found that the MLST describes all the experimental
data at various temperatures well. Results from GCMC simulations describe well the data at low pressure
but show some deviations at higher pressures for all the adsorbates tested. The question of negative
surface excess is also discussed in this paper.
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