“…Findenegg's results for the adsorption of ethylene on graphitized carbon black Ž . Specovius and Findenegg, 1980 indicate that the density profile in the interfacial region of a supercritical fluid near an adsorbing surface, becomes long range as the critical point is approached. In microporous materials commonly used in engineering applications, the depth of the density profile is limited by the pore size.…”