The current view regarding adsorption by charcoal, silica gel, and other adorbents of high capacity is that the high capacity is due to the presence of capllaries. However, adsorption of gases or vapors in the low relative pressure egion is generally believed due to the formation of a monomolecular layer, nd estimates of surface area are based upon the amount of this adsorption, ailed Vm.The writers believe that the assumption of monolayer adsorption at low relaive pressures is wrong and that the generally accepted values of surface areas 1 This is a progress report on work supported by contract with the Office of Naval Re-;arch. The study was started as part of a research contract with the Chemical Corps,
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