CHARCOAL SORPTION STUDIES: I. THE PORE DISTRIBUTION IN ACTIVATED CHARCOALS

Abstract

The pore distributions of three activated charcoals have been calculated from the low temperature nitrogen and water isotherms. The method of Barrett, Joyner, and Halenda has been used with the nitrogen data, while the Kelvin equation has been applied to the water isotherm. The two curves coincide if cos θ = 0.65 is used in the Kelvin equation, where θ is the wetting angle. This figure is in general agreement with a published figure obtained by an independent method.