The measurement of surface area of finely divided solids by the flow of gases through them

Abstract

An account is given of the theory and application of several procedures which have been used for determining the surface areas of finely divided solids, and which depend upon either the steady or the transient state of flow. Characteristic differences can arise between pore properties of microporous media determined by steady and by transient state methods which have at least in part received an explanation in terms of the heterogeneity of pore sizes and in the presence of some blind pores.