Applicability verification for a new method of measuring the components' surface areas in bicomponent catalysts and adsorbents

Efficiency of a new method of components accessible surface areas (ASAs) me asurement based on the analysis of unspecific adsorption interactions of so me fluid with both components that exist on the surface of porous bicompone nt solid is verified. For this purpose. adsorption studies of a model silic a/alumina admix and a series of carbon-mineral adsorbents have been carried out. The obtained values of components' ASAs correlate well with the value s measured by an alternative technique, regardless of the type of an adsorb ate used, operational temperature. and examined component's type, It is dis cussed that the earlier proposed adsorption or chemisorption techniques. wh ich are based on adsorbate interactions with only one component on the surf ace, can be considered as particular cases of the new method. (C) 2001 Else vier Science B.V. All rights reserved.