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) measurement based on the analysis of unspecific adsorption interactions of some fluid with both components that exist on the surface of porous bicomponent solid is verified. For this purpose, adsorption studies of a model silica/alumina admix and a series of carbon-mineral adsorbents have been carried out. The obtained values of components’ ASAs correlate well with the values measured by an alternative technique, regardless of the type of an adsorbate used, operational temperature, and examined componentʹs type. It is discussed that the earlier proposed adsorption or chemisorption techniques, which are based on adsorbate interactions with only one component on the surface, can be considered as particular cases of the new method.