Adsorption studies with various adsorptives from 77 K up to 323 K
Surfaces are formed by all solids as external interfaces and are present as micropores, mesopores, macropores or as external surfaces on non-porous particle areas. The results of gas adsorption measurements are the sum of particle surfaces including surface roughness and open pores. In principle, a complete isotherm or, for the determination of the BET surface area, only a part of an isotherm is measured. Figure 1 shows such sorption isotherms of nonporous carbon black, mesoporous glass and a microporous metal-organic framework, together with standard range to calculate BET surface areas.
