Mesopore size and surface area calculations for hexagonal mesophases (types MCM41, FSM-16, etc.) using low-angle XRD and adsorption data

This paper is devoted to the geometry of mesoporous mesophase systems (MMSs ) of the MCM-41 or FSM-16 texture types. The interrelations among surface a reas inside and outside the mesoporous blocks of the MMS, of the size and t he volume of mesopores are discussed. The equations for calculating these t extural characteristics are derived. These equations are based on adsorptio n data and X-ray diffraction studies, and are applied for considerations of the silica and zirconia hexagonal MMS texture. The approach was used for a critical review of the results published by other authors for similar syst ems. (C) 1999 Elsevier Science B.V. All rights reserved.