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 areas inside and outside the mesoporous blocks of the MMS, of the size and the volume of mesopores are discussed. The equations for calculating these textural characteristics are derived. These equations are based on adsorption 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 systems. (C) 1999 Elsevier Science B.V. All rights reserved.