THE COMBINATION OF EQUILIBRIUM AND DYNAMIC METHODS FOR THE DETAILED STRUCTURAL CHARACTERIZATION OF CERAMIC MEMBRANES

The combination of equilibrium and dynamic techniques provides powerfu l tools for the characterisation of the porous structure of ceramic me mbranes. We present the type of information obtainable by the permeabi lity, adsorption and small angle scattering (SAS) methods and importan t combinations of them. Subsequently, we apply selected combinations o f the above methods to three characteristic ceramic membrane materials . (a) a mesoporous alumina produced by symmetric compaction, (b) a Vyc or(R)-type mesoporous silica, and (c) art asymmetric carbon membrane w ith a microporous gas-separating layer. Important conclusions are draw n regarding the pore and internal surface morphology of the studied me mbranes. (C) 1998 Elsevier Science Limited. All rights reserved.