STRUCTURE-ANALYSIS OF MESOPOROUS MATERIAL FSM-16 - STUDIES BY ELECTRON-MICROSCOPY AND X-RAY-DIFFRACTION

High-resolution electron micrographs and X-ray powder diffraction patt erns for the mesoporous material FSM-16 and for silicate-organic compl exes derived from the layered polysilicate kanemite are presented. HRE M studies reveal information about the formation mechanism at the nano meter length scale, and X-ray powder diffraction data provides informa tion about the averaged structure in the samples. It is demonstrated t hat the FSM-16 material is formed from the layered silicate kanemite t hrough making a domain structure with hexagonal symmetry by condensati on of silicate, which might be derivative of kanemite sheets, and the 'folded sheet mechanism' should be modified. (C) 1998 Elsevier Science B.V. All rights reserved.