Synthesis and Characterization of the Mesoporous Silicate Molecular Sieve MCM-48

Abstract

We have used powder X-ray diffraction, diffuse reflectance Fourier-transform infrared, 29 Si MAS NMR, N 2 adsorption, and transmission electron microscopy to examine the role of the concentration of silica, the surfactant, and the reaction time in the synthesis of high-quality silica mesoporous molecular sieve MCM-48. The XRD patterns of the products are consistent with the hexagonal → cubic → lamellar phase transformation.