Studies on ordered mesoporous materials III. Comparison of MCM-41 to mesoporous materials derived from kanemite

MCM-41 and mesoporous materials derived from kanemite are synthesized and characterized by X-ray powder diffraction (XRD), N 2 adsorption-desorption, cyclohexane and water physical adsorption, scanning electron microscopy (SEM), transmission electron microscopy (TEM), thermogravimetric analyses (TGA), Fourier transform infrared (FTIR) and 13 C and 29 Si magic-angle spinning nuclear magnetic resonance (MAS NMR) spectroscopy. Both preparations yield mesoporous materials with narrow-pore-size distributions and somewhat similar physicochemical properties. However, due to a higher degree of condensation in the silicate walls of the materials derived from kanemite, these samples have higher thermal and hydrothermal stability than MCM-41. Additionally, the mechanisms by which these two types of materials are formed are dramatically different.