Synthesis of highly regular mesoporous Al-MCM-41 from metakaolin

Abstract. Mesoporous molecular sieve Al-MCM-41 with Si/Al ratio=5, was in situ synthesized under hydrothermal condition using tetraethylorthosilicate (TEOS) and metakaolin as silica and aluminum sources and cetyl trimethylammonium bromide as structure directing agent. Powder X-ray diffraction (XRD), solid-state magic-angle spinning (MAS) NMR spectroscopy, Fourier transform infrared spectros…