Synthesis and Characterization of Mesoporous Molecular Sieves Al/SO_4~(2-)/MCM-41

The Al/SO2-4/MCM-41 were prepared by modifying MCM-41 with Al2(SO4)3.The structures and surface acidity of Al/SO2-4/MCM-41 were characterized by X-ray diffraction(XRD),Fourier transform infrared spectroscopy(FT-IR),N2 adsorption-desorption and NH3 temperature programmed desorption(NH3-TPD).The results showed that the mesoporous molecular sieves Al/SO2-4/MCM-41 keeping up their hexagonal mesoporous structure can be obtained by modifying MCM-41 with Al2(SO4)3.