Preparation and application of HMCM-22 zeolite as an efficient solid acid catalyst for the synthesis of acetals

摘要

HMCM-22 with a Si:Al molar ratio of 15:1 has been shown to e?ectively catalyze the synthesis of acetals with 100% selectivity by the reaction of aldehydes with methanol under reflux conditions. Platelet HMCM-22 particles were prepared by the static strategy and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), BET techniques and N2-adsorption/desorption analysis. The catalyst was recovered by simple ?ltration and reused for several cycles without considerable loss of activity. HMCM-22 with a Si:Al molar ratio of 15:1 has been shown to e?ectively catalyze the synthesis of acetals by the reaction of aldehydes with methanol under reflux conditions. Platelet HMCM-22 particles were prepared by static method and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), BET techniques and N2-adsorption/desorption analysis. The catalyst was recovered by simple ?ltration and reused for several cycles without considerable loss of activity.