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

Authors

• Hosein Hoseini ¹
• Maryam Gorjizadeh ²
• Soheil Sayyahi ¹
• Amirhossein Shahbazi Kootenaei ³

1. Department of Chemistry, Mahshahr Branch, Islamic Azad University, Mahshahr, Iran.
2. Department of Chemistry, Shoushtar Branch, Islamic Azad University, Shoushtar, Iran.
3. Department of Chemical Engineering, Mahshahr Branch, Islamic Azad University, Mahshahr, Iran.

Abstract

HMCM-22 with a Si:Al molar ratio of 15:1 has been shown to effectively 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 filtration 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 effectively 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 filtration and reused for several cycles without considerable loss of activity.

Keywords

• Acetals
• Heterogeneous catalyst
• Protection
• HMCM-22