Microwave radiation one-pot synthesis of chloropropyl-functionalized mesoporous MCM-41

Abstract

Chloropropyl-functionalized mesoporous MCM-41(MCM-41-(CH₂)₃Cl) was synthesized in alkaline medium by the microwave radiation one-pot method, using cetyltrimethy-lammoniumbromide (CTAB) as novel template, tetraethoxysilane (TEOS) as silica source, and chloropropyltriethoxysilane (ClPTES) as the coupling agent. The microstructure of MCM-41-(CH₂)₃Cl was characterized by the means of X-ray diffraction (XRD), nitrogen absorption-desorption, Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The results show that a successful synthesis of MCM-41-(CH₂)₃Cl with well structure is obtained. The optimal microwave power is 120 W and the best microwave time is 50 min. The dosage of chloropropyltriethoxysilane on the structure of chloropropyl-functionalized MCM-41 was also investigated. It is found that the chloropropyltriethoxysilane volume between 0.8 mL and 1.6 mL is favorable for the formation of highly ordered MCM-41-(CH₂)₃Cl mesostructure.

Keywords

microwave / one-pot synthesis / chloropropyl / modification / MCM-41

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