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Synthesis and characterization of methyl-functionalized MCM-48 molecular sieve

Authors： LIAO Nianjiao, FAN Yiqun

Units： State Key Laboratory of Materials - Oriented Chemical Engineering, College of Chemistry and Chemical Engineering, Nanjing University of Technology, Nanjing 210009, China

KeyWords： MCM-48 molecular sieve; methyltrimethoxysilane; methyl-functionalization; hydrothermal stability

ClassificationCode：O613.72; O611.4

year,volume(issue):pagination： 2012,32(3):17-21

Abstract：

Methyl-functionalized MCM-48 molecular sieve was prepared by grafting method using methyltrimethoxysilane as coupling agent. The prepared product was characterized by Fourier transform infrared (FT-IR), X-ray diffraction (XRD) and nitrogen adsorption-desorption. The experiment results indicated that the silyl group was substituted for the Si-OH group on the pore surface of MCM-48, and then the modified MCM-48 molecular sieve with reduced pore diameter, surface area and pore volume was successfully acquired by silylation. However, the modified MCM-48 remains the cubic ordered mesoporous structure. The hydrothermal stability and hydrophobicity of MCM-48 molecular sieve were improved by the silylation.

Funds：

国家自然科学基金(No.20776067)

AuthorIntro：

廖年礁(1985-),男, 江苏扬州人, 硕士, 从事介孔分子筛膜的制备与应用. ?通讯联系人, E-mail: yiqunfan@njut.edu.cn

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