Synthesis and characterization of ionic liquid-functionalized alumino-silicate MCM-41 hybrid mesoporous materials

被引：49

作者：

Cai, Chao ^{[1
]}

Wang, Hua ^{[1
]}

Han, Jinyu ^{[1
]}

机构：

[1] Tianjin Univ, Sch Chem Engn & Technol, State Educ Minist, Key Lab Green Chem Technol, Tianjin 300072, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2011年 / 257卷 / 23期

基金：

高等学校博士学科点专项科研基金;

关键词：

Mesoporous materials; Functionalized MCM-41; Surface grafting; Skeleton doping; CATALYTIC PERFORMANCE; MOLECULAR-SIEVES; CO2; ACTIVATION; CARBON-DIOXIDE; AL-MCM-41; CONDENSATION; EPOXIDATION;

D O I：

10.1016/j.apsusc.2011.06.025

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Ionic liquid-functionalized alumino-silicate MCM-41 hybrid mesoporous materials have been synthesized with two-step approach, by means of in situ skeleton doping with aluminium and post surface grafting with N-methylimidazole ionic liquid groups. The samples were characterized by X-ray diffraction (XRD), high resolution transmission electron microscope (HRTEM), N-2 adsorption-desorption, Fourier transform infrared (FTIR) spectra, Al-27 and C-13 MAS NMR spectra and temperature-programmed desorption (TPD) of NH3. The results indicated that the bifunctionalized MCM-41 possessed ordered mesostructure. Aluminium was efficiently introduced into the framework of the mesostructure, generating Lewis and Bronsted acid sites. N-methylimidazole ionic liquid groups were covalently grafted onto the surface of mesoporous materials. The as-synthesized bifunctional MCM-41 showed good catalytic performance in the coupling reaction of CO2 and propylene oxide. (C) 2011 Elsevier B. V. All rights reserved.

引用

页码：9802 / 9808

页数：7

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