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Convenient solvent-free synthesis and characteristics of acid–base bifunctionalized MCM-41 mesoporous silicas

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Abstract

A series of acid–base bifunctionalized mesoporous silicas have been successfully synthesized by means of a convenient solvent-free approach. Through grinding the precursors, aluminium and magnesium nitrates, with the as-prepared MCM-41, and then the generation of acid–base sites and removal of host template were simultaneously completed in the subsequent calcination procedure. The resultant modified mesoporous silicas MgO–Al2O3–MCM-41 were characterized with X-ray diffraction, high-resolution transmission electron microscopes, N2 adsorption, FT-IR spectra, 29Si and 27Al MAS NMR, NH3− and CO2− temperature programmed desorption. The results indicate that the products exhibit excellent acid–base properties with well mesoporous structure, and the guests were well dispersed in the channel of MCM-41, which make it exhibit high activity for the synthesis of EMC.

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Acknowledgments

The authors are grateful for the National Natural Science Foundation of China (No. 21076152), Research Programme of Applied Basic & Cutting-edge Technologies of Tianjin under Contract No. 08JCZDJC17300.

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Authors and Affiliations

  1. Key Laboratory for Green Chemical Technology of State Education Ministry, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, People’s Republic of China

    Hua Wang, Lizhi Liang, Wenjuan Zhang & Jinyu Han

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  1. Hua Wang
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  2. Lizhi Liang
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Correspondence to Hua Wang.

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Wang, H., Liang, L., Zhang, W. et al. Convenient solvent-free synthesis and characteristics of acid–base bifunctionalized MCM-41 mesoporous silicas. J Porous Mater 19, 889–895 (2012). https://doi.org/10.1007/s10934-011-9546-x

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