Acta Phys. -Chim. Sin. ›› 2004, Vol. 20 ›› Issue (01): 81-84.doi: 10.3866/PKU.WHXB20040117

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Organic-Inorganic Hybrid Mesoporous Materials Assembled from Sodium Silicate and Organotrialkoxysilane

Yu Ning-Ya;Gong Yan-Jun;Wu Dong;Sun Yu-Han; Luo Qing;Liu Wu-Yang;Deng Feng   

  1. State Key Laboratory of Coal Conversion, Shanxi Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001; State Key Laboratory of Magnetic Resonance and Atomic Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071
  • Received:2003-06-19 Revised:2003-08-19 Published:2004-01-15
  • Contact: Sun Yu-Han

Abstract: The MSU-typed mesoporous organosilica with organic methyl, vinyl, and phenyl functionals were prepared by using inexpensive sodium silicate and organotrialkoxysilane as the silica precursor and nonionic polyethyleneoxide AEO9[C11-15H23-31(CH2CH2O)9H] as the structure-directing agent. The resultant materials were characterized by powder X-ray diffraction (XRD), N2 sorptometry, high resolution transmission electron microscopy (HRTEM) and 29Si CP MAS-NMR. The results indicated that addition of sodium fluorite reduced the possibility of organotrialkoxysilane with small organic group entering the framework walls of the mesostructures at neutral condition. Moreover, pore diameter of material increased upon the increase of pH value.

Key words: Organic functionalization, MSU mesoporous molecular sieves, Sodium silicate