Acta Chimica Sinica ›› 2002, Vol. 60 ›› Issue (9): 1596-1600. Previous Articles     Next Articles

Original Articles

表面功能化的介孔分子筛SBA-3的表征

贾雪平;杨春   

  1. 南京师范大学化学与环境科学学院,南京(210097)
  • 出版日期:2002-09-15 发布日期:2002-09-15

Characterization of Surface Functionalised Mesoporous Molecular Sieve SBA-3

Jia Xueping;Yang Chun   

  1. College of Chemistry and Environmental Science, Nanjing Normal University,Nanjing(210097)
  • Online:2002-09-15 Published:2002-09-15

The functionalised mesoporous molecular sieves were prepared by using 3-aminopropyltriethoxysilane (AM) to react with calcined pure siliceous SBA-3. By means of XRD, TEM, N_2 adsorption-desorption isotherms, FT-IR and UV-vis diffuse reflectance spectroscopy of adsorbed Relchardt's dye, the structure, the pore properties and the polarity on surface of the functionalised samples were characterized. It is shown that the hexagonal structural character is mostly retained after the functionalization. The population of silanol groups on the surface greatly decreases due to being consumed in the reaction with organosilane, resulting in a reduction in surface polarity. In addition, the pore volumes, surface areas and pore diameters of the functionalised samples decrease since the space within channels are partially occupied by the functional molecules.

Key words: MOLECULAR SIEVE, SILANE P, ADSORPTION, SURFACE AREA, PORE SIZE

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