Chemical Research in Chinese Universities ›› 2005, Vol. 21 ›› Issue (3): 264-267.

• Articles • Previous Articles     Next Articles

12-Tungstophosphates Immobilized on Chemically Modified Mesoporous Silica SBA-15

ZHU Jing, YOU Wan-sheng, ZHU Zai-ming, SUN Zhen-gang, ZHANG Lan-cui, GU Yuan-peng   

  1. Faculty of Chemistry and Chemical Engineering, Liaoning Normal University,Dalian 116029, P. R. China
  • Received:2004-05-19 Online:2005-05-24 Published:2011-08-06
  • Supported by:

    Supported by the Dalian Municipal Science and Technology Commission and Liaoning Provincial Science and Technology Commission(No.200310592003).

Abstract: A functionalized material, PW/SBA-15m, was prepared successfully in diluted H2SO4 aqueous solutions by immobilizing 12-tungstophosphates on chemically modified mesoporous silica SBA-15 and characterized by elemental analysis, FTIR, 31P MAS NMR, XRD and TEM. The results indicate that the framework of SBA-15 and the Keggin structure of PW12O403- were retained, and that 23%-33%(mass fraction) of PW12O403- was immobilized; the PW12O403- anions were finely dispersed on the pore wall of SBA-15. Having been leached in ethanol at 60 ℃ for 7 h, the loss of PW12O403- anions was not found.

Key words: Polyoxometalates, 12-Tungstophosphates, SBA-15, Mesoporous materials