Chemical Research in Chinese Universities ›› 2009, Vol. 25 ›› Issue (6): 924-928.

• Articles • Previous Articles     Next Articles

Partial Oxidation of Toluene on VOx-TiOx/SBA-15

FANG Ke-gong, WANG Bin and SUN Yu-han*   

  1. State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, P. R. China
  • Received:2008-12-05 Revised:2009-02-02 Online:2009-11-25 Published:2010-01-25
  • Contact: SUN Yu-han. E-mail: yhsun@sxicc.ac.cn
  • Supported by:

    Supported by the National Natural Science Foundation of China(No.20603046) and Innovation Foundation of Chinese Academy of Sciences(No.O6SC68).

Abstract:

A series of VOx-TiOx/SBA-15 catalysts was prepared by the grafting method. The catalysts were characterized by different techniques such as N2-sorption, TPR, UV-Vis and NH3-TPD in order to verify the vanadium and titanium species, and their catalytic properties were investigated for the partial oxidation of toluene. The results show that vanadium mainly existed in the forms of isolated tetrahedral and octahedral species at the low loadings. The introduction of a certain amount of titanium improved the dispersion of vanadium on the support and then the catalytic performance for toluene oxidation at the same vanadium content. Both toluene conversion and benzaldehyde selectivity, showed the maximum values and then decreased with increasing the amount of titanium in the catalyst.

Key words: Vanadium; Titanium; Partial oxidation; Toluene; Benzaldehyde