Acta Chimica Sinica ›› 2004, Vol. 62 ›› Issue (18): 1738-1744. Previous Articles     Next Articles

SBA-15负载钒氧化物催化剂上甲烷选择氧化反应

汪晓星, 林宝敏, 杨薇, 郭倩, 张庆红, 王野   

  1. 厦门大学化学系固体表面物理化学国家重点实验室, 厦门, 361005
  • 投稿日期:2004-04-01 修回日期:2004-08-09 发布日期:2014-02-17
  • 通讯作者: 王野,E-mail:yewang@jingxian.xmu.edu.cn;Fax:0592-2183047. E-mail:yewang@jingxian.xmu.edu.cn
  • 基金资助:
    国家自然科学基金(Nos.20021002,20273054)、国家重点基础研究发展规划项目(No.G1999022408)和教育部留学回国启动基金资助项目.

SBA-15 Supported Vanadium Oxide Catalyst for Selective Oxidation of Methane

WANG Xiao-Xing, LIN Bao-Min, YANG Wei, GUO Qian, ZHANG Qing-Hong, WANG Ye   

  1. State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, Xiamen University, Xiamen 361005
  • Received:2004-04-01 Revised:2004-08-09 Published:2014-02-17

The VOx/SBA-15 has been found to be a better catalyst for the selective oxidation of methane to formaldehyde than SBA-15-supported Mo and W oxides. The influences of catalyst support and vanadium source on catalytic performances have been studied. The results show that SBA-15 is a better support than MCM-41 and Cab-O-Sil, and the catalyst with NH4VO3 as the precursor exhibits higher performances. The addition of phosphorus has been found to enhance slightly the selectivity to HCHO. Characterizations by XRD, N2 physical adsorption, Raman spectroscopy and H2-TPR suggest that the supported VOx species with loading amounts lower than 3 wt% be highly dispersed (probably as monomer) and contribute to the selective oxidation of methane to formaldehyde.

Key words: SBA-15, vanadium oxide, selective oxidation of methane, formaldehyde