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采用“pH-调节法”共合成得到不同钒含量的V-SBA-15催化剂，通过X射线粉末衍射、N2吸附、透射电镜、拉曼光谱、51V魔角旋转核磁共振谱、NHs-程序升温脱附、Hz-程序升温还原等手段对催化剂进行表征，并研究了其丙烷选择氧化反应的催化活性．结果表明，V-SBA-15催化剂保持SBA-15介孔分子筛的两维六方孔道结构，低含量时钒以高分散的孤立态四面体形式存在于分子筛的骨架中，高含量时出现聚集态的氧钒八面体物种．低钒含量的催化剂具有低酸量的弱酸性位和较低温度下的还原性，在丙烷选择氧化脱氢反应中表现出较高的催化活性．“,”V-SBA-15 catalysts with different content of vanadium were prepared through a “pH-adjusting” co-synthesis method. The catalysts were characterized with XRD, Nz sorption, TEM, Raman, slV NMR, NHz-TPD, and Hz-TPR techniques and their catalytic activity in selective oxidation of propane was investigated. The results indicated that the V-SBA-15 catalysts exhibited the ordered hexagonal structure similar to SBA-15. For the low V-loading catalysts with high catalytic activity the vanadium species were highly dispersed and mainly 4-coordinated. With increase of the loading, the appearance of octahedral vanadium species was observed which accounted for the decrease of catalytic activity.