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Ｖ_２Ｏ_５／ＴｉＯ_２体系引入Ｓｂ后催化剂的活性受到抑制，但苯甲醛选择性有所提高．在Ｓｂ／Ｖ＝０．０８（原子比），反应温度６７３Ｋ，氧浓度７％，空速１４０００ｈ~（－１）时，甲苯转化率为２２．８％，苯甲醛选择性６９．７％，产率为１５．９％．运用ＸＲＤ、ＴＰＲ、ＴＰＤ考察了助剂锑对Ｖ_２Ｏ_５／ＴｉＯ_２催化剂体系的体相结构，表面酸碱性及其还原性能的影响．结果表明，Ｓｂ的引入有利于Ｖ_２Ｏ_５的分散，催化剂表面酸中心数目减少，强度减弱，及Ｖ_２Ｏ_５还原温度提高，而表面高分散的Ｖ_Ｏ_５还原峰随Ｓｂ添加量增加出现极大值，反应过程也能够使Ｖ_２Ｏ_５更分散，有利于甲苯的选择氧化．
V2O5 / TiO2 system after the introduction of Sb catalyst activity was inhibited, but the selectivity of benzaldehyde increased. Under the conditions of Sb / V = 0.08 (atomic ratio), reaction temperature 673K, oxygen concentration 7% and space velocity 14000h -1, the conversion of toluene was 22.8% and the selectivity of benzaldehyde was 69.7% The yield is 15.9%. The effects of antimony as additive on the phase structure, surface acidity, basicity and reduction performance of V 2 O 5 / TiO 2 catalyst system were investigated by XRD, TPR and TPD. The results show that the introduction of Sb is favorable for the dispersion of V 2 O 5. The number of acid sites on the surface of the catalyst decreases, the intensity decreases and the reduction temperature of V 2 O 5 increases. However, the V_O 5 reduction peak with high surface dispersion increases with the addition of Sb and the reaction process can also V_2O_5 more dispersed, is conducive to the selective oxidation of toluene.