The influence of vanadium oxides on WO_x/Al₂O₃ catalysts for oxidative desulfurization (ODS) of dibenzothiophene compounds, using H₂O₂ as oxidant agent, has been studied. Catalysts were characterized by TPR-H₂, SEM-EDS, XRD, N₂-physisorption, XPS and Raman spectroscopy. Vanadium oxide was found to modify the distribution of surface tungsten oxide species (WO₆ and WO₄) on alumina, furthermore, VOW species were not detected. The amount of WO₆ species increased considerably when vanadium oxide was added to catalysts. ODS catalytic tests showed that the bimetallic catalysts are more active than the monometallic. The addition of small V amounts to WO₃/Al₂O₃ improved their ODS activity considerably, which suggests that WO₆ species are more active than tetrahedral species.

研究了钒氧化物对以H ₂ O ₂为氧化剂的二苯并噻吩化合物氧化脱硫（ODS）的WO _x / Al ₂ O ₃催化剂的影响。通过TPR-H ₂，SEM-EDS，XRD，N _2-物理吸附，XPS和拉曼光谱对催化剂进行了表征。发现氧化钒改变了氧化铝上的表面氧化钨物质（WO ₆和WO ₄）的分布，此外，未检测到V O W物质。WO ₆的量当将氧化钒添加到催化剂中时，物种的数量大大增加。ODS催化测试表明，双金属催化剂比单金属催化剂更具活性。向WO ₃ / Al ₂ O _3中添加少量V可以显着提高其ODS活性，这表明WO ₆物种比四面体物种更具活性。