利用过饱和浸渍法制备TiO₂-β/SBA-15复合分子筛，通过XRD、SEM-EDS对复合分子筛进行表征，并将其应用于静态光催化氧化柴油脱硫实验。提出了光催化氧化脱硫的反应机理，并通过GC/AED检测器与Ba （NO₃）₂滴定实验证明了反应机理。考察了催化剂质量浓度、n（H₂O₂）/n（S）、反应温度和反应时间对静态光催化氧化脱硫实验的影响。实验结果表明，TiO₂-β/SBA-15复合分子筛具有良好的催化反应性能，当催化剂质量浓度为4 g/L、n（H₂O₂）/n（S）为2.5、反应温度为60℃、反应时间为3 h时，模拟柴油的脱硫率高达92.3%。

TiO₂-β/SBA-15,a composite molecular sieve,is prepared by supersaturated impregnation method and is then characterized by XRD and SEM-EDS.It is applied to the static photocatalytic oxidation desulfurization of diesel.The reaction mechanism for photocatalytic oxidation desulfurization is proposed and proved by means of GC/AED detector and Ba(NO₃)₂ titration experiment.The effects of the mass concentration of catalyst,n(H₂O₂)/n(S),reaction temperature and reaction time on the static photocatalytic oxidation desulfurization are investigated.The experimental results illustrate that TiO₂-β/SBA-15 exhibits excellent catalytic reaction performance.The desulfurization rate of simulated diesel oil can reach 92.3% when the amount of TiO₂-β/SBA-15 is 4 g·L^-1,n(H₂O₂)/n(S) is 2.5,the reaction temperature is at 60℃ and the reaction lasts for 3 hours.

赵帅(1992-),男,硕士研究生,研究方向为清洁燃料生产,1445521419@qq.com