Here, a hydrophilic fumed silica (F-SiO2) was used as a support, and we place phosphotungstic acid (HPW) onto the F-SiO2 via a simple impregnation method normally used to prepare a HPW/F-SiO2 catalyst, which is used in oxidative desulfurization processes. A number of characterization analyses were used, such as X-ray diffraction, Fourier transform infrared, and Transmission electron microscopy, to prove that the HPW catalyst was homogeneously distributed on the F-SiO2. The structural parameters of the catalyst and the support were tested with Brunauer-Emmett-Teller, and it was confirmed that the catalyst is a mesoporous material. Energy-dispersive spectrometry was used to characterize the distribution of the active component distribution. Catalytic performance was investigated using the catalytic oxidative desulfurization process. During optimal conditions, the removal effect of dibenzothiophene (DBT) in simulated oil can reach 100%. After 13 cycles, catalytic activity is still high, and the DBT conversion can still attain 95.362%.

中文翻译：

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气相法二氧化硅在氧化脱硫中的应用。

在这里，使用亲水性气相二氧化硅（F-SiO2）作为载体，并通过通常用于制备HPW / F-SiO2催化剂的简单浸渍方法将磷钨酸（HPW）置于F-SiO2上。在氧化脱硫过程中。使用了许多表征分析，例如X射线衍射，傅立叶变换红外和透射电子显微镜，以证明HPW催化剂均匀分布在F-SiO2上。用Brunauer-Emmett-Teller测试了催化剂和载体的结构参数，证实了该催化剂是介孔材料。能量分散光谱法用于表征活性成分分布的分布。使用催化氧化脱硫工艺研究了催化性能。在最佳条件下，模拟油中二苯并噻吩（DBT）的去除效果可达到100％。经过13个循环后，催化活性仍然很高，DBT转化率仍可达到95.362％。