Wang Yong, Ren Lei, Li Zifeng, Xin Feng
Sinopec Research Institute of Petroleum Processing, Beijing 100083, China.
School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China.
Nanomaterials (Basel). 2022 Mar 28;12(7):1106. doi: 10.3390/nano12071106.
Hollow niobium oxide nanospheres were successfully synthesized by using prepared three-dimensional (3D) mesoporous carbon as the hard template. The 3D mesoporous carbon materials were prepared by using histidine as the carbon source and silica microspheres as the hard template. The samples were characterized by XRD, BET, SEM, TEM and other methods. The results show that the prepared niobium oxide nanospheres have a hollow spherical structure with an outer diameter of about 45 nm and possess a high specific surface area of 134.3 m·g. Furthermore, the 3D mesoporous carbon materials have a typical porous structure with a high specific surface area of 893 m·g. The hollow niobium oxide nanospheres exhibit high catalytic activity in oxidative desulfurization. Under optimal reaction conditions, the DBT conversion rate of the simulated oil is as high as 98.5%. Finally, a possible reaction mechanism is proposed.
以制备的三维（3D）介孔碳为硬模板，成功合成了中空氧化铌纳米球。采用组氨酸作为碳源、二氧化硅微球作为硬模板制备了3D介孔碳材料。通过XRD、BET、SEM、TEM等方法对样品进行了表征。结果表明，制备的氧化铌纳米球具有外径约为45 nm的中空球形结构，比表面积高达134.3 m²/g。此外，3D介孔碳材料具有典型的多孔结构，比表面积为893 m²/g。中空氧化铌纳米球在氧化脱硫反应中表现出较高的催化活性。在最佳反应条件下，模拟油中DBT的转化率高达98.5%。最后，提出了一种可能的反应机理。
