复合介孔材料磷钼酸／二氧化硅的合成及其催化性能

Synthesis and catalytic properties of mesoporous HPMo/SiO_2 composite

合成了一种新型磷钼酸/二氧化硅(HPMo/SiO2)复合介孔材料。在酸性条件合成介孔SiO2的过程中直接加入磷钼酸,磷钼酸通过与硅羟基的氢键作用结合并随着硅物种的缩聚而固载在SiO2骨架上。研究结果表明HPMo分子均匀地包藏到介孔SiO2网络组成的孔壁中。该材料在有机硫化物二苯并噻吩的氧化反应中具有很高的催化活性和良好的重复使用性能。

A novel mesoporous HPMo/SiO2 composite has been synthesized from a main strategy of adding HPMo into the synthetic process of mesoporous silica in acid environment. In the process HPMo combines with silicon hydroxide radical by hydrogen bond and enters into mesoporous framework by silicon species fasculation. HPMo has been immobilized in the SiO2 framework. The mesoporous composite shows a high catalytic activity and reusability, which is a promising catalyst for oxidative desulfurization.