新型复合介孔材料HPMo/SBA-15的合成与表征

合成了一种新型复合介孔材料HPMo/SBA-15, 通过XRD, TEM, UV-Vis和IR等方法表征证明HPMo均匀且稳定地包藏到介孔材料SBA-15的由SiO2网络组成的孔壁中. 催化实验结果表明， 该材料在大分子催化裂化反应中具有很高的活性, 在大分子催化氧化反应中连续循环使用未发现活性组分流失, 显示了其在大分子催化和均相催化反应多相化中具有很好的应用前景.

Synthesis and Characterization of a New HPMo/SBA-15 Composite

A new mesosilica HPMo/SBA-15 with molybdophosphoric acid encapsulated into its framework was synthesized by adding HPMo into a sol-gel system involving hydrolysis of tetraethyl orthosilicate under the strong acidic conditions(pH<0).Its structure and physical-chemical properties were characterized by various methods,its catalytic activities were measured by the cracking of 1,3,5-triisopropylbenzene and oxidation reaction of 2,3,6-trimethylphenol.The results show that the mesosilica with molybdophosphoric acid encapsulated into its framework was insoluble and readily separable during the catalysis reactions,and was mesoporous materials with uniform mesopores and high specific surface areas,and also show that the HPMo is tightly encapsulated into the network of mesosilica walls and does not leach from the walls.HPMo/SBA-15 is the promising and new catalysts for acid-catalytic and redox-catalytic reactions,and the potential replacer of catalysts in the homogenous reaction to solve the separation and recycle problems.