双杂原子介孔材料的合成及催化应用

Synthesis of Bimetallic Modified Mesoporous Material and Its Application in Catalysis

在强酸性条件下,采用沸石前驱体溶液与表面活性剂自组装的方法,合成了双杂原子掺杂的介孔催化材料Sn/Ti-MS-1.表征结果显示,Sn/Ti-MS-1具有介孔结构,骨架中含有TS-1沸石的结构单元.在苯酚和2,3,6-三甲基苯酚的双氧水氧化反应中,焙烧前后的Sn/Ti-MS-1均表现出了良好的催化反应活性,表明其钛物种具有良好的热稳定性,并且在大分子氧化反应中具有明显的优势.同时,这种Sn/Ti双杂原子介孔材料显示了较快的催化反应速率.

Bimetallic（Sn/Ti） modified mesoporous material with thermally stable and highly active Ti-sites（Sn/Ti-MS-1） was synthesized by the assembly of Sn-incorporated TS-1 precursor with surfactant in acidic media.The characterization results indicated that the material has typical mesostructure and the mesoporous framework contains zeolitic building units.In the oxidation of phenol and 2,3,6-trimethylphenol with aqueous H2O2,as-synthesized and calcined Sn/Ti-MS-1 both showed good catalytic conversions,indicating that the active Ti-sites are highly thermally stable and that the material is favorable in the oxidation of bulky substrates.Also,Sn/Ti-MS-1 displayed high reaction rate in the oxidation of 2,3,6-trimethylphenol.