等级孔介孔-微孔TS-1分子筛单晶的合成及催化氯丙烯环氧化性能

针对当前钛硅型分子筛存在的微孔孔道孔径限制导致的流通扩散性能差及催化效率低等关键瓶颈问题, 通过在微孔分子筛中构筑跨尺度贯通高物质传输性能的等级孔道结构, 对钛硅分子筛(TS-1)晶体内等级孔道结构的可控构筑及其催化环氧化进行了研究, 成功制备出具有富含介孔孔道的等级孔介孔-微孔TS-1分子筛单晶材料(HTS-1), 其在氯丙烯催化环氧化反应中表现出了优异的催化活性及稳定性能.

Hierarchical Mesoporous-microporous TS-1 Single Crystal Catalysts for Epoxidation of Allyl Chloride

Epoxidation catalytic technology is important for preparing organic chemical raw materials and fine chemical products. But it has drawbacks such as low catalytic efficiency and serious pollution problem. The key to realize sustainable energy development is to develop green epoxidation catalytic techniques. Selective oxidation over titanosilicate zeolite TS-1 is the key to achieve green epoxidation process. Aiming at solving the intracrystalline diffusion limitations in microporous zeolites caused by their relatively small micropores， this paper focuses on design and synthesis of hierarchically mesoporous zeolite TS-1 single crystals， investigation and development of the synthesis methods， and the influence of hierarchically meso-microporous hierarchy on the catalytic epoxidation of allyl chloride performances. Compared with microporous zeolite TS-1， the hierarchically mesoporous zeolite TS-1 has better catalytic activity.