论文部分内容阅读
以硅溶胶或固体硅胶小球（８０～１２０ 目）作硅源，四氟化钛作钛源，在实验室成功地合成了钛硅－１（ＴＳ－１）分子筛。该方法省去了有机原料合成法中硅源、钛源的水解步骤，避免了具有副催化作用的锐钛矿ＴｉＯ２ 的生成，简化了操作，提高了制备的重复性；同时还可以降低昂贵模板剂ＴＰＡＯＨ的用量。采用ＸＲＤ、ＦＴ－ＩＲ、ＴＥＭ 技术以及环己酮氨氧化制备环己酮肟的反应对合成的分子筛进行了表征和催化性能评价，结果表明，分子筛具有ＭＦＩ拓扑学结构，与意大利Ｅｎｉｃｈｅｍ 专利法合成的ＴＳ－１分子筛结构相同；其中以硅溶胶作原料合成的ＴＳ－１ 分子筛与意大利Ｅｎｉｃｈｅｍ 专利法合成的分子筛性能相近
Silica sol or solid silica gel beads (80 ~ 120 mesh) as a silicon source, titanium tetrafluoride as a titanium source in the laboratory successfully synthesized titanium silicalite -1 (TS-1) molecular sieve. The method eliminates the hydrolysis steps of the silicon source and the titanium source in the synthesis of organic raw materials, avoids the generation of the anatase TiO2 with the sub-catalytic action, simplifies the operation and improves the preparation reproducibility; meanwhile, the expensive template Dosage of TPAOH agent. The synthesized zeolites were characterized and characterized by XRD, FT-IR, TEM and cyclohexanone oxime oxidation. The results showed that the zeolites had MFI topology and were synthesized with the Enichem patent TS-1 molecular sieve has the same structure. The TS-1 molecular sieve synthesized by using silica sol as the raw material has similar performance to the molecular sieve synthesized by the Italian Enichem patent method