【摘要】 以四丙基氢氧化铵（TPAOH）为模板剂、正硅酸乙酯（TEOS）为硅源、钛酸四丁酯（TBOT）为钛源，将溶胶冷冻干燥后通过蒸汽辅助的方式晶化制备了小晶粒的TS-1分子筛。通过设计一步合成法或多步合成法考察了蒸汽辅助晶化过程对分子筛合成的影响，并采用SEM、XRD、FT-IR、UV-vis、XPS、N₂吸附-脱附等技术对催化剂进行了表征。在以噻吩正辛烷为模拟油的体系中，多步合成法得到的TS-1具有更好的催化活性和更丰富的多级孔结构，以水为分散介质、H₂O₂为氧化剂，反应80 min脱硫转化率可达96.42%。更多还原

【Abstract】 A sol was prepared using tetrapropyl ammonium hydroxide(TPAOH) as template agent, ethyl orthosilicate(TEOS) as silicon source, tetrabutyltitanate(TBOT) as titanium source. Then,the sol was freeze-dried and crystallized by steam assisted method to prepare small grain TS-1molecular sieve.The influence of the steam-assisted crystallization process on the synthesis of molecular sieves was explored by designing one-step synthesis method or multi-step synthesis method.The obtained catalysts were characterized by SEM,XRD,FT-IR,UV-vis,XPS,and N2adsorption-desorption techniques.The synthesized TS-1molecular sieve was applied to a system simulating thiophene octane as a model oil,and the multi-step synthesized TS-1showed better catalytic activity and richer multi-level pore structure.更多还原