Reducing the crystal size and creating intra/inter-crystalline mesoporosity or macroporosity are two options to enhance the mass transportation efficiency in microporous zeolites. In this study, an improved aerosol-assisted hydrothermal method was used to synthesize small-crystal Titanium silicalite-1 (TS-1) with low template amount. By using a more concentrated template agent the particle size of the TS-1 crystal can be reduced from 350-800 nm to 230–270 nm. A well-dispersion of the Ti species can be achieved under optimized synthesis condition. A post-treatment with tetrapropyl ammonium hydroxide (TPAOH) was used to further improve the diffusion property. The mesopore volume and external surface areas are significantly increased due to the formation of the intracrystalline voids. All the TS-1 samples were evaluated in propene epoxidation. The conversion of H₂O₂ and the selectivity of Propylene Oxide are 99.9% and 98%, which are improved as compared to those of the parent TS-1.

减小晶体尺寸并产生晶体内/晶体间的中孔性或大孔性是提高微孔沸石的传质效率的两种选择。在这项研究中，一种改进的气溶胶辅助水热法被用来合成低模板量的小晶体钛硅沸石-1（TS-1）。通过使用浓度更高的模板剂，TS-1晶体的粒径可以从350-800 nm减小到230-270 nm。在优化的合成条件下可以实现Ti物种的良好分散。使用四丙基氢氧化铵（TPAOH）进行后处理可进一步改善扩散性能。中孔体积和外表面积由于晶内空隙的形成而显着增加。在丙烯环氧化中评估了所有TS-1样品。与母体TS-1相比，₂ O ₂和环氧丙烷的选择性分别为99.9％和98％。