The accessible TiO₆ concentration and the hydrophobicity of hierarchical TS-1 zeolites are both considered as critical factors for promoting the catalytic performance of selective oxidation. However, simultaneously enhancing these two factors still remains a challenge. Herein, hierarchical TS-1 zeolites with high hydrophobicity and concentration of accessible TiO₆ were fabricated via sequential amphiphilic organosilane-assisted pre-treatment, dry-gel conversion and hydroxyl radical post-treatment, using amphiphilic organosilane and surfactant as meso-porogens. The synthesis mechanism was investigated, and it was found that the interaction between the amphiphilic organosilane and Ti species formed during the pre-treatment benefited the formation of accessible TiO₆ during the subsequent dry-gel conversion. During the post-treatment of zeolite with H₂O₂ solution under ultraviolet light irradiation, appropriate H₂O₂ concentration facilitated the generation of hydroxyl radical and thus enhanced the hydrophobicity of zeolite without significantly influencing the TiO₆ concentration. The hierarchical TS-1 displayed excellent catalytic performances in 1-hexene epoxidation and oxidative desulfurization, with conversion improvements of 91.2%±2.8% and 348%±17%, respectively, compared with the conventional counterpart.

分级TS-1沸石的易接近的TiO ₆浓度和疏水性都被认为是促进选择性氧化催化性能的关键因素。然而，同时增强这两个因素仍然是一个挑战。本文以两亲性有机硅烷和表面活性剂为内消旋，通过连续的两亲性有机硅烷辅助预处理、干凝胶转化和羟基自由基后处理，制备了具有高疏水性和高浓度可接近TiO ₆的分级TS-1沸石。-致孔剂。研究了合成机理，发现两亲性有机硅烷与预处理过程中形成的Ti物质之间的相互作用有利于随后干凝胶转化过程中易接近的TiO _{6的形成。}紫外光照射下H ₂ O ₂溶液对沸石进行后处理时，适当的H ₂ O ₂浓度有利于羟基自由基的产生，从而增强了沸石的疏水性，且对TiO _{6的性能影响不明显。}专注。分级TS-1在1-己烯环氧化和氧化脱硫中表现出优异的催化性能，与传统对应物相比，转化率分别提高了91.2%±2.8%和348%±17%。