TS-1 is a typical microporous zeolite, which is hindering the timely diffusion of reaction products and is likely to cause secondary side reactions in heterogeneous catalytic reaction due to the micropore size. However, zeolite TS-1 with hierarchical pores of micropores and mesoporous/macropores can solve this problem to a great extent. In view of this, hierarchical zeolite TS-1 is synthesized by using tetrapropylammonium hydroxide (TPAOH) as structure directing agent and polyacrylamide (PAM) as a hierarchical pore-directing template. The texture property of hierarchical TS-1 can be optimized by changing the amount of PAM in the synthesis gel. With the increase of PAM content, the pore volume and specific surface area of the hierarchical zeolite TS-1 increases. Compared with the conventional TS-1, the hierarchical TS-1 samples have obvious pore size distribution in the range of 20–80 nm. It is interesting that the particle size of TS-1 decreases after adding PAM. When the hierarchical TS-1 is applied to the epoxidation reaction of 1-hexene with H₂O₂, the selectivity of the desired product 1,2-epoxyhexane is significantly increased.

TS-1是一种典型的微孔沸石，由于微孔的大小，阻碍了反应产物的及时扩散，在非均相催化反应中容易引起二次副反应。然而，具有微孔和介孔/大孔分级孔的沸石TS-1可以在很大程度上解决这个问题。鉴于此，以四丙基氢氧化铵（TPAOH）为结构导向剂，聚丙烯酰胺（PAM）为分层导孔模板，合成了分层沸石TS-1。可以通过改变合成凝胶中 PAM 的量来优化分级 TS-1 的质地特性。随着PAM含量的增加，分级沸石TS-1的孔容和比表面积增加。与传统的TS-1相比，分级 TS-1 样品在 20-80 nm 范围内具有明显的孔径分布。有趣的是，添加 PAM 后 TS-1 的粒径减小。当分级TS-1应用于1-己烯与H的环氧化反应时₂ O ₂，所需产物1,2-环氧己烷的选择性显着提高。