A series of ZSM-5 zeolites with tunable mesoporosity were synthesized by a facile ultrasound-assisted method. XRD, FT-IR and NH₃-TPD results exhibited that as-synthesized ZSM-5 kept the MFI structure as well as the original acidity. Traced by TEM techniques, the crystallization process, especially the state of initial amorphous gel, was found notably affected by the ultrasound treatment by breaking the weak bonds, which led to formation of mesopores in crystals. The ZSM-5 catalysts with abundant mesoprores inhibited coking significantly and showed high catalytic stability for methanol to propylene reaction. The Z5-us-60 catalyst exhibited the highest catalytic stability for >600 h at a high WHSV of 4.0 h⁻¹.

通过简便的超声辅助方法合成了一系列具有可调介孔率的ZSM-5沸石。XRD，FT-IR和NH ₃ -TPD结果表明，合成后的ZSM-5保持MFI结构以及原始酸度。通过TEM技术追踪，发现结晶过程，特别是初始无定形凝胶的状态，通过破坏弱键而受到超声处理的显着影响，这导致晶体中孔的形成。具有丰富介孔的ZSM-5催化剂可显着抑制焦化，并显示出高的甲醇至丙烯反应催化稳定性。Z5-us-60催化剂在4.0 h ^-1的高WHSV下表现出> 600 h的最高催化稳定性。