以改良的Stober方法制得的介孔硅球为硅源兼硬模板剂，合成硅铝摩尔比为30的多级孔ZSM-5分子筛。采用XRD、FESEM、N₂吸附-脱附、NH₃-TPD等手段对合成的样品进行表征，研究晶化温度、晶化时间、晶化方法对分子筛形貌和结构性能的影响，并将其应用于甲醇制芳烃（Methonal to Aromatics，MTA）反应。结果表明，以介孔硅球作为硅源兼硬模板剂，在110℃条件下晶化72 h能够得到结晶度较高的ZSM-5分子筛，该分子筛含有丰富的介孔及大孔，比表面积高达529 m²/g，且在MTA反应中表现出比较好的催化稳定性。

Mesoporous silica sphere prepared by the modified Stober method is used as silicon source and hard template to synthesize hierarchical pore ZSM-5 molecular sieve with Si/Al ratio of 30.The obtained samples are characterized by XRD,FESEM,N₂ adsorption-desorption and NH₃-TPD.The effects of temperature,time and method of crystallization on the morphology and structural performance of molecular sieve are investigated.The catalytic performance of samples is evaluated through applying to methanol to aromatics (MTA) reaction.The results show that the ZSM-5 molecular sieve with high crystallinity can be made through using mesoporous silica sphere as silicon source and hard template and performing crystallization at 110℃ for 72 h.This molecular sieve has rich mesopores and macropores with a specific surface area of 529 m²·g^-1,and exhibits better catalytic stability in MTA reaction.

佟鑫(1989-),女,硕士研究生,主要从事催化剂和化工工艺开发工作,celine0610@163.com