正硅酸乙酯（TEOS）作为合成ZSM-5分子筛的常用硅源,其在不同酸碱介质中水解的前驱体聚合状态对ZSM-5分子筛的粒径和孔径分布具有调控作用。以酸性介质TEOS水解缩合的前驱体为硅源,在水热条件下合成ZSM-5分子筛,并利用XRD、SEM、BET、FI-IR等方法对反应不同阶段的样品进行表征分析。主要考察了水解程度、水解时间、合成过程的pH、晶化温度、晶化时间及模板剂用量对ZSM-5分子筛合成过程的调控,结果表明：以乙醇为共溶剂,以TEOS在硫酸介质pH=2.0时水解20 h的前驱体为硅源,水热合成过程中加入模板剂四丙基氢氧化铵（TPAOH）,铝源为氢氧化铝,180 ℃晶化30 h合成了粒径约为200 nm的ZSM-5分子筛,其比表面积提高了35.6%,平均孔径降低了48.6%。

Tetraethyl orthosilicate（TEOS） is usually used as the silicon source for the synthesis of ZSM-5 zeolite.The polymerization state of the precursors hydrolyzed in different acid-base media had a regulatory effect on the grain size and pore size distribution of ZSM-5.The precursor of hydrolysis and condensation of TEOS in acidic medium was used as the silicon source.ZSM-5 was synthesized under hydrothermal conditions,and the samples at different stages during the reaction were characterized by XRD,SEM,BET and FI-IR.The effects of hydrolysis degree,hydrolysis time,pH of synthesis process,crystallization temperature,crystallization time and template dosage on the synthesis of ZSM-5 zeolite were investigated.The results showed that when the ethanol was used as co-solvent,the precursor of TEOS hydrolyzed for 20 h in sulfuric acid medium（pH=2.0） was used as silicon source,tetrapropylammonium hydroxide（TPAOH） was added during the hydrothermal synthesis process,and Al（OH）₃ was used as aluminum source,the ZSM-5 zeolite with the crystal grain size（about 200 nm） was synthesized that crystallized at 180 ℃ for 30 h.The specific surface area of ZSM-5 zeolite was increased by 35.6% and the average pore size was decreased by 48.6%.