采用浸渍法 ,制备了 Zn/HZSM- 5分子筛催化剂 .考察了锌含量、反应温度对丙烷芳构化反应的影响 ;根据产物分布情况 ,讨论了锌物种在丙烷芳构化反应中的作用 ;并以氮气作载气 ,带入烷基芳烃乙苯、二甲苯、甲苯 ,考察了温度对催化剂脱烷基反应的影响 .结果表明 ,锌物种不仅能够催化丙烷的脱氢活化 ,提高其转化率 ,而且能促进随后进行的齐聚、脱氢芳构化等一系列反应 ,提高芳烃的选择性 ,并进一步催化烷基芳烃的脱烷基反应 ,导致苯选择性上升 ,乙苯、二甲苯选择性下降 The Zn / HZSM-5 molecular sieve catalyst was prepared by impregnation method, and the effect of zinc content and reaction temperature on the aromatization of propane was investigated. The role of zinc species in propane aromatization was discussed according to the product distribution. The effect of temperature on the dealkylation of the catalyst was investigated by using nitrogen as the carrier gas and carrying the alkyl aromatic hydrocarbons such as ethylbenzene, xylene and toluene. The results showed that the zinc species could not only catalyze the dehydrogenation activation of propane and increase its conversion rate, But also promote a series of subsequent oligomerization, dehydroaromatization and a series of reactions to improve the selectivity of aromatics, and further catalyze the dealkylation of alkylaromatics, resulting in a rise of benzene selectivity, ethylbenzene, xylene selectivity decline