采用水热法晶化得到纳米板状孪晶型HZSM-5，通过NaOH或TPAOH处理调变ZSM-5的孔结构。结果表明，NaOH处理将贯通的介孔结构引入微孔ZSM-5中，而TPAOH处理得到多空腔结构，空腔通过微孔与外界连通。对具有不同孔结构的ZSM-5进行Zn改性，并用于甲醇制芳烃反应。通过XRD、SEM、TEM和氩气物理吸附分析不同样品的结构；利用NH₃-TPD测定不同样品的酸量；通过XPS分析不同样品的Zn状态。具有多空腔结构的Zn/HZ-TPAOH催化剂的芳烃选择性大幅提升，同时催化剂寿命明显增加，具有连通介孔结构的Zn/HZ-NaOH寿命又明显长于具有多空腔结构的Zn/HZ-TPAOH。

Nano-plate twin crystal HZSM-5 is crystallized by hydrothermal method,and the pore structure of ZSM-5 is modified by NaOH or TPAOH.The results show that microporous ZSM-5 gains the perforated mesoporous structure by NaOH treatment and the multi-cavity structure is obtained by TPAOH treatment.The cavity connects to the outside through the micropore.ZSM-5 with different pore structure is modified by Zn and then used in methanol to aromatic reaction.The structures of different samples are analyzed by XRD,SEM,TEM and Argon physical adsorption.NH₃-TPD is used to determine the acidic properties of different samples.Zn states in different samples are analyzed by XPS.The results show that Zn/HZ-TPAOH catalyst with multi-cavity structure can significantly improve the selectivity of aromatics,and the catalyst lifetime lengthens significantly.The lifetime of Zn/HZ-NaOH with connected mesoporous structure is significantly longer than that of Zn/HZ-TPAOH with multi-cavity structure.

李政杭(1993-),男,硕士研究生,研究方向为ZSM-5的合成及其甲醇芳构化的研究,DUT＿lzh@163.com