The preparation of aromatic by methanol was the most effective way for rational utilization of resources. However, the catalyst for MTA reaction has not yet been successfully studied. Therefore, highly active and shape‐selective HZSM‐5 zeolite‐based catalysts were designed and synthesized by post‐treatments of desilication, dealumination, surface‐passivation and hydrothermal treatment tuning pore structure and acid amount and acid concentration of catalysts. XRD, SEM, TEM, BET, NH₃‐TPD and Py‐IR were used for research and analysis the structure‐activity relationship between the catalysts and MTA reaction. The results showed that the total acid amount of catalyst shown a significant role in increasing the BTX selectivity. The selectivity of aromatics increased from 33 % to 58.1 % after hydrothermal treatment compared to the parent HZSM‐5 zeolite due to the decreased of total acid amount. Nevertheless the weak acid sites were crucial in increasing the p‐xylene selectivity. The selectivity of p‐xylene reached 63.8 % and 70.1 % after hydrothermal treatment and surface‐passivation due to the increased of weak acid sites, respectively. Modified HZSM‐5 zeolite‐base catalysts showed good application prospects in producing aromatics from methanol.

中文翻译：

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HZSM-5的后处理对甲醇催化芳烃催化性能的影响

用甲醇制备芳烃是合理利用资源的最有效方法。但是，尚未成功研究用于MTA反应的催化剂。因此，通过脱硅，脱铝，表面钝化和水热处理的后处理，通过调节催化剂的孔结构，酸量和酸浓度，设计并合成了高活性和形状选择性的HZSM-5沸石基催化剂。XRD，SEM，TEM，BET，NH ₃TPD和PyIR用于研究和分析催化剂与MTA反应之间的构效关系。结果表明，催化剂的总酸量在提高BTX选择性方面显示出重要作用。与母体HZSM-5沸石相比，水热处理后芳烃的选择性从33％增加到58.1％，这是由于总酸量的减少所致。然而，弱酸位对于提高对二甲苯的选择性至关重要。经过水热处理和表面钝化后，由于弱酸位的增加，对二甲苯的选择性分别达到了63.8％和70.1％。改性的HZSM-5沸石基催化剂在由甲醇生产芳烃方面显示出良好的应用前景。