Light alkane aromatization for aromatic compound production, used in petrochemical industries is an attractive area of research. The effect of second metal co-impregnation was investigated in stabilizing zinc on ZSM-5 in aromatization of propane. HZSM-5 was modified with zinc and iron metal by co wet-impregnation and characterized using XRF, XRD, BET, N₂-adsorption, FTIR, FTIR-Pyridine, SEM, TEM, H₂-TPR and XPS. The effect of different loadings of Iron on Zn/ZSM-5 was investigated on acidity, aromatic yield, product distribution and aromatization performance. Performance test was conducted in a fixed bed reactor at 540 °C, one atmosphere. GHSV of 1200 mL/g-h. Co-impregnation of Zn with Fe improved the catalytic activity and aromatic yield for 10 h time on stream as compared to parent HZSM-5 and Zn/ZSM-5 of very low aromatic yield and propane conversion. Impregnation of Zn as the dehydrogenating metal on HZSM-5 steadily increased aromatic yield from 5% on HZSM-5 to 25% and was steadily dropped to 20% after 10 h TOS. The co-impregnation of iron of 1–3 wt% loading as the second metal for zinc stability with 2 wt% Zn on ZSM-5 improved propane conversion and aromatic yield to 55% for the 10 h TOS. This further enhanced aromatic product distribution and minimized light gases.

用于石化工业的轻质烷烃芳构化生产芳香族化合物是一个有吸引力的研究领域。研究了丙烷芳构化过程中第二金属共浸渍对 ZSM-5 上锌的稳定作用。采用锌铁金属共湿浸渍法对HZSM-5进行改性，并采用XRF、XRD、BET、N _{2 -}吸附、FTIR、FTIR-吡啶、SEM、TEM、H ₂ -TPR和XPS进行表征。研究了Zn/ZSM-5上不同铁负载量对酸度、芳烃收率、产物分布和芳构化性能的影响。性能测试在固定床反应器中、540℃、大气压下进行。 GHSV 为 1200 毫升/小时。与芳烃产率和丙烷转化率非常低的母体 HZSM-5 和 Zn/ZSM-5 相比，Zn 与 Fe 的共浸渍提高了催化活性和运行 10 小时的芳烃产率。 Zn 作为脱氢金属在 HZSM-5 上的浸渍使芳烃产率从 HZSM-5 上的 5% 稳步提高到 25%，并在 10 小时 TOS 后稳步下降到 20%。将 1-3 wt% 负载量的铁作为第二种金属与 2 wt% Zn 在 ZSM-5 上进行共浸渍，可提高锌稳定性，在 10 小时 TOS 中，丙烷转化率和芳烃收率提高至 55%。这进一步增强了芳香族产品的分布并最大限度地减少了轻质气体。