Methanol to Aromatics on Hybrid Structure Zeolite Catalysts

Catalysts Pub Date : 2024-07-18 DOI:10.3390/catal14070461
M. Magomedova, E. Galanova, Anastasia V. Starozhitskaya, M. Afokin, David V. Matevosyan, S. V. Egazaryants, Dmitry E. Tsaplin, A. L. Maximov
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Abstract

A study on the reaction of methanol to aromatic hydrocarbons using catalysts based on hybrid zeolites MFI-MEL, MFI-MTW, and MFI-MCM-41 at a temperature of 340 °C and a pressure of 10.0 MPa was carried out. It is shown that in the synthesis of hydrocarbons under pressure, the activity of the studied samples is similar and does not have a linear correlation with their total acidity. It was found that the catalyst’s activity is primarily determined by the rate of the initial methanol conversion reaction, which is related to the volume of micropores—more micropores lead to higher activity. Additionally, increasing the volume of mesopores results in the formation of heavier aromatic compounds, specifically C10–C11.
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在混合结构沸石催化剂上将甲醇转化为芳烃
研究使用基于混合沸石 MFI-MEL、MFI-MTW 和 MFI-MCM-41 的催化剂,在温度为 340 ℃、压力为 10.0 MPa 的条件下,将甲醇反应为芳香烃。结果表明,在加压合成碳氢化合物的过程中,所研究样品的活性是相似的,并且与它们的总酸度没有线性关系。研究发现,催化剂的活性主要取决于初始甲醇转化反应的速率,而这与微孔的体积有关--微孔越多,活性越高。此外,增加中孔容积会形成较重的芳香族化合物,特别是 C10-C11。
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