Efficient Conversion of Methane to Aromatics by Coupling Methylation Reaction

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• 作者：Yi Liu ; Defu Li ; Tianyun Wang ; Yang Liu ; Teng Xu ; Yi Zhang
• 刊名：ACS Catalysis
• 出版年：2016
• 出版时间：August 5, 2016
• 年：2016
• 卷：6
• 期：8
• 页码：5366-5370
• 全文大小：420K
• 年卷期：0
• ISSN：2155-5435

文摘

We report that the coupling of methane dehydroaromatization (MDA) and methanol methylation over a Mo/HZSM-5 catalyst can realize the direct conversion of methane to benzene, toluene, and xylene (BTX) with long-time steady state (60 h), higher activity (26.4%), and selectivity of BTX (>90%) at atmospheric pressure and 973 K. Based on characterization, it was confirmed that the formed benzene can be effectively methylated by methanol, leading to high activity and stability, which proves that the coke from polycondensation of the formed benzene results in rapid deactivation of MDA.