Efficient Conversion of Methane to Aromatics by Coupling Methylation Reaction
Efficient Conversion of Methane to Aromatics by Coupling Methylation Reaction
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通过耦合甲基化反应将甲烷高效转化为芳烃
DOI：
10.1021/acscatal.6b01362
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发表时间：
2016-08-01
期刊：
影响因子：
12.9
通讯作者：
Zhang, Yi
中科院分区：
文献类型：
--
作者：
Liu, Yi;Li, Defu;Zhang, Yi
采用Mo/HZSM-5催化剂进行甲烷脱氢芳构化（MDA）和甲醇甲基化偶联反应，在常压和973 K下，甲烷直接转化为苯、甲苯和二甲苯（BTX），反应时间长（60 h），活性高（26.4%），选择性高（>90%）。通过表征，证实了甲醇能有效地甲基化生成的苯，使其具有较高的活性和稳定性，证明了苯缩聚反应生成的焦炭是导致MDA快速失活的原因。
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.