期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 57, 期 38, 页码 12549-12553出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201807814
关键词
aromatics; carbon monoxide; heterogeneous catalysis; H-ZSM-5; methanol
资金
- National Natural Science Foundation of China [21606224]
The conversion of methanol into aromatics over unmodified H-ZSM-5 zeolite is generally not high because the hydrogen transfer reaction results in alkane formation. Now circa 80% aromatics selectivity for the coupling reaction of methanol and carbon monoxide over H-ZSM-5 is reported. Carbonyl compounds and methyl-2-cyclopenten-1-ones (MCPOs), which were detected in the products and catalysts, respectively, are considered as intermediates. The latter species can be synthesized from the former species and olefins. C-13 isotope tracing and C-13 liquid-state NMR results confirmed that the carbon atoms of CO molecules were incorporated into MCPOs and aromatic rings. A new aromatization mechanism that involves the formation of the above intermediates and co-occurs with a dramatically decreased hydrogen transfer reaction is proposed. A portion of the carbons in CO molecules are incorporated into aromatic, which is of great significance for industrial applications.
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