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Fang X, Liu H, Chen Z, Liu Z, Ding X, Ni Y, Zhu W, Liu Z. Highly Enhanced Aromatics Selectivity by Coupling of Chloromethane and Carbon Monoxide over H-ZSM-5. Angew Chem Int Ed Engl 2022; 61:e202114953. [PMID: 35104006 DOI: 10.1002/anie.202114953] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Indexed: 11/09/2022]
Abstract
The transformation of methane into high value-added chemicals such as aromatics provides a more desired approach towards sustainable chemistry but remains a critical challenge due to the low selectivity of aromatics and poor stability. Herein, we first report a coupling reaction of CH3 Cl and CO (CCTA) based on methane conversion, which achieves extremely high aromatics selectivity (82.2 %) with the selectivity of BTX up to ca. 60 % over HZSM-5. The promoting effects have been demonstrated on other zeolites especially 10-membered rings (10 MR) zeolites. Multiple characterizations show that 2,3-dimethyl-2-cyclopentene-1-one (DMCPO) is generated from acetyl groups and olefins. Furthermore, isotopic labeling analysis confirms that CO is inserted into the DMCPO and aromatics rings. A new aromatization mechanism is proposed, including the formation of the above intermediates, which conspicuously weakens the hydrogen transfer reaction, leading to a considerable increase of aromatics selectivity and a dramatic drop in alkanes.
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Affiliation(s)
- Xudong Fang
- National Engineering Laboratory for Methanol to Olefins, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Hongchao Liu
- National Engineering Laboratory for Methanol to Olefins, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China
| | - Zhiyang Chen
- National Engineering Laboratory for Methanol to Olefins, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhaopeng Liu
- National Engineering Laboratory for Methanol to Olefins, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiangnong Ding
- National Engineering Laboratory for Methanol to Olefins, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Youming Ni
- National Engineering Laboratory for Methanol to Olefins, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China
| | - Wenliang Zhu
- National Engineering Laboratory for Methanol to Olefins, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China
| | - Zhongmin Liu
- National Engineering Laboratory for Methanol to Olefins, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China
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Fang X, Liu H, Chen Z, Liu Z, Ding X, Ni Y, Zhu W, Liu Z. Highly Enhanced Aromatics Selectivity by Coupling of Chloromethane and Carbon Monoxide over H‐ZSM‐5. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202114953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Xudong Fang
- National Engineering Laboratory for Methanol to Olefins Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Hongchao Liu
- National Engineering Laboratory for Methanol to Olefins Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 P. R. China
| | - Zhiyang Chen
- National Engineering Laboratory for Methanol to Olefins Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Zhaopeng Liu
- National Engineering Laboratory for Methanol to Olefins Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Xiangnong Ding
- National Engineering Laboratory for Methanol to Olefins Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Youming Ni
- National Engineering Laboratory for Methanol to Olefins Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 P. R. China
| | - Wenliang Zhu
- National Engineering Laboratory for Methanol to Olefins Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 P. R. China
| | - Zhongmin Liu
- National Engineering Laboratory for Methanol to Olefins Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 P. R. China
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