Volume 61, Issue 31 e202203859
Research Article

Highly Selective Carbonylation of CH3Cl to Acetic Acid Catalyzed by Pyridine-Treated MOR Zeolite

Xudong Fang

Xudong Fang

National Engineering Research Center of Lower-Carbon Catalysis Technology, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023 P. R. China

University of Chinese Academy of Sciences, Beijing, 100049 China

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Dr. Fuli Wen

Dr. Fuli Wen

National Engineering Research Center of Lower-Carbon Catalysis Technology, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023 P. R. China

University of Chinese Academy of Sciences, Beijing, 100049 China

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Xiangnong Ding

Xiangnong Ding

National Engineering Research Center of Lower-Carbon Catalysis Technology, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023 P. R. China

University of Chinese Academy of Sciences, Beijing, 100049 China

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Hanbang Liu

Hanbang Liu

National Engineering Research Center of Lower-Carbon Catalysis Technology, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023 P. R. China

University of Chinese Academy of Sciences, Beijing, 100049 China

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Dr. Zhiyang Chen

Dr. Zhiyang Chen

National Engineering Research Center of Lower-Carbon Catalysis Technology, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023 P. R. China

University of Chinese Academy of Sciences, Beijing, 100049 China

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Zhaopeng Liu

Zhaopeng Liu

National Engineering Research Center of Lower-Carbon Catalysis Technology, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023 P. R. China

University of Chinese Academy of Sciences, Beijing, 100049 China

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Dr. Hongchao Liu

Corresponding Author

Dr. Hongchao Liu

National Engineering Research Center of Lower-Carbon Catalysis Technology, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023 P. R. China

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Prof. Wenliang Zhu

Corresponding Author

Prof. Wenliang Zhu

National Engineering Research Center of Lower-Carbon Catalysis Technology, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023 P. R. China

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Prof. Zhongmin Liu

Prof. Zhongmin Liu

National Engineering Research Center of Lower-Carbon Catalysis Technology, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023 P. R. China

University of Chinese Academy of Sciences, Beijing, 100049 China

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First published: 30 May 2022
Citations: 6

Graphical Abstract

An innovative reaction strategy for the transformation of methane into acetic acid via CH3Cl carbonylation over H-zeolites is reported. A 99.3 % acetic acid (AA) and methyl acetate (MA) selectivity was obtained over pyridine-pretreated MOR at 523 K and 2.0 MPa. This strategy enables efficient conversion of methane into oxygenates under mild conditions.

Abstract

The selective conversion of methane to high value-added chemicals under mild conditions is of great significance for the commercially viable and sustainable utilization of methane but remains a formidable challenge. Herein, we report a strategy for efficiently converting methane to acetic acid via CH3Cl as an intermediate. Up to 99.3 % acetic acid and methyl acetate (AA+MA) selectivity was achieved over pyridine-pretreated MOR (MOR-8) under moderate conditions of 523 K and 2.0 MPa. Water, conventionally detrimental to carbonylation reaction over zeolite catalysts, was conducive to the production of AA in the current reaction system. In the 100 h continuous test with the MOR-8 catalyst, the average AA+MA selectivity remained over 98 %. AA was formed by carbonylation of methoxy groups within 8-membered rings of MOR followed by hydrolysis. This strategy provided an approach for highly efficient utilization of methane to oxygenates under mild reaction conditions.

Conflict of interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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