Sustainable methane utilization technology via photocatalytic halogenation with alkali halides

Jun Ma, Can Zhu, Keke Mao, Wenbin Jiang, Jingxiang Low, Delong Duan, Huanxin Ju, Dong Liu, Kun Wang, Yijing Zang, Shuangming Chen, Hui Zhang, Zeming Qi, Ran Long (), Zhi Liu, Li Song and Yujie Xiong ()
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Jun Ma: University of Science and Technology of China
Can Zhu: Fudan University
Keke Mao: Anhui University of Technology
Wenbin Jiang: University of Science and Technology of China
Jingxiang Low: University of Science and Technology of China
Delong Duan: University of Science and Technology of China
Huanxin Ju: PHI China Analytical Laboratory, CoreTech Integrated Limited
Dong Liu: University of Science and Technology of China
Kun Wang: Fudan University
Yijing Zang: ShanghaiTech University
Shuangming Chen: University of Science and Technology of China
Hui Zhang: Chinese Academy of Sciences
Zeming Qi: University of Science and Technology of China
Ran Long: University of Science and Technology of China
Zhi Liu: ShanghaiTech University
Li Song: University of Science and Technology of China
Yujie Xiong: University of Science and Technology of China

Nature Communications, 2023, vol. 14, issue 1, 1-8

Abstract: Abstract Methyl halides are versatile platform molecules, which have been widely adopted as precursors for producing value-added chemicals and fuels. Despite their high importance, the green and economical synthesis of the methyl halides remains challenging. Here we demonstrate sustainable and efficient photocatalytic methane halogenation for methyl halide production over copper-doped titania using alkali halides as a widely available and noncorrosive halogenation agent. This approach affords a methyl halide production rate of up to 0.61 mmol h−1 m−2 for chloromethane or 1.08 mmol h−1 m−2 for bromomethane with a stability of 28 h, which are further proven transformable to methanol and pharmaceutical intermediates. Furthermore, we demonstrate that such a reaction can also operate solely using seawater and methane as resources, showing its high practicability as general technology for offshore methane exploitation. This work opens an avenue for the sustainable utilization of methane from various resources and toward designated applications.

Date: 2023
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DOI: 10.1038/s41467-023-36977-0

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