Confined Cu-OH single sites in SSZ-13 zeolite for the direct oxidation of methane to methanol

Hailong Zhang, Peijie Han, Danfeng Wu, Congcong Du, Jiafei Zhao, Kelvin H. L. Zhang, Jingdong Lin, Shaolong Wan, Jianyu Huang, Shuai Wang (), Haifeng Xiong () and Yong Wang ()
Additional contact information
Hailong Zhang: Xiamen University
Peijie Han: Xiamen University
Danfeng Wu: Xiamen University
Congcong Du: Xiamen University
Jiafei Zhao: Xiamen University
Kelvin H. L. Zhang: Xiamen University
Jingdong Lin: Xiamen University
Shaolong Wan: Xiamen University
Jianyu Huang: Yanshan University
Shuai Wang: Xiamen University
Haifeng Xiong: Xiamen University
Yong Wang: Washington State University

Nature Communications, 2023, vol. 14, issue 1, 1-10

Abstract: Abstract The direct oxidation of methane to methanol (MTM) remains a significant challenge in heterogeneous catalysis due to the high dissociation energy of the C-H bond in methane and the high desorption energy of methanol. In this work, we demonstrate a breakthrough in selective MTM by achieving a high methanol space-time yield of 2678 mmol molCu−1 h−1 with 93% selectivity in a continuous methane-steam reaction at 400 °C. The superior performance is attributed to the confinement effect of 6-membered ring (6MR) voids in SSZ-13 zeolite, which host isolated Cu-OH single sites. Our results provide a deeper understanding of the role of Cu-zeolites in continuous methane-steam to methanol conversion and pave the way for further improvement.

Date: 2023
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DOI: 10.1038/s41467-023-43508-4

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