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

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.

SUBMITTER: Zhang H

PROVIDER: S-EPMC10673993 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature

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

Zhang Hailong H Han Peijie P Wu Danfeng D Du Congcong C Zhao Jiafei J Zhang Kelvin H L KHL Lin Jingdong J Wan Shaolong S Huang Jianyu J Wang Shuai S Xiong Haifeng H Wang Yong Y

Nature communications 20231124 1

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 ri ...[more]

PMID: 38001068

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