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Au-ZSM-5 catalyses the selective oxidation of CH4 to CH3OH and CH3COOH using O2

Qi, Guodong, Davies, Thomas E., Nasrallah, Ali, Sainna, Mala A., Howe, Alexander G. R., Lewis, Richard J., Quesne, Matthew, Catlow, C. Richard A., Willock, David J., He, Qian, Bethell, Donald, Howard, Mark J., Murrer, Barry A., Harrison, Brian, Kiely, Christopher J., Zhao, Xingling, Deng, Feng, Xu, Jun and Hutchings, Graham J. 2022. Au-ZSM-5 catalyses the selective oxidation of CH4 to CH3OH and CH3COOH using O2. Nature Catalysis 5 , 45–54. 10.1038/s41929-021-00725-8

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Abstract

The oxidation of methane, the main component of natural gas, to selectively form oxygenated chemical feedstocks using molecular oxygen has been a long-standing grand challenge in catalysis. Here, using gold nanoparticles supported on the zeolite ZSM-5, we introduce a method to oxidize methane to methanol and acetic acid in water at temperatures between 120 and 240 °C using molecular oxygen in the absence of any added coreductant. Electron microscopy reveals that the catalyst does not contain gold atoms or clusters, but rather gold nanoparticles are the active component, while a mechanism involving surface adsorbed species is proposed in which methanol and acetic acid are formed via parallel pathways.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Cardiff Catalysis Institute (CCI)
Publisher: Nature Research
ISSN: 2520-1158
Funders: EPSRC
Date of First Compliant Deposit: 24 January 2022
Date of Acceptance: 12 November 2021
Last Modified: 31 Jul 2022 16:37
URI: https://orca.cardiff.ac.uk/id/eprint/146856

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