Continuous methane partial oxidation over Au/ZSM-5 catalysts

Berko, Mark B.F., Kazi Aurnob, A.K.M., Lewis, Richard J., Davies, Thomas E., Qi, Guodong, Xu, Jun, Taylor, Stuart H. ORCID: https://orcid.org/0000-0002-1933-4874, Hutchings, Graham J. ORCID: https://orcid.org/0000-0001-8885-1560, Spivey, James J. and Ding, Kunlun 2026. Continuous methane partial oxidation over Au/ZSM-5 catalysts. Catalysis Today 461 , p. 115531. 10.1016/j.cattod.2025.115531

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Abstract

The selective oxidation of methane to methanol and acetic acid represents a promising strategy for valorizing abundant natural gas into valuable chemicals. Using zeolite (ZSM-5)-supported Au nanoparticles from colloidal adsorption, deposition precipitation and wet impregnation methods, we demonstrate the selective oxidation of methane by cofeeding CH4, CO, O2 and steam in a high-pressure continuous flow reactor. Oxygenates (methanol, acetic acid and other trace chemicals.) and higher hydrocarbons (ethane) were produced in addition to carbon dioxide. The catalyst synthesis protocols showed a strong influence on the catalytic performance. Infrared spectroscopy and electron microscopy studies suggest that Au nanoparticles rather than ionic Au species are responsible for the active sites in the selective oxidation of methane.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Schools > Chemistry
Additional Information:	License information from Publisher: LICENSE 1: Title: This article is under embargo with an end date yet to be finalised.
Publisher:	Elsevier
ISSN:	0920-5861
Date of Acceptance:	25 August 2025
Last Modified:	04 Sep 2025 09:00
URI:	https://orca.cardiff.ac.uk/id/eprint/180880

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