Methane partial oxidation over Rh/ZSM-5 catalysts in a high-pressure continuous flow reactor

Kazi Aurnob, A.K.M., Berko, Mark B.F., Yu, Jialin, Chadwick, David, Li, Kang, Lewis, Richard J., Davies, Thomas, 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. Methane partial oxidation over Rh/ZSM-5 catalysts in a high-pressure continuous flow reactor. Catalysis Today 462 , 115558. 10.1016/j.cattod.2025.115558 Item availability restricted.

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Abstract

Zeolite-supported Rh catalysts have been shown to be highly effective in catalyzing the oxidative carbonylation of methane to produce acetic acid. However, most of the research reported so far employed high-pressure batch reactors with long residence times. Continuous flow reactors have been seldomly used, with the majority of earlier works focused on ambient pressure studies. In this contribution, we constructed a high-pressure continuous flow reactor with steam cofeeding to bridge the knowledge gap that exists between these two distinct approaches. The production of CH3OH, CH3COOH, and other oxygenates, using a reactant mixture of CH4, CO, O2, and steam, was observed over Rh/ZSM-5 catalysts. The primary oxygenates, CH3OH and CH3COOH, reached productivities of 45 and 102 µmol/(gcat.•h), respectively. The influence of space velocity, Rh loading, Si/Al ratio of the zeolite support, and CO partial pressure were investigated.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Schools > Chemistry Research Institutes & Centres > Cardiff Catalysis Institute (CCI)
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 First Compliant Deposit:	3 October 2025
Date of Acceptance:	4 September 2025
Last Modified:	03 Oct 2025 08:45
URI:	https://orca.cardiff.ac.uk/id/eprint/181028

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