The role of copper speciation in the low temperature oxidative upgrading of short chain alkanes over Cu/ZSM-5 catalysts

Armstrong, Robert, Peneau, Virginie, Ritterskamp, Nadine, Kiely, Christopher J. ORCID: https://orcid.org/0000-0001-5412-0970, Taylor, Stuart H. ORCID: https://orcid.org/0000-0002-1933-4874 and Hutchings, Graham John ORCID: https://orcid.org/0000-0001-8885-1560 2018. The role of copper speciation in the low temperature oxidative upgrading of short chain alkanes over Cu/ZSM-5 catalysts. ChemPhysChem 19 (4) , pp. 469-478. 10.1002/cphc.201701046

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Abstract

Partial oxidative upgrading of C1–C3 alkanes over Cu/ZSM‐5 catalysts prepared by chemical vapour impregnation (CVI) has been studied. The undoped ZSM‐5 support is itself able to catalyse selective oxidations, for example, methane to methanol, using mild reaction conditions and the green oxidant H2O2. Addition of Cu suppresses secondary oxidation reactions, affording methanol selectivities of up to 97 %. Characterisation studies attribute this ability to population of specific Cu sites below the level of total exchange (Cu/Al<0.5). These species also show activity for radical‐based methane oxidation, with productivities exceeding those of the parent zeolite supports. When tested for ethane and propane oxidation reactions, comparable trends are observed

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Cardiff Catalysis Institute (CCI) Chemistry
Publisher:	Wiley-Blackwell
ISSN:	1439-4235
Funders:	Cardiff University
Date of First Compliant Deposit:	7 December 2017
Date of Acceptance:	27 November 2017
Last Modified:	25 Jul 2024 05:26
URI:	https://orca.cardiff.ac.uk/id/eprint/107404

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