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The selective oxidation of cyclohexane via In-situ H2O2 production over supported Pd-based catalysts

Crombie, Caitlin M., Lewis, Richard J., Kovačič, Dávid, Morgan, David J. ORCID:, Slater, Thomas J. A. ORCID:, Davies, Thomas E., Edwards, Jennifer. K. ORCID:, Skjøth-Rasmussen, Martin Skov and Hutchings, Graham J. ORCID: 2021. The selective oxidation of cyclohexane via In-situ H2O2 production over supported Pd-based catalysts. Catalysis Letters 151 , pp. 2762-2774. 10.1007/s10562-020-03511-6

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The oxidation of cyclohexane via the in-situ production of H2O2 from molecular H2 and O2 offers an attractive route to the current industrial means of producing cyclohexanone and cyclohexanol (KA oil), key materials in the production of Nylon. The in-situ route has the potential to overcome the significant economic and environmental concerns associated with the use of commercial H2O2, while also allowing for the use of far lower reaction temperatures than those typical of the purely aerobic route to KA oil. Herein we demonstrate the efficacy of a series of bi-functional Pd-based catalysts, which offer appreciable concentrations of KA oil, under conditions where limited activity is observed using O2 alone. In particular the introduction of V into a supported Pd catalyst is seen to improve KA oil concentration by an order of magnitude, compared to the Pd-only analogue. In particular we ascribe this improvement in catalytic performance to the development of Pd domains of mixed oxidation state upon V incorporation as evidenced through X-ray photoelectron spectroscopy.

Item Type: Article
Date Type: Published Online
Status: Published
Schools: Chemistry
Cardiff Catalysis Institute (CCI)
Additional Information: This article is licensed under a Creative Commons Attribution 4.0 International License
Publisher: Springer
ISSN: 1011-372X
Funders: Haldor Topsøe
Date of First Compliant Deposit: 19 January 2021
Date of Acceptance: 21 December 2020
Last Modified: 06 Jan 2024 03:37

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