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The degradation of phenol via in situ H2O2 production over supported Pd-based catalysts

Santos, Alba, Lewis, Richard J., Morgan, David J., Davies, Thomas E., Hampton, Euan, Gaskin, Paul and Hutchings, Graham J. 2021. The degradation of phenol via in situ H2O2 production over supported Pd-based catalysts. Catalysis Science & Technology 11 (24) , pp. 7866-7874. 10.1039/D1CY01897C

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Abstract

The oxidative degradation of phenol via the in situ production of H2O2 from molecular H2 and O2 offers an attractive route to the destruction of organic contaminants in water streams, potentially overcoming the significant economic and environmental concerns associated with traditional water remediation technologies. Herein we demonstrate the efficacy of a series of bifunctional Pd-based catalysts, which offer appreciable rates of phenol degradation. In particular, the introduction of Fe into a supported Pd catalyst leads to a near four-fold increase in pollutant remediation. We ascribe this improvement in catalytic performance to the ability of Fe to catalyse the formation of oxygen-based radical species from in situ synthesised H2O2 via Fenton's pathways and the promotion of Pd domains of mixed oxidation state, with a resulting inhibition of H2O2 degradation pathways.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Cardiff Catalysis Institute (CCI)
Additional Information: This article is licensed under a Creative Commons Attribution 3.0 Unported Licence
Publisher: Royal Society of Chemistry
ISSN: 2044-4753
Funders: Cardiff University and the Max Planck centre for Fundamental Heterogeneous Catalysis (FUNCAT)
Date of First Compliant Deposit: 16 November 2021
Date of Acceptance: 8 November 2021
Last Modified: 11 Jan 2022 14:49
URI: http://orca.cardiff.ac.uk/id/eprint/145548

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