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Controlling the production of acid catalyzed products of furfural hydrogenation by Pd/TiO2

Tierney, George F., Alijani, Shahram, Panchal, Monik, Decarolis, Donato, Gutierrez, Martha Briceno, Mohammed, Khaled M. H., Callison, June, Gibson, Emma K., Thompson, Paul B. J., Collier, Paul, Dimitratos, Nikolaos, Corbos, E. Crina, Pelletier, Frederic, Villa, Alberto and Wells, Peter P. 2021. Controlling the production of acid catalyzed products of furfural hydrogenation by Pd/TiO2. ChemCatChem 13 (24) , pp. 5121-5133. 10.1002/cctc.202101036

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Abstract

We demonstrate a modified sol-immobilization procedure using (MeOH)x/(H2O)1-x solvent mixtures to prepare Pd/TiO2 catalysts that are able to reduce the formation of acid catalyzed products, e. g. ethers, for the hydrogenation of furfural. Transmission electron microscopy found a significant increase in polyvinyl alcohol (PVA) deposition at the metal-support interface and temperature programmed reduction found a reduced uptake of hydrogen, compared to an established Pd/TiO2 preparation. We propose that the additional PVA hinders hydrogen spillover onto the TiO2 support and limits the formation of Brønsted acid sites, required to produce ethers. Elsewhere, the new preparation route was able to successfully anchor colloidal Pd to the TiO2 surface, without the need for acidification. This work demonstrates the potential for minimizing process steps as well as optimizing catalyst selectivity – both important objectives for sustainable chemistry.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Cardiff Catalysis Institute (CCI)
Additional Information: This is an open access article under the terms of the Creative Commons Attribution License
Publisher: Wiley-VCH Verlag
ISSN: 1867-3880
Funders: UK Catalysis Hub Consortium and funded by EPSRC grant: EP/K014706/2, EP/ K014668/1, EP/K014854/1, EP/K014714/1 or EP/M013219/1
Date of First Compliant Deposit: 14 December 2021
Date of Acceptance: 10 October 2021
Last Modified: 16 Dec 2021 12:30
URI: https://orca.cardiff.ac.uk/id/eprint/146127

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