Zhang, Y, Ettelaie, R orcid.org/0000-0002-6970-4650, Binks, BP et al. (1 more author) (2021) Highly Selective Catalysis at the Liquid–Liquid Interface Microregion. ACS Catalysis, 11. pp. 1485-1494. ISSN 2155-5435
Abstract
Liquid–liquid interfaces in principle have the potential to regulate the selectivity of chemical reactions because of highly anisotropic microenvironments but have not yet been well exploited. Here, we present a liquid–liquid interface-based strategy to boost catalytic selectivity, exemplified by selective hydrogenation of α,β-unsaturated aldehydes. The key to this success is the spatially controlled assembly of tubular catalyst particles, just at the narrow inner interfacial layer of Pickering emulsion water droplets. The catalyst particles that are assembled at the inner interfacial layer of water droplets exhibit much higher selectivity to C═O hydrogenation than ones located either at the outer interfacial layer, in the interior of droplets, or at the conventionally called Pickering emulsion interface. A selectivity of 92.0–98.0% to the thermodynamically and kinetically unfavorable C═O hydrogenation over the C═C hydrogenation was achieved unexpectedly. Our strategy and the phenomena of interfacial catalysis reported here constitute an important supplement to the existing methods for tuning catalytic selectivity, providing tremendous opportunities to construct highly selective catalytic systems.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2021 American Chemical Society. This is an author produced version of an article published in ACS Catalysis. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | biphasic catalysis; Pickering emulsions; liquid−liquid interface; heterogeneous catalysis |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Food Science and Nutrition (Leeds) > FSN Colloids and Food Processing (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 18 Jan 2021 16:08 |
Last Modified: | 14 Jan 2022 01:38 |
Status: | Published |
Publisher: | American Chemical Society (ACS) |
Identification Number: | 10.1021/acscatal.0c04604 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:170100 |