Xiao, Lifeng, Agrawal, Kushagra, Cai, Rongsheng, Qu, Ruiyang, Mediavilla Madrigal, Sofia, Conway, Matthew, Morgan, David J.  ORCID: https://orcid.org/0000-0002-6571-5731, Taylor, Stuart H. ORCID: https://orcid.org/0000-0002-1933-4874, Beale, Andrew M., Haigh, Sarah J., Logsdail, Andrew J. ORCID: https://orcid.org/0000-0002-2277-415X and Meenakshisundaram, Sankar ORCID: https://orcid.org/0000-0002-7105-0203
2026.
Controlling chemoselectivity of heterogeneous Pt catalysts via a support induced effect.
Catalysis Science & Technology
10.1039/D6CY00493H
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Abstract
Tuning the chemoselectivity of a supported metal heterogeneous catalyst during hydrogenation reactions is extremely important and challenging, often achieved by changing the metal or adding homogeneous additives to the reaction. Tuning of the chemoselectivity for a given reaction over a supported metal catalyst, with a better understanding of the nature of the active site, is highly valuable to both academia and industry. Here, we report a support induced chemoselectivity (SIC) switch between Pt/TiO2 and Pt/Nb2O5 during the hydrogenation of 3-nitrostyrene with high chemoselectivity. Specifically, 0.2%Pt/TiO2 selectively reduces the –NO2 group to form 3-vinyl aniline, whereas 0.2%Pt/Nb2O5 selectively reduces the C═C bond to form 3-ethylnitrobenzene. Advanced characterisation and ab initio calculations indicate that the observed differences in selectivity could be because of support-dependent interactions at Pt–support interfacial sites, which modify the local electronic environment and adsorption behaviour of the substrate. These results suggest that the support–metal interfacial sites could potentially play a key role in controlling and switching chemoselectivity during 3-nitrostyrene hydrogenation. These results demonstrate that, in addition to modifying the metallic sites, the chemoselectivity of supported Pt nanoparticles can also be tuned by changing the support, offering an additional approach for designing new chemoselective supported metal catalysts for 3-nitrostyrene hydrogenation.
| Item Type: | Article |
|---|---|
| Date Type: | Published Online |
| Status: | In Press |
| Schools: | Research Institutes & Centres > Cardiff Catalysis Institute (CCI) Schools > Chemistry Schools > Physical, Chemical & Environmental Sciences |
| Publisher: | Royal Society of Chemistry |
| ISSN: | 2044-4753 |
| Funders: | UK Research and Innovation, Engineering and Physical Sciences Research Council |
| Projects: | MR/T018372/1, MR/Y034279/1, Prosperity Partnership EP/V056565/1 |
| Date of First Compliant Deposit: | 26 October 2026 |
| Date of Acceptance: | 28 September 2026 |
| Last Modified: | 26 Oct 2026 12:50 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/190411 |
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