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https://doi.org/10.1038/s41929-019-0334-3
Title: | Tuning of catalytic sites in Pt/TiO2 catalysts for the chemoselective hydrogenation of 3-nitrostyrene | Authors: | Macino, Margherita Barnes, Alexandra J Qu, Ruiyang Gibson, Emma K Morgan, David J Freakley, Simon J Dimitratos, Nikolaos Kiely, Christopher J Gao, Xiang Beale, Andrew M Bethell, Donald HE QIAN Sankar, Meenakshisundaram Hutchings, Graham J Althahban, Sultan M |
Keywords: | Science & Technology Physical Sciences Chemistry, Physical Chemistry AROMATIC NITRO-COMPOUNDS STABLE SINGLE-ATOM SELECTIVE REDUCTION CROTONALDEHYDE HYDROGENATION FUNCTIONALIZED NITROARENES EFFICIENT REDUCTION CO SUPPORT SPECTROSCOPY AMINES |
Issue Date: | 1-Oct-2019 | Publisher: | NATURE PUBLISHING GROUP | Citation: | Macino, Margherita, Barnes, Alexandra J, Qu, Ruiyang, Gibson, Emma K, Morgan, David J, Freakley, Simon J, Dimitratos, Nikolaos, Kiely, Christopher J, Gao, Xiang, Beale, Andrew M, Bethell, Donald, HE QIAN, Sankar, Meenakshisundaram, Hutchings, Graham J, Althahban, Sultan M (2019-10-01). Tuning of catalytic sites in Pt/TiO2 catalysts for the chemoselective hydrogenation of 3-nitrostyrene. NATURE CATALYSIS 2 (10) : 873-881. ScholarBank@NUS Repository. https://doi.org/10.1038/s41929-019-0334-3 | Abstract: | © 2019, The Author(s), under exclusive licence to Springer Nature Limited. The catalytic activities of supported metal nanoparticles can be tuned by appropriate design of synthesis strategies. Each step in a catalyst synthesis method can play an important role in preparing the most efficient catalyst. Here we report the careful manipulation of the post-synthetic heat treatment procedure—together with control over the metal loading—to prepare a highly efficient 0.2 wt% Pt/TiO2 catalyst for the chemoselective hydrogenation of 3-nitrostyrene. For Pt/TiO2 catalysts with 0.2 and 0.5 wt% loading levels, reduction at 450 °C induces the coverage of TiOx over Pt nanoparticles through a strong metal–support interaction, which is detrimental to their catalytic activities. However, this can be avoided by following calcination treatment with reduction (both at 450 °C), allowing us to prepare an exceptionally active catalyst. Detailed characterization has revealed that the peripheral sites at the Pt/TiO2 interface are the most likely active sites for this hydrogenation reaction. | Source Title: | NATURE CATALYSIS | URI: | https://scholarbank.nus.edu.sg/handle/10635/171742 | ISSN: | 2520-1158 | DOI: | 10.1038/s41929-019-0334-3 |
Appears in Collections: | Elements Staff Publications |
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