Please use this identifier to cite or link to this item: 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
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