Journal article 853 views 115 downloads
From amorphous to ordered: Structural transformation of Pd nanoclusters in 1-pentyne hydrogenation reactions
Journal of Catalysis, Volume: 397, Pages: 58 - 63
Swansea University Author:
Richard Palmer
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DOI (Published version): 10.1016/j.jcat.2021.03.019
Abstract
Nanostructured palladium catalysts are used industrially for selective alkyne hydrogenation reactions. However, structural changes can lead to a loss of performance. In this study, we show the evolution of the atomic structure of monodispersed Pd nanoclusters undergoing a vapour-phase 1-pentyne hydr...
| Published in: | Journal of Catalysis |
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| ISSN: | 0021-9517 |
| Published: |
Elsevier BV
2021
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa56682 |
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| Abstract: |
Nanostructured palladium catalysts are used industrially for selective alkyne hydrogenation reactions. However, structural changes can lead to a loss of performance. In this study, we show the evolution of the atomic structure of monodispersed Pd nanoclusters undergoing a vapour-phase 1-pentyne hydrogenation reaction. A specific structural transformation, from amorphous to highly symmetrical structures, is observed at the atomic level with aberration-corrected scanning transmission electron microscopy (AC-STEM). This surprising behaviour which occurs concurrently with the alkyne hydrogenation reaction, is clearly size-dependent. The results provide new understanding of the long-term stability of commercial heterogeneous catalysts. |
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| Keywords: |
Mass-selected, Palladium nanoclusters, AC-STEM, Alkyne hydrogenation |
| College: |
Faculty of Science and Engineering |
| Start Page: |
58 |
| End Page: |
63 |