Carrier-Induced Modification of Palladium Nanoparticles on Porous Boron Nitride for Alkyne Semi-Hydrogenation.
boron nitride
doping
heterogeneous catalysis
palladium
selective hydrogenation
Journal
Angewandte Chemie (International ed. in English)
ISSN: 1521-3773
Titre abrégé: Angew Chem Int Ed Engl
Pays: Germany
ID NLM: 0370543
Informations de publication
Date de publication:
26 Oct 2020
26 Oct 2020
Historique:
received:
22
04
2020
pubmed:
7
7
2020
medline:
7
7
2020
entrez:
7
7
2020
Statut:
ppublish
Résumé
Chemical modifiers enhance the efficiency of metal catalysts in numerous applications, but their introduction often involves toxic or expensive precursors and complicates the synthesis. Here, we show that a porous boron nitride carrier can directly modify supported palladium nanoparticles, originating unparalleled performance in the continuous semi-hydrogenation of alkynes. Analysis of the impact of various structural parameters reveals that using a defective high surface area boron nitride and ensuring a palladium particle size of 4-5 nm is critical for maximizing the specific rate. The combined experimental and theoretical analyses point towards boron incorporation from defects in the support to the palladium subsurface, creating the desired isolated ensembles determining the selectivity. This practical approach highlights the unexplored potential of using tailored carriers for catalyst design.
Identifiants
pubmed: 32628798
doi: 10.1002/anie.202005842
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
19639-19644Subventions
Organisme : Ministerio de Ciencia, Innovación y Universidades
ID : SEV-2013-0319
Organisme : Eidgenössische Technische Hochschule Zürich
Organisme : Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
Informations de copyright
© 2020 Wiley-VCH GmbH.
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