Finned zeolite catalysts.
Journal
Nature materials
ISSN: 1476-4660
Titre abrégé: Nat Mater
Pays: England
ID NLM: 101155473
Informations de publication
Date de publication:
Oct 2020
Oct 2020
Historique:
received:
06
02
2020
accepted:
30
06
2020
pubmed:
12
8
2020
medline:
12
8
2020
entrez:
12
8
2020
Statut:
ppublish
Résumé
There is growing evidence for the advantages of synthesizing nanosized zeolites with markedly reduced internal diffusion limitations for enhanced performances in catalysis and adsorption. Producing zeolite crystals with sizes less than 100 nm, however, is non-trivial, often requires the use of complex organics and typically results in a small product yield. Here we present an alternative, facile approach to enhance the mass-transport properties of zeolites by the epitaxial growth of fin-like protrusions on seed crystals. We validate this generalizable methodology on two common zeolites and confirm that fins are in crystallographic registry with the underlying seeds, and that secondary growth does not impede access to the micropores. Molecular modelling and time-resolved titration experiments of finned zeolites probe internal diffusion and reveal substantial improvements in mass transport, consistent with catalytic tests of a model reaction, which show that these structures behave as pseudo-nanocrystals with sizes commensurate to that of the fin. This approach could be extended to the rational synthesis of other zeolite and aluminosilicate materials.
Identifiants
pubmed: 32778812
doi: 10.1038/s41563-020-0753-1
pii: 10.1038/s41563-020-0753-1
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
1074-1080Subventions
Organisme : Welch Foundation
ID : E-1882
Organisme : Welch Foundation
ID : E-1794
Organisme : DOE | Advanced Research Projects Agency - Energy (Advanced Research Projects Agency - Energy - U.S. Department of Energy)
ID : DE-SC0001004
Organisme : DOE | Advanced Research Projects Agency - Energy (Advanced Research Projects Agency - Energy - U.S. Department of Energy)
ID : DE-SC0014468
Organisme : Vetenskapsrådet (Swedish Research Council)
ID : 2017-0432
Organisme : Knut och Alice Wallenbergs Stiftelse (Knut and Alice Wallenberg Foundation)
ID : 2012.0112
Organisme : EC | EU Framework Programme for Research and Innovation H2020 | H2020 Priority Excellent Science | H2020 European Research Council (H2020 Excellent Science - European Research Council)
ID : 321140
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