Transition-Metal Nanoparticles in Hollow Zeolite Single Crystals as Bifunctional and Size-Selective Hydrogenation Catalysts

Transition-Metal Nanoparticles in Hollow Zeolite Single Crystals as Bifunctional and Size-Selective Hydrogenation Catalysts

Transition-metal nanoparticles (Co, Ni, and Cu) encapsulated in hollow zeolite single crystals were prepared by recrystallization of impregnated bulk MFI crystals in the presence of tetrapropylammonium (TPAOH) solutions. The size and number of particles in hollow MFI depended mainly on the aluminum...

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Veröffentlicht in:Chemistry of materials 2015-01, Vol.27 (1), p.276-282
Hauptverfasser: Li, Shiwen, Tuel, Alain, Laprune, David, Meunier, Frédéric, Farrusseng, David
Format: Artikel
Sprache:eng
Schlagworte:
Catalysis
Chemical Sciences
Environment and Society
Environmental Sciences
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Zusammenfassung:Transition-metal nanoparticles (Co, Ni, and Cu) encapsulated in hollow zeolite single crystals were prepared by recrystallization of impregnated bulk MFI crystals in the presence of tetrapropylammonium (TPAOH) solutions. The size and number of particles in hollow MFI depended mainly on the aluminum content. The encapsulation of the nanoparticles prevented them from growing, thus enabling the control of particle size even after high temperature treatments. For low metal loadings (
ISSN:0897-4756
1520-5002
DOI:10.1021/cm503921f