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Finned zeolite catalysts.
Dai, Heng; Shen, Yufeng; Yang, Taimin; Lee, Choongsze; Fu, Donglong; Agarwal, Ankur; Le, Thuy Thanh; Tsapatsis, Michael; Palmer, Jeremy C; Weckhuysen, Bert M; Dauenhauer, Paul J; Zou, Xiaodong; Rimer, Jeffrey D.
Afiliación
  • Dai H; Department of Chemical and Biomolecular Engineering, University of Houston, Houston, TX, USA.
  • Shen Y; Department of Chemical and Biomolecular Engineering, University of Houston, Houston, TX, USA.
  • Yang T; Department of Materials and Environmental Chemistry, Stockholm University, Stockholm, Sweden.
  • Lee C; Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN, USA.
  • Fu D; Inorganic Chemistry and Catalysis Group, Debye Institute for Nanomaterials Science, Utrecht University, Utrecht, the Netherlands.
  • Agarwal A; Department of Chemical and Biomolecular Engineering, University of Houston, Houston, TX, USA.
  • Le TT; Department of Chemical and Biomolecular Engineering, University of Houston, Houston, TX, USA.
  • Tsapatsis M; Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN, USA.
  • Palmer JC; Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD, USA.
  • Weckhuysen BM; Department of Chemical and Biomolecular Engineering, University of Houston, Houston, TX, USA.
  • Dauenhauer PJ; Inorganic Chemistry and Catalysis Group, Debye Institute for Nanomaterials Science, Utrecht University, Utrecht, the Netherlands.
  • Zou X; Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN, USA.
  • Rimer JD; Department of Materials and Environmental Chemistry, Stockholm University, Stockholm, Sweden.
Nat Mater ; 19(10): 1074-1080, 2020 Oct.
Article en En | MEDLINE | ID: mdl-32778812
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.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nat Mater Asunto de la revista: CIENCIA / QUIMICA Año: 2020 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nat Mater Asunto de la revista: CIENCIA / QUIMICA Año: 2020 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Reino Unido