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Issue 3, 2015
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Direct, single-step synthesis of hierarchical zeolites without secondary templating

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Abstract

Hierarchical ZSM-5 was directly synthesized by controlling the nucleation, growth and template-free self-assembly of zeolite precursors formed in the initial stage of the zeolite crystallization process. The facile synthesis results in spherical particles primarily composed of a micro-mesoporous core of aggregated 30–50 nm MFI nanocrystals, and a thin crystalline shell. MFI nanocrystal assembly coupled with a possible dissolution–crystallization mechanism results in a template-free route to broadly distributed mesopores and, thereby, a ca. 25 nm diffusion length in a micrometer-sized particle. The materials exhibit enhanced mass transport and superior catalytic activity for bulky molecules.

Graphical abstract: Direct, single-step synthesis of hierarchical zeolites without secondary templating

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Publication details

The article was received on 23 Sep 2014, accepted on 25 Nov 2014 and first published on 25 Nov 2014


Article type: Paper
DOI: 10.1039/C4TA05031B
Author version available: Download Author version (PDF)
Citation: J. Mater. Chem. A, 2015,3, 1298-1305
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    Direct, single-step synthesis of hierarchical zeolites without secondary templating

    Z. Wang, C. Li, H. J. Cho, S. Kung, M. A. Snyder and W. Fan, J. Mater. Chem. A, 2015, 3, 1298
    DOI: 10.1039/C4TA05031B

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