Issue 3, 2015

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

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

Supplementary files

Article information

Article type
Paper
Submitted
23 Sep 2014
Accepted
25 Nov 2014
First published
25 Nov 2014

J. Mater. Chem. A, 2015,3, 1298-1305

Author version available

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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