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Engineering Growth Defects: A New Route Towards Hierarchical ZSM-5 Zeolite with High-Density Intracrystalline Mesopores

Abstract

Hierarchical zeolites are promising solid acid catalysts in industrial processes and in conversions of bulky molecules because they offer fast mass transfer along with size and shape selectivity, however, their synthesis always involved either complicated post-synthetic modifications or cost-intensive templates. In this work, engineering growth defects has been developed as a new and efficient strategy for preparing hierarchical ZSM-5 zeolite with high specific surface area and abundant uniform intracrystalline mesopores. This route only involved certain energy-efficient conditions, e.g., tender crystallization conditions and meso-templates-free. Combining tender crystallization conditions with an optimal original Si/Al ratio (150-300) in colloid synthesis system was found to be the key to successfully engineer the growth defects. Importantly, they even exhibited higher catalytic activities for benzaldehyde-alcohol condensation reactions than the mesoporous ZSM-5 zeolite prepared using mesoscale templates.

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Publication details

The article was received on 22 Jul 2017, accepted on 28 Sep 2017 and first published on 29 Sep 2017


Article type: Paper
DOI: 10.1039/C7CE01323J
Citation: CrystEngComm, 2017, Accepted Manuscript
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    Engineering Growth Defects: A New Route Towards Hierarchical ZSM-5 Zeolite with High-Density Intracrystalline Mesopores

    B. Peng, H. Zou, L. He, P. Wang, Z. Shi, L. Zhu, R. Wang and Z. Zhang, CrystEngComm, 2017, Accepted Manuscript , DOI: 10.1039/C7CE01323J

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