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Hierarchical Zeolitic Murray Material with Mass Transfer Advantage Promotes Catalytic Efficiency Improvement

Abstract

Employing carbon-packed zeolite nanocrystals as primary building blocks, hierarchically porous MFI-type zeolites with precise dimensions spanning meso- and micro-length scale were successfully synthesized using an in-situ crystallization strategy. The generalized Murray’s law was firstly used to theoretically investigate the advantage of porous hierarchy. And the porosity distribution and coordination in the resultant zeolite single crystals was found highly following the generalized Murray’s law. Probed by the catalytic cracking reaction of isopropyl benzene, the as-prepared Hier-ZSM-5 exhibited much higher conversion (~74.5%), compared with nanoZSM-5 (~30%) and Bulky ZSM-5 (~28.6%). Outstanding catalytic performance of Murray zeolite material was ascribed to the highly enhanced mass transfer in heterogeneous catalytic reaction. Such hierarchical single zeolite structure, designed by adopting the generalized Murray’s law, improves the thermal/hydrothermal stability of nano zeolites, and offer an alternative optionfor long-term stable catalyst.

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Publication details

The article was received on 24 Jul 2018, accepted on 12 Sep 2018 and first published on 12 Sep 2018


Article type: Research Article
DOI: 10.1039/C8QI00761F
Citation: Inorg. Chem. Front., 2018, Accepted Manuscript
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    Hierarchical Zeolitic Murray Material with Mass Transfer Advantage Promotes Catalytic Efficiency Improvement

    Z. Peng, L. Chen, M. Sun, H. Zhao, Z. Wang, Y. Li, L. Li, J. Zhou, Z. Liu and B. Su, Inorg. Chem. Front., 2018, Accepted Manuscript , DOI: 10.1039/C8QI00761F

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