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Issue 9, 2018
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An efficient synthetic route to accelerate zeolite synthesis via radicals

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Abstract

The energy-efficient and green synthesis of zeolites that are highly demanded in the chemical industry has been a focus for decades. Here we report a highly efficient radical-route to accelerate the synthesis of zeolites via using sodium persulfate (denoted as SPS) as an additive in the hydrothermal reaction system of SiO2–TPAOH–H2O. The hydrothermal synthesis of highly crystalline silicalite-1 was shortened to 16 h from 24 h in the presence of 0.02 M SPS. Electron paramagnetic resonance (EPR) was used to characterize the radical species induced by SPS. More importantly, as compared with the conventional synthetic system, highly crystalline silicalite-1 can be synthesized with only half of the amount of organic structure-directing agents in the presence of SPS. With this route, we can not only speed up the hydrothermal crystallization of a silicalite-1 zeolite but also greatly reduce the usage of organic structure-directing agents. This radical-route demonstrates an efficient and green route for the synthesis of zeolites.

Graphical abstract: An efficient synthetic route to accelerate zeolite synthesis via radicals

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Publication details

The article was received on 10 May 2018, accepted on 30 Jun 2018 and first published on 02 Jul 2018


Article type: Research Article
DOI: 10.1039/C8QI00441B
Citation: Inorg. Chem. Front., 2018,5, 2106-2110

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    An efficient synthetic route to accelerate zeolite synthesis via radicals

    P. Cheng, G. Feng, C. Sun, W. Xu, J. Su, W. Yan and J. Yu, Inorg. Chem. Front., 2018, 5, 2106
    DOI: 10.1039/C8QI00441B

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