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Synthesis of zeolite SSZ-24 using a catalytic amount of SSZ-13 seeds

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Abstract

SSZ-24, an AFI-type aluminosilicate, proved to be a zeolite with poor synthesis reproducibility and a slow crystallization rate. The present study deals with the preparation of SSZ-24 by a seed-assisted approach. SSZ-13 and SSZ-24 zeolites are employed as seeds and the impact of the seed content on the formation of SSZ-24 is studied. Both types of zeolites accelerate the zeolite nucleation, shorten the crystallization time, and lead to the formation of pure and highly crystalline SSZ-24. In addition, SSZ-13 seeds are more efficient in terms of rapid crystallization and crystallinity level. Pure and highly crystalline SSZ-24 is readily obtained even though the amount of SSZ-13 seeds was decreased to a “catalytic level”, i.e. 0.3 wt%. The higher seeding power of SSZ-13 seeds is attributed to the presence of framework Al, which stabilizes structural elements that promote the SSZ-24 nucleation.

Graphical abstract: Synthesis of zeolite SSZ-24 using a catalytic amount of SSZ-13 seeds

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Publication details

The article was received on 01 Aug 2019, accepted on 05 Sep 2019 and first published on 05 Sep 2019


Article type: Research Article
DOI: 10.1039/C9QI00971J
Inorg. Chem. Front., 2019, Advance Article

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    Synthesis of zeolite SSZ-24 using a catalytic amount of SSZ-13 seeds

    L. Tang, K. Haw, P. He, Q. Fang, S. Qiu and V. Valtchev, Inorg. Chem. Front., 2019, Advance Article , DOI: 10.1039/C9QI00971J

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