Issue 48, 2021

New insight into the inductive effect of various seeds on the template-free synthesis of ZSM-5 zeolite

Abstract

It is of great significance to clarify the roles that various seeds play in the induced synthesis of target zeolites from a viewpoint of topological structure. Zeolites, including ZSM-5, β, mordenite, ZSM-35, ZSM-22, SSZ-13, SSZ-24 and analcite, were used as seeds for the template-free synthesis of ZSM-5. It was found that zeolites with lower framework density and identical composite building units (CBUs) and secondary building units (SBUs) could be used as seeds for the successful synthesis of ZSM-5. Zeolites (ZSM-5, β, mordenite, ZSM-35 and ZSM-22) having identical CBUs and SBUs to ZSM-5 were capable of accelerating the crystallization of ZSM-5, whereas zeolites (SSZ-13 and SSZ-24) lacking identical CBUs and SBUs could act as seeds to synthesize ZSM-5 zeolite only if they possessed lower framework density than ZSM-5. As such, zeolites possessing simultaneously identical CBUs and/or SBUs and low framework density had a strong inductive effect in template-free synthesis of ZSM-5.

Graphical abstract: New insight into the inductive effect of various seeds on the template-free synthesis of ZSM-5 zeolite

Supplementary files

Article information

Article type
Paper
Submitted
10 Aug. 2021
Accepted
09 Nov. 2021
First published
10 Nov. 2021

CrystEngComm, 2021,23, 8641-8649

New insight into the inductive effect of various seeds on the template-free synthesis of ZSM-5 zeolite

Q. Li, W. Cong, C. Xu, S. Zhang, F. Wang, D. Han, G. Wang and L. Bing, CrystEngComm, 2021, 23, 8641 DOI: 10.1039/D1CE01067K

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