Anchoring boron atoms to the specific tetrahedral sites of borosilicate MFI by imidazolium-based molecules

Yufang Ma, Lei Wang, Lei Chen, Meikun Shen, Xue Yang, Tengteng Wang, Feixiang Yuan, Yu Zhou, Jun Wang, Hongjun Zhu

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Regulating heteroatom-substituted tetrahedral sites (T sites) within a zeolite crystal significantly influences the zeolite properties. Herein, the as-synthesized MFI zeolite with tailored boron locations at various T sites is unveiled by powder X-ray crystallography. The experimental results imply that four similar but structurally different imidazolium-based organic structure-directing agents (OSDAs) adopted in the synthetic system can effectively control the location of final boron-enriched T sites. It is demonstrated that the specific boron location depends on the corresponding OSDA coordinates and their molecular structures. Furthermore, boron-enriched composite building units in the MFI framework are derived as well. Such boron-enriched T sites tailored by zeolite framework (host) and OSDA molecule (guest) interactions afford an effective strategy for the rational design of zeotype catalysts.

Original languageEnglish
Pages (from-to)2118-2125
Number of pages8
JournalCrystEngComm
Volume24
Issue number11
DOIs
StatePublished - 7 Feb 2022

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