期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 59, 期 44, 页码 19582-19591出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202007069
关键词
alkylation; cracking; hierarchical zeolites; intracrystalline porous hierarchy; zeolite Beta
资金
- Program for Changjiang Scholars and Innovative Research Team in University of the Chinese Ministry of Education [IRT_15R52]
- Major programs of technical innovation in Hubei [2018AAA012]
- Hubei Provincial Natural Science Foundation [2018CFA054]
- 111 Projects [B17020, B20002]
- [NSFC-21671155]
- [NSFC-U1663225]
Zeolite Beta single crystals with intracrystalline hierarchical porosity at macro-, meso-, and micro-length scales can effectively overcome the diffusion limitations in the conversion of bulky molecules. However, the construction of large zeolite Beta single crystals with such porosity is a challenge. We report herein the synthesis of hierarchically ordered macro-mesoporous single-crystalline zeolite Beta (OMMS-Beta) with a rare micron-scale crystal size by an in situ bottom-up confined zeolite crystallization strategy. The fully interconnected intracrystalline macro-meso-microporous hierarchy and the micron-sized single-crystalline nature of OMMS-Beta lead to improved accessibility to active sites and outstanding (hydro)thermal stability. Higher catalytic performances in gas-phase and liquid-phase acid-catalyzed reactions involving bulky molecules are obtained compared to commercial Beta and nanosized Beta zeolites. The strategy has been extended to the synthesis of other zeolitic materials, including ZSM-5, TS-1, and SAPO-34.
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