Constructing Hierarchical Zeolites with Highly Complete Framework via Controlled Desilication
Desilication in alkaline medium has been widely used in construction of hierarchical zeolites for industrially relevant catalytic processes. The built of hierarchy in zeolites, especially with low aluminum stability or high Si/Al ratio, often suffers from uncontrolled destruction of zeolitic framework, accompanied by a significant loss of microporous domains and intrinsic acidity after desilication. Here, we report a novel and simple methodology for preparation of hierarchical zeolites with highly complete framework and minimum sacrifice of microporosity and acidity. The pre-impregnated amines in zeolite micropores act as inner pore-directing agents (iPDAs), largely protecting the zeolitic framework and moderating the silicon extraction during the alkaline treatment. The resulting hierarchical zeolites exhibit high crystallinity, tunable hierarchy, stable framework, and well-preserved acidity, endowing them with significantly improved mass transport properties and enhanced activities in catalytic conversion of methanol or furfural.
Authors
- Yonggang Ji (ORCID: https://orcid.org/0000-0002-3264-8560)
- Caixia Miao
- Weiyu Song (ORCID: https://orcid.org/0000-0001-5720-204X)
- Baojian Shen (ORCID: https://orcid.org/0000-0003-1889-309X)
- Yanfeng Shen (ORCID: https://orcid.org/0000-0002-3025-4664)
- Wu Zhi (ORCID: https://orcid.org/0000-0002-8160-6615)
- Haorong Chen
- Chunming Xu
- Zhengxing Qin (ORCID: https://orcid.org/0000-0002-0277-9885)
- Xiaochun Zhu (ORCID: https://orcid.org/0000-0003-4102-2938)
- Mengwei Jiang
- Xinyu Wang (ORCID: https://orcid.org/0009-0004-9019-4810)
- Yu Gao (ORCID: https://orcid.org/0009-0000-5393-6310)
Institutions
- Beijing Institute of Petrochemical Technology (CN)
- China University of Petroleum, Beijing (CN)
- China University of Petroleum, East China (CN)
- Eindhoven University of Technology (NL)
- China National Petroleum Corporation (China) (CN)
Publication Details
- Journal
- Angewandte Chemie International Edition
- Published
- 2024-08-23
- DOI
- https://doi.org/10.1002/anie.202411446
- Citations
- 17
- Primary Topic
- Zeolite Catalysis and Synthesis
- Type
- article
- Field-Weighted Citation Impact
- 2.69
Funders
- National Natural Science Foundation of China
- Chinese Academy of Sciences
- Foundation for Innovative Research Groups of the National Natural Science Foundation of China