The DOI matches its Crossref record; 44 of the 44 references it cites were found in a registry or an index.
Hierarchical Y and USY Zeolites Designed by Post‐Synthetic Strategies
Open accessAbstract
Strategic combinations of affordable and scalable post‐synthetic modifications enabled to design a broad family of hierarchical Y and USY zeolites (FAU topology) independent on the Si/Al ratio. Pristine (Y, Si/Al = 2.4), steamed (USY, Si/Al = 2.6), and steamed and dealuminated (USY, Si/Al = 15 and 30) zeolites were exposed to a variety of acid (H 4 EDTA and Na 2 H 2 EDTA) and base (NaOH) treatments, which led to the introduction of mesopore surfaces up to 500 m 2 g−1, while preserving the intrinsic zeolite properties. Pristine Y and USY zeolites (Si/Al ∼ 2.5) required mild dealumination (to Si/Al > 4 in the case of Y) to facilitate subsequent efficient desilication. Alkaline treatment of Y and USY zeolites with low Si/Al ratios (∼4–6) led to an abundance of Al‐rich debris, which could be removed by a subsequent mild acid wash. On the other hand, severely steamed and dealuminated, hence Si‐rich, USY zeolites (Si/Al = 15 and 30) proved extremely sensitive to the alkaline solution, displaying facile dissolution and substantial amorphization. For the latter group of ultra‐stable Y zeolites, the presence of TPA+ in the alkaline solution enables to protect the zeolite structures upon the introduction of mesoporosity by desilication, preserving crystallinity and micropore volume. The sorption and catalytic properties of the hierarchical Y and USY zeolites were superior compared to the conventional counterparts.
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Cited by
Hierarchically Structured Zeolites: From Design to Application
Chen, L.-H., Sun, M.-H., Wang, Z., Yang, W., Xie, Z., & Su, B.-L. (2020) · Chemical Reviews · doi:10.1021/acs.chemrev.0c00016 · Cited by 724
Tailored crystalline microporous materials by post-synthesis modification
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Self-citationRealizing the Commercial Potential of Hierarchical Zeolites: New Opportunities in Catalytic Cracking
Li, K., Valla, J., & Garcia‐Martinez, J. (2014) · ChemCatChem · doi:10.1002/cctc.201300345 · Cited by 470
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Self-citationChallenges on molecular aspects of dealumination and desilication of zeolites
Silaghi, M.-C., Chizallet, C., & Raybaud, P. (2014) · Microporous and Mesoporous Materials · doi:10.1016/j.micromeso.2014.02.040 · Cited by 325
Metadata
- Authors
- Verboekend, D., Vilé, G., & Pérez‐Ramírez, J.
- Venue
- Advanced Functional Materials
- Publisher
- Wiley
- Published
- 2011-12-21
- Volume
- 22
- Issue
- 5
- Pages
- 916-928
- ISSN
- 1616-301X (ISSN-L)
- 1616-3028
- OpenAlex
- W2052082399
- Cited by
- 364
- References
- 44
- FWCI
- 11.00
- Type
- journal article
- Language
- en
- Open access
- green
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