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De-agglomeration of IZM-2 zeolite crystals by post-synthetic treatment
Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK).
Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK).
Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK).
Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK).
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Number of Authors: 7
2016 (English)In: Microporous and Mesoporous Materials, ISSN 1387-1811, E-ISSN 1873-3093, Vol. 225, 185-191 p.Article in journal (Refereed) Published
Abstract [en]

Highly intergrown nanocrystals are commonly observed in zeolite samples, and the densely packed agglomerates may result in small secondary porosity, which restricts the advantage of hierarchical structures. In this work we take IZM-2 zeolite as an example to demonstrate a post-treatment method with diluted hydrofluoric acid solution, which de-agglomerates intergrown zeolite nanocrystals and improves the secondary porosity. The treated samples preserve high crystallinity, similar framework composition and distinctively higher external surface area compared to the agglomerated ones. The results show that this treatment is an effective method for de-agglomeration of intergrown nanocrystals without affecting the original framework.

Place, publisher, year, edition, pages
2016. Vol. 225, 185-191 p.
Keyword [en]
Zeolite, Nanocrystals, De-agglomeration, Post treatment, Hierarchical porosity
National Category
Chemical Sciences Nano Technology Materials Engineering
Identifiers
URN: urn:nbn:se:su:diva-130161DOI: 10.1016/j.micromeso.2015.12.021ISI: 000373421700020OAI: oai:DiVA.org:su-130161DiVA: diva2:927594
Available from: 2016-05-12 Created: 2016-05-09 Last updated: 2016-05-12Bibliographically approved

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Li, YunxiangZheng, HaoquanBernin, DianaEdén, MattiasZou, XiaodongGao, Feifei
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Department of Materials and Environmental Chemistry (MMK)
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Microporous and Mesoporous Materials
Chemical SciencesNano TechnologyMaterials Engineering

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