Academic Journal
Noninvasive Nanoscopy Uncovers the Impact of the Hierarchical Porous Structure on the Catalytic Activity of Single Dealuminated Mordenite Crystals
| العنوان: | Noninvasive Nanoscopy Uncovers the Impact of the Hierarchical Porous Structure on the Catalytic Activity of Single Dealuminated Mordenite Crystals |
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| المؤلفون: | Kubarev, Alexey V., Janssen, Kris P. F., Roeffaers, Maarten B. J. |
| المساهمون: | FEI, Fonds voor Wetenschappelijk Onderzoek, KU Leuven Research Fund, Belspo, Flemish Government, European Union's Seventh Framework Programme |
| المصدر: | ChemCatChem ; volume 7, issue 22, page 3646-3650 ; ISSN 1867-3880 1867-3899 |
| بيانات النشر: | Wiley |
| سنة النشر: | 2015 |
| المجموعة: | Wiley Online Library (Open Access Articles via Crossref) |
| الوصف: | Spatial restrictions around catalytic sites, provided by molecular‐sized micropores, are beneficial to reaction selectivity but also inherently limit diffusion. The molecular transport can be enhanced by introducing meso‐ and macropores. However, the impact of this extraframework porosity on the local nanoscale reactivity is relatively unexplored. Herein we show that the area of enhanced reactivity in hierarchical zeolite, examined with super‐resolution fluorescence microscopy, is spatially restricted to narrow zones around meso‐ and macropores, as observed with focused ion‐beam‐assisted scanning electron microscopy. This comparison indicates that reagent molecules efficiently reach catalytic active sites only in the micropores surrounding extraframework porosity and that extensive macroporosity does not warrant optimal reactivity distribution throughout a hierarchical porous zeolite. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1002/cctc.201500708 |
| DOI: | 10.1002/cctc.201500708/fullpdf |
| الاتاحة: | http://dx.doi.org/10.1002/cctc.201500708 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fcctc.201500708 http://onlinelibrary.wiley.com/wol1/doi/10.1002/cctc.201500708/fullpdf |
| Rights: | http://creativecommons.org/licenses/by-nc/4.0/ |
| رقم الانضمام: | edsbas.9F88713B |
| قاعدة البيانات: | BASE |
| DOI: | 10.1002/cctc.201500708 |
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