Assessing Inter and Intra-particle Heterogeneity in Alumina-poor H-ZSM-5 Zeolites
| العنوان: | Assessing Inter and Intra-particle Heterogeneity in Alumina-poor H-ZSM-5 Zeolites |
|---|---|
| المؤلفون: | Guillaume Fleury, Michel Sliwa, Alexey V. Kubarev, Koen Kennes, Jordi Van Loon, Coralie Demaret, Maarten B. J. Roeffaers, Bogdan Harbuzaru, Olivier Delpoux, Sylvie Maury |
| المساهمون: | Centre for Surface Chemistry and Catalysis, Catholic University of Leuven - Katholieke Universiteit Leuven (KU Leuven), IFP Energies nouvelles (IFPEN), Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement - UMR 8516 (LASIRE), Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Centrale Lille Institut (CLIL), Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Centrale Lille Institut (CLIL)-Institut de Chimie du CNRS (INC)-Université de Lille |
| المصدر: | ChemCatChem ChemCatChem, Wiley, 2017, 9 (18), pp.3440-3445. ⟨10.1002/cctc.201700696⟩ ChemCatChem, 2017, 9 (18), pp.3440-3445. ⟨10.1002/cctc.201700696⟩ |
| بيانات النشر: | Wiley, 2017. |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | Scanning electron microscope, Analytical chemistry, Infrared spectroscopy, Super-resolution fluorescence microscopy, 02 engineering and technology, 010402 general chemistry, 01 natural sciences, Catalysis, Mesopores, Inorganic Chemistry, Physisorption, Electron microscopy, Physical and Theoretical Chemistry, Zeolite, Chemistry, Acidity, Organic Chemistry, 021001 nanoscience & nanotechnology, Crystallographic defect, 0104 chemical sciences, [CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry, Zeolites, Physical chemistry, ZSM-5, 0210 nano-technology, Mesoporous material, Macropores |
| الوصف: | In this report we reveal the presence of significant variations in Brønsted catalytic activity within and between individual H-ZSM-5 zeolite crystals. Fluorescence microscopy in combination with a fluorogenic probe was used to resolve the catalytic activity at the nanoscale. The observed variations in catalytic activity could be directly linked to structural parameters and crystal morphology observed in scanning electron microscopy and by specifically staining crystal defects. The obtained results are directly compared with ensemble averaged information from techniques such as pyridine IR spectroscopy and nitrogen physisorption, typically used to characterize acid zeolites. The inter- and intra-particle heterogeneities resolved by the employed fluorescence approach remain unaddressed by bulk characterization. Our experimental results relate the heterogeneous catalytic activity to variation in both the Si/Al ratio and mesoporosity induced during the zeolite synthesis. ispartof: ChemCatChem vol:9 issue:18 pages:3440-3445 status: published |
| وصف الملف: | application/pdf |
| تدمد: | 1867-3880 1867-3899 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bc2fef3831fe979664ed18b84d39e2b4 https://doi.org/10.1002/cctc.201700696 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....bc2fef3831fe979664ed18b84d39e2b4 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 18673880 18673899 |
|---|