Investigating the crystallite morphologies and aggregation in boehmite powders: a combined analysis of two- and three-dimensional electron microscopy with X-ray diffraction
Boehmite (AlOOH) is considered as an important precursor for γ-Al2O3, which when calcinated undergoes topotactic transformation to form the latter. Alumina has extensive applications in fields such as catalysis, abrasives, and cosmetics among others. Boehmite falls under the category of hierarchical...
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EDP Sciences
2024-01-01
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| Series: | Science and Technology for Energy Transition |
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| Online Access: | https://www.stet-review.org/articles/stet/full_html/2024/01/stet20240016/stet20240016.html |
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| author | Sudheer Nivedita Rouchon Virgile Ihiawakrim Dris Lefebvre Christophe Levitz Pierre Lecolier Eric Rabu Pierre Ersen Ovidiu |
| author_facet | Sudheer Nivedita Rouchon Virgile Ihiawakrim Dris Lefebvre Christophe Levitz Pierre Lecolier Eric Rabu Pierre Ersen Ovidiu |
| author_sort | Sudheer Nivedita |
| collection | DOAJ |
| description | Boehmite (AlOOH) is considered as an important precursor for γ-Al2O3, which when calcinated undergoes topotactic transformation to form the latter. Alumina has extensive applications in fields such as catalysis, abrasives, and cosmetics among others. Boehmite falls under the category of hierarchical structures whose structural and textural properties are a result of its compositional and porous hierarchy. Although research has been carried out extensively to understand the complete representation of its structure, a true morphological model is an important key to understanding and fully explaining its transport properties during catalytic processes. 3D electron microscopy helps us to dive deeper into the different hierarchical entities of boehmite, bridging the gaps between the models and assumptions made using some more traditional characterization techniques. We present here a deep insight into the structural and morphological parameters of several commercial boehmites using 3D transmission electron microscopy. Through the extraction of quantitative descriptors pertaining to hierarchical entities and subsequent comparison with bulk analyses, precise and comprehensive information regarding these microstructures can be obtained. The results of our study indicate that boehmite grades, which appear to be identical in terms of their grades, display discrepancies in the uniformity of particle sizes. Moreover, diverse platelet interactions result in varying types of pores in these grades. Furthermore, it has been observed that the interfacial interactions among various crystallographic planes exhibit variations across different specimens, thereby contributing to the distinctive compositions within the aggregates. The variation in aggregates of different boehmite grades is also reflected in the combination of four distinct quantified morphologies. |
| format | Article |
| id | doaj-art-d2471ba18ffd4f589e6d1bf90f428737 |
| institution | OA Journals |
| issn | 2804-7699 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | Science and Technology for Energy Transition |
| spelling | doaj-art-d2471ba18ffd4f589e6d1bf90f4287372025-08-20T02:13:06ZengEDP SciencesScience and Technology for Energy Transition2804-76992024-01-01798410.2516/stet/2024050stet20240016Investigating the crystallite morphologies and aggregation in boehmite powders: a combined analysis of two- and three-dimensional electron microscopy with X-ray diffractionSudheer Nivedita0Rouchon Virgile1Ihiawakrim Dris2Lefebvre Christophe3Levitz Pierre4Lecolier Eric5https://orcid.org/0000-0003-4506-3550Rabu Pierre6https://orcid.org/0000-0002-6779-1527Ersen Ovidiu7Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504 CNRS – Université de StrasbourgIFP Energies nouvelles (IFPEN)Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504 CNRS – Université de StrasbourgInstitut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504 CNRS – Université de StrasbourgPhysicochimie des Electrolytes et Nanosystèmes interfaciaux Laboratory (PHENIX), CNRS and University Pierre et Marie CurieIFP Energies Nouvelles (IFPEN)Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504 CNRS – Université de StrasbourgInstitut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504 CNRS – Université de StrasbourgBoehmite (AlOOH) is considered as an important precursor for γ-Al2O3, which when calcinated undergoes topotactic transformation to form the latter. Alumina has extensive applications in fields such as catalysis, abrasives, and cosmetics among others. Boehmite falls under the category of hierarchical structures whose structural and textural properties are a result of its compositional and porous hierarchy. Although research has been carried out extensively to understand the complete representation of its structure, a true morphological model is an important key to understanding and fully explaining its transport properties during catalytic processes. 3D electron microscopy helps us to dive deeper into the different hierarchical entities of boehmite, bridging the gaps between the models and assumptions made using some more traditional characterization techniques. We present here a deep insight into the structural and morphological parameters of several commercial boehmites using 3D transmission electron microscopy. Through the extraction of quantitative descriptors pertaining to hierarchical entities and subsequent comparison with bulk analyses, precise and comprehensive information regarding these microstructures can be obtained. The results of our study indicate that boehmite grades, which appear to be identical in terms of their grades, display discrepancies in the uniformity of particle sizes. Moreover, diverse platelet interactions result in varying types of pores in these grades. Furthermore, it has been observed that the interfacial interactions among various crystallographic planes exhibit variations across different specimens, thereby contributing to the distinctive compositions within the aggregates. The variation in aggregates of different boehmite grades is also reflected in the combination of four distinct quantified morphologies.https://www.stet-review.org/articles/stet/full_html/2024/01/stet20240016/stet20240016.htmlboehmitenanocrystalelectron tomographyparticle size distributioncrystal morphologyaggregation |
| spellingShingle | Sudheer Nivedita Rouchon Virgile Ihiawakrim Dris Lefebvre Christophe Levitz Pierre Lecolier Eric Rabu Pierre Ersen Ovidiu Investigating the crystallite morphologies and aggregation in boehmite powders: a combined analysis of two- and three-dimensional electron microscopy with X-ray diffraction Science and Technology for Energy Transition boehmite nanocrystal electron tomography particle size distribution crystal morphology aggregation |
| title | Investigating the crystallite morphologies and aggregation in boehmite powders: a combined analysis of two- and three-dimensional electron microscopy with X-ray diffraction |
| title_full | Investigating the crystallite morphologies and aggregation in boehmite powders: a combined analysis of two- and three-dimensional electron microscopy with X-ray diffraction |
| title_fullStr | Investigating the crystallite morphologies and aggregation in boehmite powders: a combined analysis of two- and three-dimensional electron microscopy with X-ray diffraction |
| title_full_unstemmed | Investigating the crystallite morphologies and aggregation in boehmite powders: a combined analysis of two- and three-dimensional electron microscopy with X-ray diffraction |
| title_short | Investigating the crystallite morphologies and aggregation in boehmite powders: a combined analysis of two- and three-dimensional electron microscopy with X-ray diffraction |
| title_sort | investigating the crystallite morphologies and aggregation in boehmite powders a combined analysis of two and three dimensional electron microscopy with x ray diffraction |
| topic | boehmite nanocrystal electron tomography particle size distribution crystal morphology aggregation |
| url | https://www.stet-review.org/articles/stet/full_html/2024/01/stet20240016/stet20240016.html |
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