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Small-angle X-ray scattering intensity of multiscale models of spheroids

The microstructure of heterogeneous catalysts often consists of multiscale aggregates of nanoparticles, some of which are highly anisotropic. Therefore, small-angle X-ray scattering, in classical or anomalous mode, is a valuable tool to characterize this kind of material. Yet, the classical exploita...

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Autores principales: Duchêne, Pascal, Humbert, Séverine, Sorbier, Loïc, Moreaud, Maxime
Formato: Online Artículo Texto
Lenguaje:English
Publicado: International Union of Crystallography 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9901919/
https://www.ncbi.nlm.nih.gov/pubmed/36777144
http://dx.doi.org/10.1107/S1600576722011359
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author Duchêne, Pascal
Humbert, Séverine
Sorbier, Loïc
Moreaud, Maxime
author_facet Duchêne, Pascal
Humbert, Séverine
Sorbier, Loïc
Moreaud, Maxime
author_sort Duchêne, Pascal
collection PubMed
description The microstructure of heterogeneous catalysts often consists of multiscale aggregates of nanoparticles, some of which are highly anisotropic. Therefore, small-angle X-ray scattering, in classical or anomalous mode, is a valuable tool to characterize this kind of material. Yet, the classical exploitation of the scattered intensities through form and structure factors or by means of Boolean models of spheres is questionable. Here, it is proposed to interpret the scattered intensities through the use of multiscale Boolean models of spheroids. The numerical procedure to compute scattered intensities of such models is given and then validated on asymptotic diluted Boolean models, and its applicability is demonstrated for the characterization of alumina catalyst supports.
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spelling pubmed-99019192023-02-10 Small-angle X-ray scattering intensity of multiscale models of spheroids Duchêne, Pascal Humbert, Séverine Sorbier, Loïc Moreaud, Maxime J Appl Crystallogr Research Papers The microstructure of heterogeneous catalysts often consists of multiscale aggregates of nanoparticles, some of which are highly anisotropic. Therefore, small-angle X-ray scattering, in classical or anomalous mode, is a valuable tool to characterize this kind of material. Yet, the classical exploitation of the scattered intensities through form and structure factors or by means of Boolean models of spheres is questionable. Here, it is proposed to interpret the scattered intensities through the use of multiscale Boolean models of spheroids. The numerical procedure to compute scattered intensities of such models is given and then validated on asymptotic diluted Boolean models, and its applicability is demonstrated for the characterization of alumina catalyst supports. International Union of Crystallography 2023-02-01 /pmc/articles/PMC9901919/ /pubmed/36777144 http://dx.doi.org/10.1107/S1600576722011359 Text en © Pascal Duchêne et al. 2023 https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
spellingShingle Research Papers
Duchêne, Pascal
Humbert, Séverine
Sorbier, Loïc
Moreaud, Maxime
Small-angle X-ray scattering intensity of multiscale models of spheroids
title Small-angle X-ray scattering intensity of multiscale models of spheroids
title_full Small-angle X-ray scattering intensity of multiscale models of spheroids
title_fullStr Small-angle X-ray scattering intensity of multiscale models of spheroids
title_full_unstemmed Small-angle X-ray scattering intensity of multiscale models of spheroids
title_short Small-angle X-ray scattering intensity of multiscale models of spheroids
title_sort small-angle x-ray scattering intensity of multiscale models of spheroids
topic Research Papers
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9901919/
https://www.ncbi.nlm.nih.gov/pubmed/36777144
http://dx.doi.org/10.1107/S1600576722011359
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