Cargando…
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...
Autores principales: | , , , |
---|---|
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 |
_version_ | 1784883127251894272 |
---|---|
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. |
format | Online Article Text |
id | pubmed-9901919 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | International Union of Crystallography |
record_format | MEDLINE/PubMed |
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 |
work_keys_str_mv | AT duchenepascal smallanglexrayscatteringintensityofmultiscalemodelsofspheroids AT humbertseverine smallanglexrayscatteringintensityofmultiscalemodelsofspheroids AT sorbierloic smallanglexrayscatteringintensityofmultiscalemodelsofspheroids AT moreaudmaxime smallanglexrayscatteringintensityofmultiscalemodelsofspheroids |