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X‐ray Excited Optical Fluorescence and Diffraction Imaging of Reactivity and Crystallinity in a Zeolite Crystal: Crystallography and Molecular Spectroscopy in One

Structure–activity relationships in heterogeneous catalysis are challenging to be measured on a single‐particle level. For the first time, one X‐ray beam is used to determine the crystallographic structure and reactivity of a single zeolite crystal. The method generates μm‐resolved X‐ray diffraction...

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Autores principales: Ristanović, Zoran, Hofmann, Jan P., Richard, Marie‐Ingrid, Jiang, Tao, Chahine, Gilbert A., Schülli, Tobias U., Meirer, Florian, Weckhuysen, Bert M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4950320/
https://www.ncbi.nlm.nih.gov/pubmed/27145171
http://dx.doi.org/10.1002/anie.201601796
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author Ristanović, Zoran
Hofmann, Jan P.
Richard, Marie‐Ingrid
Jiang, Tao
Chahine, Gilbert A.
Schülli, Tobias U.
Meirer, Florian
Weckhuysen, Bert M.
author_facet Ristanović, Zoran
Hofmann, Jan P.
Richard, Marie‐Ingrid
Jiang, Tao
Chahine, Gilbert A.
Schülli, Tobias U.
Meirer, Florian
Weckhuysen, Bert M.
author_sort Ristanović, Zoran
collection PubMed
description Structure–activity relationships in heterogeneous catalysis are challenging to be measured on a single‐particle level. For the first time, one X‐ray beam is used to determine the crystallographic structure and reactivity of a single zeolite crystal. The method generates μm‐resolved X‐ray diffraction (μ‐XRD) and X‐ray excited optical fluorescence (μ‐XEOF) maps of the crystallinity and Brønsted reactivity of a zeolite crystal previously reacted with a styrene probe molecule. The local gradients in chemical reactivity (derived from μ‐XEOF) were correlated with local crystallinity and framework Al content, determined by μ‐XRD. Two distinctly different types of fluorescent species formed selectively, depending on the local zeolite crystallinity. The results illustrate the potential of this approach to resolve the crystallographic structure of a porous material and its reactivity in one experiment via X‐ray induced fluorescence of organic molecules formed at the reactive centers.
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spelling pubmed-49503202016-07-28 X‐ray Excited Optical Fluorescence and Diffraction Imaging of Reactivity and Crystallinity in a Zeolite Crystal: Crystallography and Molecular Spectroscopy in One Ristanović, Zoran Hofmann, Jan P. Richard, Marie‐Ingrid Jiang, Tao Chahine, Gilbert A. Schülli, Tobias U. Meirer, Florian Weckhuysen, Bert M. Angew Chem Int Ed Engl Communications Structure–activity relationships in heterogeneous catalysis are challenging to be measured on a single‐particle level. For the first time, one X‐ray beam is used to determine the crystallographic structure and reactivity of a single zeolite crystal. The method generates μm‐resolved X‐ray diffraction (μ‐XRD) and X‐ray excited optical fluorescence (μ‐XEOF) maps of the crystallinity and Brønsted reactivity of a zeolite crystal previously reacted with a styrene probe molecule. The local gradients in chemical reactivity (derived from μ‐XEOF) were correlated with local crystallinity and framework Al content, determined by μ‐XRD. Two distinctly different types of fluorescent species formed selectively, depending on the local zeolite crystallinity. The results illustrate the potential of this approach to resolve the crystallographic structure of a porous material and its reactivity in one experiment via X‐ray induced fluorescence of organic molecules formed at the reactive centers. John Wiley and Sons Inc. 2016-05-04 2016-06-20 /pmc/articles/PMC4950320/ /pubmed/27145171 http://dx.doi.org/10.1002/anie.201601796 Text en © 2016 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA. This is an open access article under the terms of the Creative Commons Attribution (http://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Communications
Ristanović, Zoran
Hofmann, Jan P.
Richard, Marie‐Ingrid
Jiang, Tao
Chahine, Gilbert A.
Schülli, Tobias U.
Meirer, Florian
Weckhuysen, Bert M.
X‐ray Excited Optical Fluorescence and Diffraction Imaging of Reactivity and Crystallinity in a Zeolite Crystal: Crystallography and Molecular Spectroscopy in One
title X‐ray Excited Optical Fluorescence and Diffraction Imaging of Reactivity and Crystallinity in a Zeolite Crystal: Crystallography and Molecular Spectroscopy in One
title_full X‐ray Excited Optical Fluorescence and Diffraction Imaging of Reactivity and Crystallinity in a Zeolite Crystal: Crystallography and Molecular Spectroscopy in One
title_fullStr X‐ray Excited Optical Fluorescence and Diffraction Imaging of Reactivity and Crystallinity in a Zeolite Crystal: Crystallography and Molecular Spectroscopy in One
title_full_unstemmed X‐ray Excited Optical Fluorescence and Diffraction Imaging of Reactivity and Crystallinity in a Zeolite Crystal: Crystallography and Molecular Spectroscopy in One
title_short X‐ray Excited Optical Fluorescence and Diffraction Imaging of Reactivity and Crystallinity in a Zeolite Crystal: Crystallography and Molecular Spectroscopy in One
title_sort x‐ray excited optical fluorescence and diffraction imaging of reactivity and crystallinity in a zeolite crystal: crystallography and molecular spectroscopy in one
topic Communications
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4950320/
https://www.ncbi.nlm.nih.gov/pubmed/27145171
http://dx.doi.org/10.1002/anie.201601796
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