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Catalytic reactor for operando spatially resolved structure–activity profiling using high-energy X-ray diffraction
Citation Link: https://doi.org/10.15480/882.5166
Publikationstyp
Journal Article
Date Issued
2023-04-12
Sprache
English
Institut
TORE-DOI
Journal
Volume
30
Issue
3
Start Page
571
End Page
581
Citation
Journal of Synchrotron Radiation 30 (3): 571-581 (2023-04-12)
Publisher DOI
Scopus ID
PubMed ID
37042662
Publisher
Blackwell Publ.
In heterogeneous catalysis, operando measurements probe catalysts in their active state and are essential for revealing complex catalyst structure–activity relationships. The development of appropriate operando sample environments for spatially resolved studies has come strongly into focus in recent years, particularly when coupled to the powerful and multimodal characterization tools available at synchrotron light sources. However, most catalysis studies at synchrotron facilities only measure structural information about the catalyst in a spatially resolved manner, whereas gas analysis is restricted to the reactor outlet. Here, a fully automated and integrated catalytic profile reactor setup is shown for the combined measurement of temperature, gas composition and high-energy X-ray diffraction (XRD) profiles, using the oxidative dehydrogenation of C2H6 to C2H4 over MoO3/γ-Al2O3 as a test system. The profile reactor methodology was previously developed for X-ray absorption spectroscopy and is here extended for operando XRD. The profile reactor is a versatile and accessible research tool for combined spatially resolved structure–activity profiling, enabling the use of multiple synchrotron-based characterization methods to promote a knowledge-based optimization of a wide range of catalytic systems in a time- and resource-efficient way.
Subjects
catalytic reactors
heterogeneous catalysis
operando profile measurements
structure–activity relationships
DDC Class
660: Technische Chemie
Funding Organisations
Publication version
publishedVersion
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