Catalytic reactor for operando spatially resolved structure–activity profiling using high‐energy X‐ray diffraction

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

heterogeneous catalysis

operando profile measurements

structure–activity relationships

catalytic reactors

DDC Class

660: Chemistry; Chemical Engineering

600: Technology

Funding Organisations

Federal Ministry of Education and Research (BMBF)

Publication version

publishedVersion

Lizenz

https://creativecommons.org/licenses/by/4.0/

Name

JSY2_JSY2YE5030.pdf

Size

1.37 MB

Format

Adobe PDF

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Catalytic reactor for operando spatially resolved structure–activity profiling using high‐energy X‐ray diffraction