%0 Journal Article
%A Becher, Johannes
%A Weber, Sebastian
%A Ferreira Sanchez, Dario
%A Doronkin, Dmitry
%A Garrevoet, Jan
%A Falkenberg, Gerald
%A Motta Meira, Debora
%A Pascarelli, Sakura
%A Grunwaldt, Jan-Dierk
%A Sheppard, Thomas L.
%T Sample Environment for Operando Hard X-ray Tomography—An Enabling Technology for Multimodal Characterization in Heterogeneous Catalysis
%J Catalysts
%V 11
%N 4
%@ 2073-4344
%C Basel
%I MDPI
%M PUBDB-2021-02756
%P 459 (1-18)
%D 2021
%X Structure–activity relations in heterogeneous catalysis can be revealed through in situ and operando measurements of catalysts in their active state. While hard X-ray tomography is an ideal method for non-invasive, multimodal 3D structural characterization on the micron to nm scale, performing tomography under controlled gas and temperature conditions is challenging. Here, we present a flexible sample environment for operando hard X-ray tomography at synchrotron radiation sources. The setup features are discussed, with demonstrations of operando powder X-ray diffraction tomography (XRD-CT) and energy-dispersive tomographic X-ray absorption spectroscopy (ED-XAS-CT). Catalysts for CO<sub>2</sub> methanation and partial oxidation of methane are shown as case studies. The setup can be adapted for different hard X-ray microscopy, spectroscopy, or scattering synchrotron radiation beamlines, is compatible with absorption, diffraction, fluorescence, and phase-contrast imaging, and can operate with scanning focused beam or full-field acquisition mode. We present an accessible methodology for operando hard X-ray tomography studies, which offer a unique source of 3D spatially resolved characterization data unavailable to contemporary methods.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000642878200001
%R 10.3390/catal11040459
%U https://bib-pubdb1.desy.de/record/459810