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Real-time tomographic diffraction imaging of catalytic membrane reactors for the oxidative coupling of methane

DOI: 10.1016/j.cattod.2020.05.045 DOI Help

Authors: Antonios Vamvakeros (University College London; Research Complex at Harwell; Finden Limited) , Dorota Matras (Research Complex at Harwell; University of Manchester; Finden Limited) , Simon D. M. Jacques (Finden Limited) , Marco Di Michiel (ESRF- The European Synchrotron) , Vesna Middelkoop (Flemish Institute for Technological Research) , Peixi Cong (University College London; Research Complex at Harwell) , Stephen W. T. Price (Finden Limited) , Craig Bull (ISIS Neutron and Muon Source) , Pierre Senecal (University College London; Research Complex at Harwell) , Andrew Beale (University College London; Research Complex at Harwell; Finden Limited)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Catalysis Today

State: Published (Approved)
Published: May 2020

Abstract: Catalytic membrane reactors have the potential to render the process of oxidative coupling of methane economically viable. Here, the results from operando XRD-CT studies of three different catalytic membrane reactors, employing BaCo0.4Fe0.4Zr0.2O3-δ (BCFZ) and La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) perovskite membranes with Mn-Na-W/SiO2 and La-promoted Mn-Na-W/SiO2 catalysts, are presented. It is shown that synchrotron X-ray tomographic diffraction imaging allows the extraction of spatially-resolved diffraction information from the interior of these working catalytic membrane reactors and makes it possible to capture the evolving solid-state chemistry of their components under various operating conditions (i.e. temperature and chemical environment).

Journal Keywords: Membrane; Tomography; Operando; XRD; LSCF; BCFZ

Subject Areas: Chemistry


Instruments: B18-Core EXAFS

Other Facilities: ESRF