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DTSTART;TZID=Europe/Paris:20241120T080000
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DTSTAMP:20260421T145343
CREATED:20240801T160617Z
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UID:10000051-1732089600-1732294800@remade-project.eu
SUMMARY:Energy Materials in Circular Economy Meet X-rays & Neutrons
DESCRIPTION:We are excited to announce the “Energy Materials in Circular Economy Meet X-rays & Neutrons” event\, organized by ReMade@ARI.\nThe conference will take place from 20th to the 22nd November 2024 at the ESRF in Grenoble\, France. \nThis event is organized jointly by the ESRF\, ILL\, and PSI\, and aims to bring together users of research infrastructure facilities with circular materials researchers curious about the advanced techniques available for characterisation of energy materials at the three host facilities. \nYou can expect presentations on cutting-edge development in the field of energy materials: \n\nfrom harvesting (e.g.\, solar panels)\nto storing (e.g.\, batteries and fuel cells)\nand conversion (e.g.\, electrolysers and catalysis processes)\,\n\nwith examples of research within the circular economy. \n  \nAbstract submission deadline: 1st of September.\nRegistration deadline: 15thof October
URL:https://remade-project.eu/index.php/event/energy-materials-in-circular-economy-meet-x-rays-neutrons/
LOCATION:EPN science campus\, 71 avenue des martyrs\, Grenoble\, 38000\, France
CATEGORIES:Workshop
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CREATED:20240613T111535Z
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UID:10000049-1732269600-1732273200@remade-project.eu
SUMMARY:Exploring catalytic reactions from the ensemble average to the single particle limit using X-rays and scanning probe microscopy
DESCRIPTION:Zoom webinar\n  \nAndreas Stierle\, \nDeutsches Elektronen Synchrotron DESY and Universität Hamburg \nOxide supported metal nanoparticles play a crucial role as heterogeneous catalysts for many reactions. In conventional x-ray diffraction (XRD) experiments on powder samples the structural analysis is hampered by a random nanoparticle orientation and often by background scattering from the supporting material. We have therefore investigated epitaxial metal nanoparticles on single crystal oxide supports\, which are stable under ambient pressure catalytic reaction conditions. The surface sensitive x-ray diffraction experiments deliver quantitative information on the nanoparticle size\, shape and facet surface structures under near ambient pressure operando CO oxidation conditions [1\,2]. We have identified active phases for CO oxidation at PtRh nanoparticle surface facets and reaction induced nanoparticle shape transformations. To bridge the gap to powder catalyst material\, we have performed operando single nanoparticle diffraction imaging experiments allow the surface composition determination under reaction conditions [3]. \n  \n[1] U. Hejral\, P. Müller\, O. Balmes\, D. Pontoni\, A. Stierle\, (2016): Tracking the shape-dependent sintering of platinum-rhodium model catalysts under operando conditions. Nat. Comm. 7\, p. 10964. DOI: 10.1038/ncomms10964.\n[2] U. Hejral\, D. Franz\, S. Volkov\, S. Francoual\, J. Strempfer\, A. Stierle\, (2018): Identification of a Catalytically Highly Active Surface Phase for CO Oxidation over PtRh Nanoparticles under Operando Reaction Conditions. In Phys. Rev. Lett. 120 (12)\, p. 126101. DOI: 10.1103/PhysRevLett.120.126101.\n[3] Y. Y. Kim\, T. F. Keller\, T. J. Goncalves\, M. Abuin\, H. Runge\, L. Gelisio J. Carnis\, V. Vonk\, P. N. Plessow\, I. A. Vartaniants\, A. Stierle (2021): Single alloy nanoparticle x-ray imaging during a catalytic reaction. In Science Advances 7. DOI: 10.18419/OPUS-6697.
URL:https://remade-project.eu/index.php/event/exploring-catalytic-reactions-from-the-ensemble-average-to-the-single-particle-limit-using-x-rays-and-scanning-probe-microscopy/
CATEGORIES:Seminar
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