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Mechanochemical Synthesis of Supported Bimetallic Catalysts

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de Bellis,  Jacopo
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Felderhoff,  Michael
Research Group Felderhoff, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Schüth,  Ferdi
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Citation

de Bellis, J., Felderhoff, M., & Schüth, F. (2021). Mechanochemical Synthesis of Supported Bimetallic Catalysts. Chemistry of Materials, 33(6), 2037-2045. doi:10.1021/acs.chemmater.0c04134.


Cite as: http://hdl.handle.net/21.11116/0000-0008-901F-3
Abstract
In a previous publication, ball milling was introduced as an effective method for the preparation of supported metal catalysts, simply from the coarse powders of the metal and metal oxide support. In this follow-up study, we demonstrate that mixing multiple metal sources can result in supported alloyed nanoparticles, extending the field of application of the method to the synthesis of supported bimetallic catalysts. Ball milling Au and Pd or Au and Cu in a high-energy regime (shaker mill) indeed led to the formation of Au–Pd and Au–Cu nanoparticles, supported on MgO or yttria-stabilized zirconia (YSZ), which were explored as model systems. Powder X-ray diffraction and electron microscopy were the primary means to investigate as-synthesized materials. The catalytic performance in CO oxidation was also investigated to understand better how the synthetic method could affect the features of the final materials as catalysts.