2026-04-19T19:18:05Zhttps://recercat.cat/oai/request

oai:recercat.cat:2117/891992026-01-21T06:03:11Zcom_2072_1033col_2072_452950

Magnetite-supported palladium single-atoms do not catalyse the hydrogenation of alkenes but small clusters do Rosell, Marta D. Caparrós, Francisco J. Angurell Purroy, Inmaculada Müller Jevenois, Guillermo Llorca Piqué, Jordi Seco García, Miquel Angel Rosell, Oriol Universitat Politècnica de Catalunya. Institut de Tècniques Energètiques Universitat Politècnica de Catalunya. NEMEN - Nanoenginyeria de materials aplicats a l'energia Àrees temàtiques de la UPC::Enginyeria dels materials::Materials funcionals::Materials magnètics Àrees temàtiques de la UPC::Enginyeria química::Química orgànica::Compostos orgànics Catalysts Magnetic materials Cross-coupling reactions CO Oxidation General-approach Pd catalysts Iron-oxide Nanoparticles Gold Size Catalitzadors Materials magnètics The activity of supported noble metal catalysts strongly depends on the particle size. The ultimate small-size limit is the single-atom catalyst (SAC), which maximizes the catalytic efficiency in the majority of the examples. Here, we investigate the catalytic behavior of Pd SACs supported on magnetite nanoparticles and we unambiguously demonstrate that Pd SACs are absolutely inactive in the hydrogenation of various alkene substrates. Instead, Pd clusters of low atomicity exhibit outstanding catalytic performance. Postprint (author's final draft) 2016-01-01 Article Rosell, M., Caparrós, F., Angurell, I., Müller, G., Llorca, J., Seco, M., Rosell, O. Magnetite-supported palladium single-atoms do not catalyse the hydrogenation of alkenes but small clusters do. "Catalysis science and technology", 1 Gener 2016, vol. 6, p. 4081-4085. 2044-4761 https://hdl.handle.net/2117/89199 10.1039/c6cy00596a eng http://pubs.rsc.org/en/Content/ArticleLanding/2016/CY/C6CY00596A#!divAbstract http://creativecommons.org/licenses/by-nc-nd/3.0/es/ Open Access 5 p. application/pdf