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Synthesis of Platinum–Ruthenium Nanoparticles under Supercritical CO2 and their Confinement in Carbon Nanotubes: Hydrogenation Applications

Authors

  • Dr. Eva Castillejos,

    1. Université de Toulouse, UPS, INP, LCC, LCC, UPR 8241, composante ENSIACET, 4, Allée Emile Monso, BP 44362, 31030 Toulouse Cedex 4 (France), Fax: (+33) 534323596
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  • Dr. Mohamad Jahjah,

    1. Université de Toulouse, UPS, LHFA, 118 route de Narbonne, F-31062 Toulouse Cedex 9 (France)
    2. CNRS, LHFA UMR 5069, F-31062 Toulouse Cedex 9 (France), Fax: (+33) 561558204
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  • Dr. Isabelle Favier,

    1. Université de Toulouse, UPS, LHFA, 118 route de Narbonne, F-31062 Toulouse Cedex 9 (France)
    2. CNRS, LHFA UMR 5069, F-31062 Toulouse Cedex 9 (France), Fax: (+33) 561558204
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  • Dr. Arantxa Orejón,

    1. Departament de Química Física i Inorgànica, Universitat Rovira i Virgili, Marcel.lí Domingo s/n, 43007 Tarragona (Spain)
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    • Deceased, January 10, 2011.

  • Christian Pradel,

    1. Université de Toulouse, UPS, LHFA, 118 route de Narbonne, F-31062 Toulouse Cedex 9 (France)
    2. CNRS, LHFA UMR 5069, F-31062 Toulouse Cedex 9 (France), Fax: (+33) 561558204
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  • Dr. Emmanuelle Teuma,

    1. Université de Toulouse, UPS, LHFA, 118 route de Narbonne, F-31062 Toulouse Cedex 9 (France)
    2. CNRS, LHFA UMR 5069, F-31062 Toulouse Cedex 9 (France), Fax: (+33) 561558204
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  • Dr. Anna M. Masdeu-Bultó,

    1. Departament de Química Física i Inorgànica, Universitat Rovira i Virgili, Marcel.lí Domingo s/n, 43007 Tarragona (Spain)
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  • Prof. Philippe Serp,

    Corresponding author
    1. Université de Toulouse, UPS, INP, LCC, LCC, UPR 8241, composante ENSIACET, 4, Allée Emile Monso, BP 44362, 31030 Toulouse Cedex 4 (France), Fax: (+33) 534323596
    • Université de Toulouse, UPS, INP, LCC, LCC, UPR 8241, composante ENSIACET, 4, Allée Emile Monso, BP 44362, 31030 Toulouse Cedex 4 (France), Fax: (+33) 534323596
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  • Prof. Montserrat Gómez

    Corresponding author
    1. Université de Toulouse, UPS, LHFA, 118 route de Narbonne, F-31062 Toulouse Cedex 9 (France)
    2. CNRS, LHFA UMR 5069, F-31062 Toulouse Cedex 9 (France), Fax: (+33) 561558204
    • Université de Toulouse, UPS, LHFA, 118 route de Narbonne, F-31062 Toulouse Cedex 9 (France)
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Abstract

Bimetallic platinum–ruthenium nanoparticles stabilised by pyridine- and monophosphine-based ligands were prepared either in supercritical CO2 or in THF. TEM analyses evidenced a tendency of the nanoparticles prepared in supercritical CO2 to agglomerate. Both types of bimetallic nanoparticles were further confined into functionalised multiwalled carbon nanotubes. Upon confinement, PtRu nanoparticles stabilised by phosphine ligands appeared more agglomerated than those stabilised by the pyridine ligand. These materials were applied to cinnamaldehyde hydrogenation. Confined PtRu nanoparticles showed higher catalytic activity and selectivity than unsupported nanoparticles.

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