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Platinum Ruthenium Catalysts Supported on Carbon Xerogel for Methanol Electro-Oxidation: Influence of the Catalyst Synthesis Method

Authors

  • Cinthia Alegre,

    1. Department of Energy and Environment, Institute of Carbochemistry/Instituto de Carboquímica, Consejo Superior de Investigaciones Científicas (ICB-CSIC), C/. Miguel Luesma Castán, 4. 50018, Zaragoza (Spain), Fax: (+34) 976-733-318
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  • Dr. María Elena Gálvez,

    1. Department of Energy and Environment, Institute of Carbochemistry/Instituto de Carboquímica, Consejo Superior de Investigaciones Científicas (ICB-CSIC), C/. Miguel Luesma Castán, 4. 50018, Zaragoza (Spain), Fax: (+34) 976-733-318
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  • Dr. Rafael Moliner,

    1. Department of Energy and Environment, Institute of Carbochemistry/Instituto de Carboquímica, Consejo Superior de Investigaciones Científicas (ICB-CSIC), C/. Miguel Luesma Castán, 4. 50018, Zaragoza (Spain), Fax: (+34) 976-733-318
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  • Dr. Vincenzo Baglio,

    Corresponding author
    1. Istituto di Tecnolologie Avanzate per l'Energia “Nicola Giordano”, Consiglio Nazionale delle Ricerche (CNR-ITAE), Salita Santa Lucia sopra Contesse, 5. 98126, Messina (Italy)
    • Vincenzo Baglio, Istituto di Tecnolologie Avanzate per l'Energia “Nicola Giordano”, Consiglio Nazionale delle Ricerche (CNR-ITAE), Salita Santa Lucia sopra Contesse, 5. 98126, Messina (Italy)

      María Jesús Lázaro, Department of Energy and Environment, Institute of Carbochemistry/Instituto de Carboquímica, Consejo Superior de Investigaciones Científicas (ICB-CSIC), C/. Miguel Luesma Castán, 4. 50018, Zaragoza (Spain), Fax: (+34) 976-733-318

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  • Dr. Alessandro Stassi,

    1. Istituto di Tecnolologie Avanzate per l'Energia “Nicola Giordano”, Consiglio Nazionale delle Ricerche (CNR-ITAE), Salita Santa Lucia sopra Contesse, 5. 98126, Messina (Italy)
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  • Dr. Antonino Salvatore Aricò,

    1. Istituto di Tecnolologie Avanzate per l'Energia “Nicola Giordano”, Consiglio Nazionale delle Ricerche (CNR-ITAE), Salita Santa Lucia sopra Contesse, 5. 98126, Messina (Italy)
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  • Dr. María Jesús Lázaro

    Corresponding author
    1. Department of Energy and Environment, Institute of Carbochemistry/Instituto de Carboquímica, Consejo Superior de Investigaciones Científicas (ICB-CSIC), C/. Miguel Luesma Castán, 4. 50018, Zaragoza (Spain), Fax: (+34) 976-733-318
    • Vincenzo Baglio, Istituto di Tecnolologie Avanzate per l'Energia “Nicola Giordano”, Consiglio Nazionale delle Ricerche (CNR-ITAE), Salita Santa Lucia sopra Contesse, 5. 98126, Messina (Italy)

      María Jesús Lázaro, Department of Energy and Environment, Institute of Carbochemistry/Instituto de Carboquímica, Consejo Superior de Investigaciones Científicas (ICB-CSIC), C/. Miguel Luesma Castán, 4. 50018, Zaragoza (Spain), Fax: (+34) 976-733-318

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Abstract

A high surface area, highly mesoporous carbon xerogel was synthesised and used as a support in the preparation of platinum–ruthenium catalysts by different synthetic routes. The platinum–ruthenium carbon xerogel catalysts were physico-chemically characterised and used for the chemical electro-oxidation of methanol. The synthetic routes pursued included: 1) impregnation with metal chloride precursors and reduction with two different reducing agents: sodium borohydride and formic acid; 2) a microemulsion-based method and 3) a sulfite complex method, which led to catalysts with different physico-chemical features that strongly influence their catalytic behaviour towards methanol oxidation. The electro-oxidation of methanol was found to depend on both the crystal size and the extent of active phase reduction as well as on the platinum concentration on the catalyst surface, which were maximised for the impregnation method and reduction with formic acid.

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