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Room-temperature carbon monoxide oxidation by oxygen over Pt/Al2O3 mediated by reactive platinum carbonates

Author

Listed:
  • Mark A. Newton

    (University of Warwick)

  • Davide Ferri

    (Paul Scherrer Institut)

  • Grigory Smolentsev

    (Paul Scherrer Institut)

  • Valentina Marchionni

    (Paul Scherrer Institut)

  • Maarten Nachtegaal

    (Paul Scherrer Institut)

Abstract

Room-temperature carbon monoxide oxidation, important for maintaining clean air among other applications, is challenging even after a century of research into carbon monoxide oxidation. Here we report using time-resolved diffuse reflectance infrared spectroscopy, X-ray absorption fine structure spectroscopy and mass spectrometry a platinum carbonate-mediated mechanism for the room-temperature oxidation of carbon monoxide. By applying a periodic reduction–oxidation mode of operation we further show that this behaviour is reversible and can be formed into a catalytic cycle that requires molecular communication between metallic platinum nanoparticles and highly dispersed oxidic platinum centres. A new possibility for the attainment of low-temperature oxidation of carbon monoxide is therefore demonstrated.

Suggested Citation

  • Mark A. Newton & Davide Ferri & Grigory Smolentsev & Valentina Marchionni & Maarten Nachtegaal, 2015. "Room-temperature carbon monoxide oxidation by oxygen over Pt/Al2O3 mediated by reactive platinum carbonates," Nature Communications, Nature, vol. 6(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms9675
    DOI: 10.1038/ncomms9675
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    Cited by:

    1. Taek-Seung Kim & Christopher R. O’Connor & Christian Reece, 2024. "Interrogating site dependent kinetics over SiO2-supported Pt nanoparticles," Nature Communications, Nature, vol. 15(1), pages 1-12, December.

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