The Mechanism of Hydrocarbon Oxygenate Reforming: C[BOND]C Bond Scission, Carbon Formation, and Noble-Metal-Free Oxide Catalysts

Authors

  • Dr. Yaroslava Lykhach,

    Corresponding author
    1. Lehrstuhl für Physikalische Chemie II, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstrasse 3, 91058 Erlangen (Germany), Fax: (+49) 9131-8528867 http://www.chemie.uni-erlangen.de/libuda
    • Lehrstuhl für Physikalische Chemie II, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstrasse 3, 91058 Erlangen (Germany), Fax: (+49) 9131-8528867 http://www.chemie.uni-erlangen.de/libuda

    Search for more papers by this author
  • Armin Neitzel,

    1. Lehrstuhl für Physikalische Chemie II, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstrasse 3, 91058 Erlangen (Germany), Fax: (+49) 9131-8528867 http://www.chemie.uni-erlangen.de/libuda
    Search for more papers by this author
  • Klára Ševčíková,

    1. Charles University, Department of Surface and Plasma Science, V Holešovičkách 2, 18000 Prague (Czech Republic)
    Search for more papers by this author
  • Dr. Viktor Johánek,

    1. Charles University, Department of Surface and Plasma Science, V Holešovičkách 2, 18000 Prague (Czech Republic)
    Search for more papers by this author
  • Dr. Nataliya Tsud,

    1. Charles University, Department of Surface and Plasma Science, V Holešovičkách 2, 18000 Prague (Czech Republic)
    Search for more papers by this author
  • Dr. Tomáš Skála,

    1. Charles University, Department of Surface and Plasma Science, V Holešovičkách 2, 18000 Prague (Czech Republic)
    Search for more papers by this author
  • Dr. Kevin C. Prince,

    1. Sincrotrone Trieste SCpA, Strada Statale 14, km 163.5, 34149 Basovizza-Trieste (Italy)
    2. IOM, Strada Statale 14, km 163.5, 34149 Basovizza-Trieste (Italy)
    Search for more papers by this author
  • Prof. Dr. Vladimír Matolín,

    1. Charles University, Department of Surface and Plasma Science, V Holešovičkách 2, 18000 Prague (Czech Republic)
    Search for more papers by this author
  • Prof. Dr. Jörg Libuda

    Corresponding author
    1. Lehrstuhl für Physikalische Chemie II, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstrasse 3, 91058 Erlangen (Germany), Fax: (+49) 9131-8528867 http://www.chemie.uni-erlangen.de/libuda
    2. Erlangen Catalysis Resource Center, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstrasse 3, 91058 Erlangen (Germany)
    • Lehrstuhl für Physikalische Chemie II, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstrasse 3, 91058 Erlangen (Germany), Fax: (+49) 9131-8528867 http://www.chemie.uni-erlangen.de/libuda

    Search for more papers by this author

Abstract

Towards a molecular understanding of the mechanism behind catalytic reforming of bioderived hydrocarbon oxygenates, we explore the C[BOND]C bond scission of C2 model compounds (acetic acid, ethanol, ethylene glycol) on ceria model catalysts of different complexity, with and without platinum. Synchrotron photoelectron spectroscopy reveals that the reaction pathway depends very specifically on both the reactant molecule and the catalyst surface. Whereas C[BOND]C bond scission on Pt sites and on oxygen vacancies involves intermittent surface carbon species, the reaction occurs without any carbon formation and deposition for ethylene glycol on CeO2(111).

Ancillary