title: The mechanism of hydrocarbon oxygenate reforming: C-C bond scission, carbon formation, and noble-metal-free oxide catalysts.
abstract: Towards a molecular understanding of the mechanism behind catalytic reforming of bioderived hydrocarbon oxygenates, we explore the C-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-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).
authors.affiliation: 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. yaroslava.lykhach@fau.de.
authors.forename: Yaroslava
authors.initials: Y
authors.lastname: Lykhach
authors.forename: Armin
authors.initials: A
authors.lastname: Neitzel
authors.forename: Klára
authors.initials: K
authors.lastname: Ševčíková
authors.forename: Viktor
authors.initials: V
authors.lastname: Johánek
authors.forename: Nataliya
authors.initials: N
authors.lastname: Tsud
authors.forename: Tomáš
authors.initials: T
authors.lastname: Skála
authors.forename: Kevin C
authors.initials: KC
authors.lastname: Prince
authors.forename: Vladimír
authors.initials: V
authors.lastname: Matolín
authors.forename: Jörg
authors.initials: J
authors.lastname: Libuda
mesh_terms: D019342:Acetic Acid / Q000737:chemistry*; D002244:Carbon / Q000737:chemistry; D002384:Catalysis; D002563:Cerium / Q000737:chemistry*; D000431:Ethanol / Q000737:chemistry*; D019855:Ethylene Glycol / Q000737:chemistry*; D010984:Platinum / Q000737:chemistry*
chemical_list: D002563:Cerium; D000431:Ethanol; D010984:Platinum; C030583:ceric oxide; D002244:Carbon; D019855:Ethylene Glycol; D019342:Acetic Acid
keywords: catalytic reforming; ceria; heterogeneous catalysis; photoelectron spectroscopy; platinum