Ethanol decomposition: C-C cleavage selectivity on Rh(111) (Articolo in rivista)

Type
Label
  • Ethanol decomposition: C-C cleavage selectivity on Rh(111) (Articolo in rivista) (literal)
Anno
  • 2004-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1002/cphc.200400043 (literal)
Alternative label
  • Vesselli, E (1,2); Baraldi, A (1,2); Comelli, G (1,2); Lizzit, S (3); Rosei, R (1,2) (2004)
    Ethanol decomposition: C-C cleavage selectivity on Rh(111)
    in ChemPhysChem (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Vesselli, E (1,2); Baraldi, A (1,2); Comelli, G (1,2); Lizzit, S (3); Rosei, R (1,2) (literal)
Pagina inizio
  • 1133 (literal)
Pagina fine
  • 1140 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 5 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 8 (literal)
Note
  • ISI Web of Science (WOS) (literal)
  • Scopus (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • (1) Laboratorio Nazionale TASC-INFM, Area Science Park, S.S. 14 km 163.5, 34012 Basovizza/Trieste (Italy); (2) Physics Department-Center of Excellence for Nanostructured Materials, Università degli Studi di Trieste, via A. Valerio 2, 34127 Trieste (Italy); (3) Sincrotrone Trieste S.C.p.A., S.S. 14 km 163.5, 34012 Basovizza/Trieste (Italy) (literal)
Titolo
  • Ethanol decomposition: C-C cleavage selectivity on Rh(111) (literal)
Abstract
  • Ethanol adsorption, desorption and decomposition on Rh(111) have been studied by X-ray photelectron spectroscopy and temperature-programmed desorption experiments. The evaluation of the C 1s and O 1s core level spectra was monitored as a function of ethanol exposure and surface temperature. Ethanol adsorption at 90 K results in two nonequivalent ethanol-adsorbed species at low surface coverage, while a third species-related to multilayer formation-appears after longer exposures. Upon surface annealing, ethanol undergoes both desorption and dissociation, thus creating intermediate surface species which further decompose to hydrogen, carbon monoxide and atomic carbon. Our results clearly show that C-C bond cleavage is the preferential dissociation channel, while C-O bond scission is not observed. Calculations performed within the framework of the unity bond index-quadratic exponent potential model, have been used to test, and compare different competing dissociation channels, providing an estimate of adsorption energies and dissociation barriers. (literal)
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