Reactivity of Cr species grafted on SiO2/Si(100) surface: A reflection extended X-ray absorption fine structure study down to the submonolayer regime (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• Reactivity of Cr species grafted on SiO2/Si(100) surface: A reflection extended X-ray absorption fine structure study down to the submonolayer regime (Articolo in rivista) (literal)

Anno

• 2007-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1021/jp074066t (literal)

Alternative label

• Agostini, G; Groppo, E; Bordiga, S; Zecchina, A; Prestipino, C; D'Acapito, F; van Kimmenade, E; Thune, PC; Niemantsverdriet, JW; Lamberti, C (2007)
  Reactivity of Cr species grafted on SiO2/Si(100) surface: A reflection extended X-ray absorption fine structure study down to the submonolayer regime
  in Journal of physical chemistry. C
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Agostini, G; Groppo, E; Bordiga, S; Zecchina, A; Prestipino, C; D'Acapito, F; van Kimmenade, E; Thune, PC; Niemantsverdriet, JW; Lamberti, C (literal)

Pagina inizio

• 16437 (literal)

Pagina fine

• 16444 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 111 (literal)

Rivista

• Journal of physical chemistry. C (Rivista)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• Univ Turin, Dept Inorgan Phys & Mat Chem, I-10125 Turin, Italy; Univ Turin, NIS Ctr Excellence, I-10125 Turin, Italy; ESRF, F-38043 Grenoble, France; ESRF, OGG, INFM, CNR, F-38043 Grenoble, France; Eindhoven Univ Technol, Schuit Inst Catalysis, NL-5600 MB Eindhoven, Netherlands (literal)

Titolo

• Reactivity of Cr species grafted on SiO2/Si(100) surface: A reflection extended X-ray absorption fine structure study down to the submonolayer regime (literal)

Abstract

• In situ X-ray absorption near-edge spectroscopy/extended X-ray absorption fine structure (XANES/EXAFS) experiments are conducted. for the first time on a highly diluted Cr/SiO2/Si(100) system (2 Cr/nm(2), representing a model of the Phillips catalyst for the ethylene polymerization) by exploiting the reflection EXAFS (ReflEXAFS) geometry. This experiment, aimed to give a contribution in bridging the gap between surface science and catalysis, demonstrates that it is possible to follow the reversible red-ox reactivity of surface species grafted on a single well-defined surface, at a concentration limit that is far below the monolayer coverage level and for a highly sensitive sample. A further improvement on the impurity level of the ReflEXAFS chamber is however required in order to be able to follow in situ the polymerization reaction. Our results demonstrate that the red-ox ability of the isolated surface Cr species is not enough to make a polymerization active species. (literal)

Prodotto di

• Sviluppo di strumentazione e di metodologie sperimentali avanzate per lo studio delle proprieta strutturali dei materiali con raggi X da sincrotrone (MD.P04.007.001) (Modulo)

Autore CNR

• FRANCESCO D'ACAPITO (Persona)

Insieme di parole chiave

• Parole chiave di "Reactivity of Cr species grafted on SiO2/Si(100) surface: A reflection extended X-ray absorption fine structure study down to the submonolayer regime" (Insieme di parole chiave)

Incoming links:

Autore CNR di

• FRANCESCO D'ACAPITO (Persona)

Prodotto

• Sviluppo di strumentazione e di metodologie sperimentali avanzate per lo studio delle proprieta strutturali dei materiali con raggi X da sincrotrone (MD.P04.007.001) (Modulo)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Journal of physical chemistry. C (Rivista)

Insieme di parole chiave di

• Parole chiave di "Reactivity of Cr species grafted on SiO2/Si(100) surface: A reflection extended X-ray absorption fine structure study down to the submonolayer regime" (Insieme di parole chiave)