Thermal and photo-induced oxidation of CH2 on Cu(100)

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The oxidation of the CH2 species produced by thermal and photo-induced dissociation of CH2I2 has been followed by X-ray and ultraviolet photoelectron spectroscopies and temperature programmed spectroscopy. Preadsorbed oxygen atoms hindered the thermal dissociation of CH2I2. The dominant pathway of CH2 formed above 200 K is its coupling into C2H4, which interacted with adsorbed O atoms. Formaldehyde formation was not observed. However, CH2 produced by illumination of adsorbed CH2I2 at ~ 100 K combined with adsorbed O to give CH2O.

Original languageEnglish
Pages (from-to)31-38
Number of pages8
JournalJournal of Molecular Catalysis A: Chemical
Volume141
Issue number1-3
DOIs
Publication statusPublished - May 6 1999

Fingerprint

thermal dissociation
ultraviolet spectroscopy
formaldehyde
oxygen atoms
illumination
photoelectron spectroscopy
dissociation
Ultraviolet photoelectron spectroscopy
Atoms
Oxidation
oxidation
Formaldehyde
spectroscopy
atoms
x rays
X ray photoelectron spectroscopy
Lighting
Spectroscopy
Oxygen
temperature

Keywords

  • CH
  • Cu(100)
  • Thermal oxidation

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

Cite this

Thermal and photo-induced oxidation of CH2 on Cu(100). / Kovács, I.; Solymosi, F.

In: Journal of Molecular Catalysis A: Chemical, Vol. 141, No. 1-3, 06.05.1999, p. 31-38.

Research output: Contribution to journalArticle

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AB - The oxidation of the CH2 species produced by thermal and photo-induced dissociation of CH2I2 has been followed by X-ray and ultraviolet photoelectron spectroscopies and temperature programmed spectroscopy. Preadsorbed oxygen atoms hindered the thermal dissociation of CH2I2. The dominant pathway of CH2 formed above 200 K is its coupling into C2H4, which interacted with adsorbed O atoms. Formaldehyde formation was not observed. However, CH2 produced by illumination of adsorbed CH2I2 at ~ 100 K combined with adsorbed O to give CH2O.

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