Interaction of CH₄, CH₃Cl, CH₂CI₂, and CCl₄ with O-terminated FeO(111)
Journal Article
·
· Journal of Physical Chemistry B, 108(11):3644-3650
Well-ordered FeO(111) thin films are epitaxially grown on a Pt(111) substrate. A series of molecules including CH₄, CH₃Cl, CH₂Cl₂, CHCl₃, and CCl₄ are used as probes to test the chemical reactivity of the FeO(111) surface. The temperature programmed desorption spectra show no evidence of dissociative adsorption or chemical reaction between the substrate and the adsorbates. The desorption kinetics studies reveal that all the molecules are physisorbed and have desorption kinetics with an order between 0 and 1. Kinetic analysis is conducted, assuming both zero and first order desorption, and shows that an uncertainty in the desorption order introduces an error in determination of the terrace site desorption energies (θ = 0.5 ML) of only ~ 2%. The desorption energies for the series of molecules increase with the number of chlorine atoms in the molecule. The increase of desorption energies is not linear with the molecular polarizability and the deviations from linearity are attributed to the permanent dipole in some of the molecules. We conclude that the oxygen terminated FeO(111) surface is in general unreactive toward both C-H and C-Cl bonds.
- Research Organization:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 15007490
- Report Number(s):
- PNNL-SA-39787; 2573; 6500; 2573b; 2573a; KC0302020
- Journal Information:
- Journal of Physical Chemistry B, 108(11):3644-3650, Journal Name: Journal of Physical Chemistry B, 108(11):3644-3650
- Country of Publication:
- United States
- Language:
- English
Similar Records
Infrared spectra of HF complexes with CCl{sub 4}, CHCl{sub 3}, and CH{sub 2}Cl{sub 2} in solid argon
Kinetics and substrate selectivity of hydroxylation of arenes by trifluoroperoxyacetic acid in CH/sub 2/Cl/sub 2/ and CCl/sub 4/ solutions
The fate of atmospheric phosgene and the stratospheric chlorine loadings of its parent compounds: CCl{sub 4}, C{sub 2}Cl{sub 4}, C{sub 2}HCl{sub 3}, CH{sub 3}CCL{sub 3} and CHCl{sub 3}
Journal Article
·
Thu Aug 20 00:00:00 EDT 1992
· Journal of Physical Chemistry
·
OSTI ID:281149
Kinetics and substrate selectivity of hydroxylation of arenes by trifluoroperoxyacetic acid in CH/sub 2/Cl/sub 2/ and CCl/sub 4/ solutions
Journal Article
·
Sun May 01 00:00:00 EDT 1988
· Kinet. Catal. (Engl. Transl.); (United States)
·
OSTI ID:6093517
The fate of atmospheric phosgene and the stratospheric chlorine loadings of its parent compounds: CCl{sub 4}, C{sub 2}Cl{sub 4}, C{sub 2}HCl{sub 3}, CH{sub 3}CCL{sub 3} and CHCl{sub 3}
Journal Article
·
Thu Jan 19 23:00:00 EST 1995
· Journal of Geophysical Research
·
OSTI ID:146843