Interaction of ethylene with the Ru(001) surface
The interaction of ethylene with the Ru(001) surface has been investigated via high-resolution electron energy loss spectroscopy and thermal desorption mass spectrometry. Following desorption of an ethylene multilayer at 110 K, di-sigma-bonded molecular ethylene is present on the surface. Competing desorption of molecular ethylene and dehydrogenation to form adsorbed ethylidyne (CCH/sub 3/) and acetylide (CCH) as well as hydrogen adatoms occur between approximately 150 and 260 K. The ethylidyne is stable to approximately 330 K, whereupon it begins to decompose to carbon and hydrogen adatoms. The desorption of hydrogen occurs in a sharp peak centered at 355 K, resulting from simultaneous ethylidyne decomposition and desorption of surface hydrogen. Further annealing of the overlayer to 380 K causes cleavage of the carbon-carbon bond of the acetylide, creating carbon adatoms and adsorbed methylidyne (CH). The methylidyne decomposes above 500 K with accompanying hydrogen desorption, leaving only carbon adatoms on the surface at 700 K.
- Research Organization:
- California Institute of Technology, Pasadena
- OSTI ID:
- 5456200
- Journal Information:
- J. Am. Chem. Soc.; (United States), Vol. 108:13
- Country of Publication:
- United States
- Language:
- English
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Interaction of acetylene with the Ru(001) surface
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
10 SYNTHETIC FUELS
DEUTERIUM COMPOUNDS
CHEMICAL REACTIONS
ETHYLENE
RUTHENIUM
CATALYTIC EFFECTS
SORPTIVE PROPERTIES
CATALYSIS
CATALYSTS
DESORPTION
EXPERIMENTAL DATA
HIGH TEMPERATURE
ISOTOPE EFFECTS
LOW TEMPERATURE
MEDIUM TEMPERATURE
MONOCRYSTALS
ALKENES
CRYSTALS
DATA
ELEMENTS
HYDROCARBONS
HYDROGEN COMPOUNDS
INFORMATION
METALS
NUMERICAL DATA
ORGANIC COMPOUNDS
PLATINUM METALS
SURFACE PROPERTIES
TRANSITION ELEMENTS
400301* - Organic Chemistry- Chemical & Physicochemical Properties- (-1987)
090121 - Hydrocarbon Fuels- Chemical Synthesis- (1976-1989)