Interaction of ethylene with the Ru(001) surface

Journal Article · Wed Jun 25 00:00:00 EDT 1986 · J. Am. Chem. Soc.; (United States)

DOI:https://doi.org/10.1021/ja00273a002· OSTI ID:5456200

Hills, M M; Parmeter, J E; Mullins, C B; Weinberg, W H

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), Journal Name: J. Am. Chem. Soc.; (United States) Vol. 108:13; ISSN JACSA
• Country of Publication: United States
• Language: English

Related Subjects

090121 -- Hydrocarbon Fuels-- Chemical Synthesis-- (1976-1989)
10 SYNTHETIC FUELS
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ALKENES
CATALYSIS
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL REACTIONS
CRYSTALS
DATA
DESORPTION
DEUTERIUM COMPOUNDS
ELEMENTS
ETHYLENE
EXPERIMENTAL DATA
HIGH TEMPERATURE
HYDROCARBONS
HYDROGEN COMPOUNDS
INFORMATION
ISOTOPE EFFECTS
LOW TEMPERATURE
MEDIUM TEMPERATURE
METALS
MONOCRYSTALS
NUMERICAL DATA
ORGANIC COMPOUNDS
PLATINUM METALS
RUTHENIUM
SORPTIVE PROPERTIES
SURFACE PROPERTIES
TRANSITION ELEMENTS