Coadsorption and reaction of H/sub 2/ and CO on Raney nickel: neutron vibrational spectroscopy

Journal Article · Sat Oct 01 04:00:00 EDT 1983 · J. Catal.; (United States)

OSTI ID:5513958

Kelley, R D; Cavanagh, R R; Rush, J J

Neutron inelastic scattering (NIS) has been used to monitor vibrational modes during the adsorption and reaction of hydrogen and CO on Raney nickel. Evidence for a temperature dependent hydrogen/CO interaction is observed. The results show that CO coadsorbed in equivalent amounts with a saturation layer of H at 80 K has little impact on the H vibrational spectrum and thus on the force constant or configuration of the threefold binding sites occupied by hydrogen. Raising the temperature of the CO + H layer to 295 K shows significant H-CO interactions. Preliminary NIS experiments for H/sub 2//CO gas mixtures under flow conditions indicate that the adsorbed layer present under reaction conditions, i.e., during substantial (approx. 50%) conversion of CO to hydrocarbons (450 K) is dominated by the same adsorbates which are found under non reactive (i.e., no conversion of CO to hydrocarbons) conditions (300 K). 3 figures.

• Research Organization: National Bureau of Standards, Washington, DC
• OSTI ID: 5513958
• Journal Information: J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 83:2; ISSN JCTLA
• Country of Publication: United States
• Language: English

Related Subjects

090121* -- Hydrocarbon Fuels-- Chemical Synthesis-- (1976-1989)
10 SYNTHETIC FUELS
ADSORPTION
ALKANES
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
DATA
ELEMENTS
ENERGY LEVELS
EXCITED STATES
EXPERIMENTAL DATA
HIGH TEMPERATURE
HYDROCARBONS
HYDROGEN
INELASTIC SCATTERING
INFORMATION
LOW TEMPERATURE
MEDIUM TEMPERATURE
METALS
METHANATION
METHANE
NEUTRON SPECTROSCOPY
NICKEL
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PARTICLE SIZE
POWDERS
SCATTERING
SIZE
SORPTION
SORPTIVE PROPERTIES
SPECTROSCOPY
SURFACE PROPERTIES
TEMPERATURE DEPENDENCE
TRANSITION ELEMENTS
VIBRATIONAL STATES
YIELDS