Adsorption and reaction on thin metal overlayers
Conference
·
OSTI ID:6650133
These studies hae addressed the adsorption of CO on very thin submonolayer to multilayer) deposits of Cu, Ni, Pd, and Fe on single crystals of Ru and W. The kinetics of the methanation, ethane hydrogenolysis, and cyclohexane dehydrogenation reactions have also been measured over these model bimetallic catalysts. Temperature programmed desorption (TPD) spectra of CO a submonolayer coverages reveal new desorption features which have significantly perturbed peak maxima from those observed on the bulk metals, indicating the unique character of these monolayer metallic films. This behavior has been correlated with LEED, ARUPS, work function, and kinetic measurements.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (USA)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 6650133
- Report Number(s):
- SAND-87-0761C; CONF-861207-98; ON: DE87008520
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ADSORPTION
ALKANES
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYSTS
CHALCOGENIDES
CHEMICAL REACTIONS
COPPER
CYCLOALKANES
CYCLOHEXANE
DEHYDROGENATION
DESORPTION
ELEMENTS
ETHANE
HYDROCARBONS
HYDROGENATION
IRON
METALS
METHANATION
NICKEL
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PALLADIUM
PLATINUM METALS
RUTHENIUM
SORPTION
SURFACE PROPERTIES
TRANSITION ELEMENTS
TUNGSTEN
360104* -- Metals & Alloys-- Physical Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ADSORPTION
ALKANES
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYSTS
CHALCOGENIDES
CHEMICAL REACTIONS
COPPER
CYCLOALKANES
CYCLOHEXANE
DEHYDROGENATION
DESORPTION
ELEMENTS
ETHANE
HYDROCARBONS
HYDROGENATION
IRON
METALS
METHANATION
NICKEL
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PALLADIUM
PLATINUM METALS
RUTHENIUM
SORPTION
SURFACE PROPERTIES
TRANSITION ELEMENTS
TUNGSTEN