ESCA study of alkali promoter effects on silica-supported ruthenium catalysts

Journal Article · Thu Nov 07 04:00:00 EST 1985 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100269a020· OSTI ID:6126864

Shyu, J Z; Goodwin, Jr, J G; Hercules, D M

An ESCA study has been carried out to characterize the effect of alkali promotion on ruthenium-silica catalysts. Alkali promotion of Ru was found to result in a significant increase in the atomic relaxation energy in addition to a presumed reduction in the work function. While it was not possible to determine the amount, if any, of electron charge transfer from the promoter to the Ru, it was also not possible to rule out such a transfer. The anions associated with the alkali ions, however, appeared to have little effect on the electronic structure of the Ru. The study reported in this paper is one of the most complete investigations to date of the modification by alkali promotion of the electronic structure of a supported transition-metal catalyst. 42 references, 5 figures, 4 tables.

• Research Organization: Univ. of Pittsburgh, PA
• DOE Contract Number: FG22-82PC50810
• OSTI ID: 6126864
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 89:23; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ADSORPTION
ALKALI METALS
BINDING ENERGY
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYSTS
CHALCOGENIDES
CHEMICAL REACTIONS
DATA
ELECTRON SPECTROSCOPY
ELECTRONIC STRUCTURE
ELEMENTS
ENERGY
EXPERIMENTAL DATA
HYDROGEN
INFORMATION
METALS
NONMETALS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PLATINUM METALS
POTASSIUM
RUTHENIUM
SILICON COMPOUNDS
SILICON OXIDES
SODIUM
SORPTION
SPECTROSCOPY
TRANSITION ELEMENTS