Chemisorption studies on Cs/Cu(110): Model studies of cesium promoters on copper-based catalysts

Journal Article · Mon May 01 04:00:00 EDT 1989 · J. Vac. Sci. Technol., A; (United States)

DOI:https://doi.org/10.1116/1.575983· OSTI ID:6181520

Rodriguez, J A; Clendening, W D; Campbell, J M; Min, W; Campbell, C T

The adsorption of CO, CO/sub 2/, and H/sub 2/ O, the coadsorption of oxygen and H/sub 2/ O, and the coadsorption of CO and surface hydroxyl (OH/sub a/)= on clean and cesium-covered Cu(110) surfaces have been studied with thermal desorption mass spectroscopy, x-ray photoelectron spectroscopy, Auger electron spectroscopy, and work function measurements. We review here results which show that the presence of preadsorbed cesium dramatically affects the adsorption behavior and surface chemistry of CO, CO/sub 2/, and H/sub 2/ O on Cu(110). We also present new results which show that surface formate (HCOO/sub a/) is not produced in any observable amount upon heating coadsorbed CO/sub a/ and OH/sub a/ on clean or Cs-dosed Cu(110). The implication of these results to Cs promotion of the catalytic water--gas shift and methanol synthesis reactions over Cu will be discussed.

• Research Organization: Chemistry Department, Indiana University, Bloomington, Indiana 47405
• OSTI ID: 6181520
• Journal Information: J. Vac. Sci. Technol., A; (United States), Journal Name: J. Vac. Sci. Technol., A; (United States) Vol. 7:3; ISSN JVTAD
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALKALI METALS
AUGER ELECTRON SPECTROSCOPY
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON MONOXIDE
CARBON OXIDES
CESIUM
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISORPTION
COPPER
DATA
ELECTRON SPECTROSCOPY
ELEMENTS
EXPERIMENTAL DATA
FUNCTIONS
HYDROGEN COMPOUNDS
HYDROXYL RADICALS
INFORMATION
LAYERS
MASS SPECTROSCOPY
METALS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHOTOELECTRON SPECTROSCOPY
RADICALS
SEPARATION PROCESSES
SORPTION
SPECTROSCOPY
SURFACE PROPERTIES
TRANSITION ELEMENTS
WATER
WORK FUNCTIONS