Organometallic surface chemistry: Final report for period July 1, 1983-September 14, 1986
Most of our research was directed toward the role of promoters in heterogeneous CO hydrogenation and in hydroformylation reactions. It was found that the addition of Zn to a Rh/SiO/sub 2/ hydroformylation catalyst influences the ratio of hydroformylation to ethylene hydrogenation. A maximum is selectivity toward the oxygenated products was observed at a mole ratio of 0.05 Zn/Rh. Some possible roles of zinc are site blocking and an increased rate of CO insertion by Zn(II)-OC interactions. The latter type of interaction is known to promote CO insertion in organometallic compounds. In a second area of research, CCO has been characterized by vibrational spectroscopy in (Ru/sub 3/(CO)/sub 9/(CCO))/sup 2 -/. Analogy with molecular cluster chemistry suggests that CCO is likely to form on carbided closest packed metal surfaces and vibrational spectroscopy is a promising tool for testing this postulate.
- Research Organization:
- Northwestern Univ., Evanston, IL (USA). Dept. of Chemistry
- DOE Contract Number:
- AC02-83ER13104
- OSTI ID:
- 6950861
- Report Number(s):
- DOE/ER/13104-2; ON: DE87006812
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400201* -- Chemical & Physicochemical Properties
ALKENES
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CARBONYLATION
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
ELEMENTS
ETHYLENE
HYDROCARBONS
HYDROGENATION
METALS
METHANATION
MINERALS
ORGANIC COMPOUNDS
ORGANOMETALLIC COMPOUNDS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PLATINUM METALS
PROMOTERS
RHODIUM
SILICA
SILICON COMPOUNDS
SILICON OXIDES
SPECTROSCOPY
TRANSITION ELEMENTS
ZINC