Generation of singlet oxygen by a lithium-tin-phosphorus catalyst

Journal Article · Tue Aug 01 00:00:00 EDT 1978 · J. Catal.; (United States)

DOI:https://doi.org/10.1016/0021-9517(78)90023-4· OSTI ID:5382332

Guillory, J P; Shiblom, G M

The generation of singlet oxygen by a lithium-tin-phosphorus catalyst, its desorption, and detection by reaction with rubrene were achieved at temperatures above 500/sup 0/C. The rate of singlet oxygen formation (23 kcal/mole excitation energy) increased with increasing temperature and decreased as a function of time on stream. The addition of 1% hydrogen or 1% 1-butene to the oxygen feed also decreased the generation of singlet oxygen, probably by reducing the catalyst surface and destroying the active sites. Tests with various two-component combinations of lithium, tin, and phosphorus showed that the lithium component in the catalyst is important in singlet oxygen generation, although tin-phosphorus catalysts as well as the three-component catalyst are active in the oxidative dehydrogenation of alkenes. Twenty other transition metal oxide catalysts tested showed no or insignificant levels of singlet oxygen desorption, thus disputing Krylov's theory on the role of singlet oxygen in olefin oxidation over the catalysts.

• Research Organization: Phillips Pet. Co.
• OSTI ID: 5382332
• Journal Information: J. Catal.; (United States), Vol. 54:1
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ALKENES
DEHYDROGENATION
OXIDATION
BUTENES
CHEMICAL REACTIONS
HYDROGEN
LITHIUM
CATALYTIC EFFECTS
PHOSPHORUS
TIN
EXCITATION
HIGH TEMPERATURE
OXYGEN
ALKALI METALS
ELEMENTS
ENERGY-LEVEL TRANSITIONS
HYDROCARBONS
METALS
NONMETALS
ORGANIC COMPOUNDS
400301* - Organic Chemistry- Chemical & Physicochemical Properties- (-1987)