Chemistry of inorganic compounds – Oxygen or compound thereof – Superoxide or ozone
Patent
1989-12-22
1992-09-01
Langel, Wayne
Chemistry of inorganic compounds
Oxygen or compound thereof
Superoxide or ozone
C01B 1504
Patent
active
051437104
ABSTRACT:
Three methods are provided for generating superoxide ions in an aprotic solvent. In each method a compound that is dependent on the particular reaction mechanism of the method reacts with dioxygen dissolved in the aprotic solvent and hydroxide ions or alkoxide ions in solution in the aprotic solvent to generate the superoxide ions. In the first method, hydrogen donor compounds such as aniline and N-substituted anilines, or phenylhydrazine and phenylhydrazine derivatives, react with the dioxygen and hydroxide ions or alkoxide ions to generate concentrations of superoxide ions in the aprotic solvent. In the second method, proton donor compounds such as hydroxylamine and N-substituted hydroxylamines react with the dioxygen and hydroxide ions or alkoxide ions to generate concentrations of superoxide ions in the aprotic solvent. In the third method, hydrazine reacts with the dioxygen and hydroxide ions or alkoxide ions to generate superoxide ions in the aprotic solvent when catalyzed by anthraquinone and anthraquinone derivatives. The solution of superoxide ions in an aprotic solvent may then be used to degrade halogenated hydrocarbons.
REFERENCES:
patent: 3260570 (1966-07-01), Russell
patent: 4410402 (1983-10-01), Sawyer et al.
patent: 4468297 (1984-08-01), Sawyer et al.
Thomas S. Calderwood et al., "Oxidation of Substituted Hydrazines by Superoxide Ion: The Initiation Step for the Autoxidation of 1,2-diphenylhydrazine", J. Am. Chem. Soc., (1984), 106, 4683-4687.
Chemical Abstracts 105(25): 221071n.
Sawyer et al.; "Superoxide and Superoxide Dismutase in Chemistry", (1988); pp. 88, 89, 90, and 91.
Roberts et al., Journal of the American Chemical Society, Oxygenation by Superoxide Ion of CCl.sub.4, FCCl.sub.4, HCCl.sub.4, p,p'-DDT and Related Trichloromethyl Substrates (RCCl.sub.3) in Aprotic Solvents, 1983.
Sugimoto et al., Journal of the American Chemical Society, Oxygenation of Polychloro Aromatic Hydrocarbons by a Superoxide Ion in Aprotic Media, 1987.
Sugimoto et al., Environmental Science & Technology, Degradation and Dehalogenation of Polychlorobiphenyls and Halogenated Aromatic Molecules by Superoxide Ion and by Electrolytic Reduction, 1988.
Jeon Seungwon
Sawyer Donald T.
Tsang Paul K. S.
Langel Wayne
The Texas A & M University System
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