Oxidation of sulfur compounds in petroleum residues: reactivity-structural relationships
Studies have been made on the reactivity of sulfur entities in oxidized asphalts and oxidized petroleum distillation residues during air oxidation. Asphalts are referred to as residues. The oxidation of these materials includes the rapid formation of an unsymmetrical ir band at ca 1030/cm. Sulfoxides are not normally found in unoxidized petroleum residues, but develop rapidly during air aging. Their presence in these residues has been inferred from their specific bands in ir spectra. Confirmation of sulfoxides was obtained from deoxygenation with chlorocarbenes and decomposition with bromine and peracetic acid. Hydroperoxides in amounts that might interfere with sulfoxide determination were not found in oxidated residues. The concentration of sulfoxides formed during air oxidation was found to rapidly reach a maximum value and to remain constant on further oxidation of the residue. Model studies indicate that hydroperoxides play a role in sulfoxide formation. The data show that both alkyl and aryl sulfides were present in aliphatic residues, that predominantly alkyl types were oxidized during oxidative aging in air and that concentrations of the alkyl and aryl types vary with crude source. Peracetic acid oxidation of the residues indicated that most of the sulfur present was in the form of sulfides. 2 figures, 6 tables.
- Research Organization:
- Laramie Energy Technology Center, WY
- OSTI ID:
- 6465533
- Report Number(s):
- CONF-810813-(Vol.2)
- Journal Information:
- Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States), Vol. 26:4; Conference: National American Chemical Society summer meeting, New York, NY, USA, 23 Aug 1981
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ACETIC ACID
CHEMICAL REACTIONS
BENZENE
BROMINE
CARBENES
HYDROGEN PEROXIDE
OXYGEN
PETROLEUM RESIDUES
FRACTIONATION
OXIDATION
POTASSIUM HYDROXIDES
SULFONES
CHEMICAL REACTION YIELD
STRUCTURAL CHEMICAL ANALYSIS
SULFOXIDES
EXPERIMENTAL DATA
GAS CHROMATOGRAPHY
INFRARED SPECTRA
PYRIDINE
ALKALI METAL COMPOUNDS
AROMATICS
AZINES
CARBOXYLIC ACIDS
CHROMATOGRAPHY
DATA
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
HALOGENS
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROXIDES
INFORMATION
MONOCARBOXYLIC ACIDS
NONMETALS
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXYGEN COMPOUNDS
PEROXIDES
PETROLEUM
PETROLEUM FRACTIONS
POTASSIUM COMPOUNDS
PYRIDINES
RADICALS
SEPARATION PROCESSES
SPECTRA
YIELDS
023000* - Petroleum- Properties & Composition
400105 - Separation Procedures
400104 - Spectral Procedures- (-1987)