Selective oxidations of organosulfur model compounds and coal for the removal of organic sulfur

Conference · Tue Jan 01 04:00:00 EST 1991

OSTI ID:7046269

Fauth, D J; Baltrus, J P; Nowak, M A; Olson, G J

Investigations with organosulfur compounds have established that potassium monopersulfate (Oxone) in aqueous ethanol and sodium perborate in glacial acetic acid are highly selective oxidants for the oxidation of organic sum ides and aromatic sulfur heterocycles to their corresponding sulfoxides and sulfones. In a series of selective oxidations, dibenzothiophene in ethanol, fluorene in ethanol, and a 50:50 mol mixture of dibenzothiophene (DBT) and fluoresce in ethanol were reacted with aqueous Oxone under mild conditions. Capillary gas chromatographic analyses showed conversions of DBT to DBT-5,5-dioxide, while its carbon analog, fluorene was recovered quantitatively in every case. Furthermore, selective oxidations with Oxone of a triboelectrostatically cleaned Illinois {number sign}6 ultrafine coal (400 mesh {times} 0) and an Illinois {number sign}6 coal (IBC-101) (200 mesh {times} 0) depyritized via microorganisms were investigated. X-ray photoelectron spectroscopic (XPS) data indicated oxidation of a large fraction of the organic sulfur on the coal surface. Approximately 55--85% of the total S 2p area could be attributed to oxidized organic sulfur in the form of sulfones.

• Research Organization: USDOE Pittsburgh Energy Technology Center, PA (United States). Coal Preparation Div.
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• OSTI ID: 7046269
• Report Number(s): CONF-910819-3; ON: DE92018734
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402* -- Coal
Lignite
& Peat-- Purification & Upgrading
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ALCOHOLS
ALKALI METAL COMPOUNDS
AROMATICS
BITUMINOUS COAL
BLACK COAL
BORATES
BORON COMPOUNDS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
CHROMATOGRAPHY
COAL
CONDENSED AROMATICS
DESULFURIZATION
ENERGY SOURCES
ETHANOL
FLUORENE
FOSSIL FUELS
FUELS
GAS CHROMATOGRAPHY
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
HYDROXY COMPOUNDS
MATERIALS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXIDATION
OXYGEN COMPOUNDS
POLYCYCLIC SULFUR HETEROCYCLES
POTASSIUM COMPOUNDS
POTASSIUM SULFATES
REMOVAL
SEPARATION PROCESSES
SIMULATION
SODIUM COMPOUNDS
SPECTROSCOPY
SULFATES
SULFONES
SULFOXIDES
SULFUR COMPOUNDS
X-RAY SPECTROSCOPY