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

Conference · Tue Jan 01 00:00:00 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: USDOE; USDOE, Washington, DC (United States)
• OSTI ID: 7046269
• Report Number(s): CONF-910819-3; ON: DE92018734
• Resource Relation: Conference: 4. international conference on processing and utilization of high sulfur coals, Idaho Falls, ID (United States), 26-30 Aug 1991
• Country of Publication: United States
• Language: English

Related Subjects

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