Fused salt reactions of organosulfur compounds
The treatment of coal with molten caustic is an effective method for cleaning coal. Molten caustic treatment removes not only mineral matter but most of the sulfur, including organic sulfur, from coal. While the chemical processes leading to the removal of inorganic sulfur have been examined, the mechanics of organic sulfur removal is less understood. Coal characterization studies suggest that the organosulfur moieties in coal may be largely thiophene-type ring structures. A preliminary investigation in this laboratory studied the reaction of benzothiophene with sodium and potassium hydroxides. Evidence was obtained that o-thiocresolates were intermediates in the desulfurization reaction. The overall reaction is multistep; the ring opening is a key step, since only after conversion to a thio derivative does desulfurization take place. Our findings on the desulfurization of thiols and thiol derivatives will be discussed here.
- Research Organization:
- Department of Energy, Pittsburgh, PA (USA)
- OSTI ID:
- 5970849
- Report Number(s):
- CONF-870802-
- Journal Information:
- Prepr. Pap., Am. Chem. Soc., Div. Fuel Chem.; (United States), Journal Name: Prepr. Pap., Am. Chem. Soc., Div. Fuel Chem.; (United States) Vol. 32:4; ISSN ACFPA
- Country of Publication:
- United States
- Language:
- English
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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALKALI METAL COMPOUNDS
CATALYSIS
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL REACTIONS
DATA
DESULFURIZATION
ELEMENTS
EXPERIMENTAL DATA
HYDROGEN COMPOUNDS
HYDROXIDES
INFORMATION
METALS
MOLTEN SALTS
NICKEL
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXYGEN COMPOUNDS
POTASSIUM COMPOUNDS
POTASSIUM HYDROXIDES
SALTS
SODIUM COMPOUNDS
SODIUM HYDROXIDES
THIOLS
TRANSITION ELEMENTS