Extraction, separation and analysis of high sulfur coal

Technical Report · Mon Apr 02 00:00:00 EDT 1990

DOI:https://doi.org/10.2172/7273242· OSTI ID:7273242

Olesik, S V ^[1]

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1. comp.

In summary, significant bond cleavage was found only for thiophenol under the supercritical conditions studied. Less than 5% yield was found for the observed reaction products for all the other organosulfur compounds. The hydrogen sulfur bond in thiophenol is clearly the weakest of those studied and therefore it is the easiest to rupture. Also a general trend was observed the solvolysis reaction products such as ethylthiobenzene were the products initially formed at lower temperatures. But with higher temperatures the reaction product were those typically produced from the bimolecular association of free-radicals, such as phenylsulfide for the thiophenol sample. This type of reaction would be expected in pyrolysis reactions. Bimolecular reactions between organosulfur compounds would not be expected when the reaction is occurring at the surface of the solid coal matrix. The probability of the extracted organosulfur radicals having such bimolecular reactions is quite low. However, the reactions that are observed from the interaction of supercritical ethanol and the model coal compounds are not ones that show obvious indications of desulfurization of the compound.

• Research Organization: Ohio State Univ. Research Foundation, Columbus, OH (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC22-87PC79887
• OSTI ID: 7273242
• Report Number(s): DOE/PC/79887-T12; ON: DE92040297
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL
STRUCTURAL MODELS
CHEMICAL BONDS
CLEAVAGE
ETHANOL
ORGANIC SULFUR COMPOUNDS
PROGRESS REPORT
SUPERCRITICAL STATE
ALCOHOLS
CARBONACEOUS MATERIALS
CRYSTAL STRUCTURE
DOCUMENT TYPES
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROXY COMPOUNDS
MATERIALS
MICROSTRUCTURE
ORGANIC COMPOUNDS
010402* - Coal
Lignite
& Peat- Purification & Upgrading
010600 - Coal
Lignite
& Peat- Properties & Composition