Carbonyl sulfide/carbon chemistry: (Final report)
Technical Report
·
OSTI ID:7231109
This study examined the effects of treating isotropic char, coal tar, and coal with carbonyl sulfide, OCS. The substrates were treated with moderate pressures of OCS at 400-550/sup 0/C for several hours. Gas chromatographic analyses showed that the autoclave gases contained CO, CO/sub 2/, H/sub 2/S, and unreacted OCS as the principal components after reaction. The predominant reaction was the decomposition of OCS to CO and S. Sulfur percentages for all of the treated substrates were increased by 10% or more. Polarized light reflectance microscopy showed that anisotropic carbon (mesopase) was present in coal samples treated with sulfur gases. The study demonstrates that OCS is a potent resulfurization agent for all of the substrates examined. Cabonyl sulfide and hydrogen sulfide, included in the study for comparison, facilitate the formation of mesophasic structures in the coal studied. 9 refs., 6 figs., 12 tabs.
- Research Organization:
- Southern Illinois Univ., Carbondale (USA). Dept. of Chemistry and Biochemistry; Illinois State Geological Survey, Champaign (USA)
- DOE Contract Number:
- FC22-83FE60339
- OSTI ID:
- 7231109
- Report Number(s):
- DOE/FE/60339-T44; ON: DE87002935
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
01 COAL, LIGNITE, AND PEAT
010600* -- Coal
Lignite
& Peat-- Properties & Composition
AUTOCLAVES
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON MONOXIDE
CARBON OXIDES
CARBON OXYSULFIDE
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHARS
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
CHROMATOGRAPHY
COAL
COAL TAR
COHERENT SCATTERING
DATA
DIFFRACTION
ELEMENTS
ENERGY SOURCES
EXPERIMENTAL DATA
FOSSIL FUELS
FUELS
GAS ANALYSIS
GAS CHROMATOGRAPHY
HIGH TEMPERATURE
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
INFORMATION
IRON COMPOUNDS
IRON SULFIDES
MATERIALS
MEDIUM PRESSURE
MICROSCOPY
MINERALS
NITROGEN
NONMETALS
NUMERICAL DATA
OPTICAL MICROSCOPY
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PYROLYSIS PRODUCTS
PYRRHOTITE
RESEARCH PROGRAMS
SCATTERING
SEPARATION PROCESSES
SULFIDE MINERALS
SULFIDES
SULFUR
SULFUR COMPOUNDS
SULFUR CONTENT
TAR
TIME DEPENDENCE
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION
010600* -- Coal
Lignite
& Peat-- Properties & Composition
AUTOCLAVES
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON MONOXIDE
CARBON OXIDES
CARBON OXYSULFIDE
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHARS
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
CHROMATOGRAPHY
COAL
COAL TAR
COHERENT SCATTERING
DATA
DIFFRACTION
ELEMENTS
ENERGY SOURCES
EXPERIMENTAL DATA
FOSSIL FUELS
FUELS
GAS ANALYSIS
GAS CHROMATOGRAPHY
HIGH TEMPERATURE
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
INFORMATION
IRON COMPOUNDS
IRON SULFIDES
MATERIALS
MEDIUM PRESSURE
MICROSCOPY
MINERALS
NITROGEN
NONMETALS
NUMERICAL DATA
OPTICAL MICROSCOPY
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PYROLYSIS PRODUCTS
PYRRHOTITE
RESEARCH PROGRAMS
SCATTERING
SEPARATION PROCESSES
SULFIDE MINERALS
SULFIDES
SULFUR
SULFUR COMPOUNDS
SULFUR CONTENT
TAR
TIME DEPENDENCE
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION