Carbon-13 NMR studies of coals by cross polarization and magic-angle spinning

Conference · Sun Dec 31 23:00:00 EST 1978 · Prepr., Div. Pet. Chem., Am. Chem. Soc.; (United States)

OSTI ID:5954874

Miknis, F P ^[1]; Maciel, G E; Bartuska, V J

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1. Laramie Energy Tech. Center, WY

/sup 13/C NMR measurements were made on a Texas lignite, Wyoming subbituminous coals, Illinois bituminous, Indiana bituminous, and eastern bituminous coals, and an anthracite. The main structural distinction that could be made using magic-angle spinning with cross-polarization was between aliphatic and aromatic carbons. In progressing from a lignite to a bituminous coal to an anthracite, the percent organic carbon of the material increases, which tends to increase the heating value. Oxygen-containing species tend to decrease the heating value of a coal. 5 figures.

• OSTI ID: 5954874
• Report Number(s): CONF-790415-P3
• Journal Information: Prepr., Div. Pet. Chem., Am. Chem. Soc.; (United States), Journal Name: Prepr., Div. Pet. Chem., Am. Chem. Soc.; (United States) Vol. 24:2; ISSN ACPCA
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600* -- Coal
Lignite
& Peat-- Properties & Composition
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400600 -- Radiation Chemistry
ACYL RADICALS
ANTHRACITE
AROMATICS
BITUMINOUS COAL
BLACK COAL
BROWN COAL
CARBON 13
CARBON ISOTOPES
CARBONACEOUS MATERIALS
COAL
ENERGY SOURCES
EVEN-ODD NUCLEI
FOSSIL FUELS
FUELS
ISOTOPES
LIGHT NUCLEI
LIGNITE
MAGNETIC RESONANCE
NUCLEAR MAGNETIC RESONANCE
NUCLEI
ORGANIC COMPOUNDS
ORIENTATION
POLARIZATION
RADICALS
RESONANCE
SPIN ORIENTATION
STABLE ISOTOPES
STRUCTURAL CHEMICAL ANALYSIS
SUBBITUMINOUS COAL