Structural variations in coal macerals: application of two-dimensional and dipolar dephasing /sup 13/C-NMR techniques

Journal Article · Sun Jan 01 04:00:00 EST 1984 · ACS Symp. Ser.; (United States)

DOI:https://doi.org/10.1021/bk-1984-0252.ch006· OSTI ID:5516035

Pugmire, R J; Woolfenden, W R; Mayne, C L; Karas, J; Grant, D M

Cross-polarization magic-angle spinning, dipolar dephasing, and two-dimensional dipolar dephasing carbon-13 NMR techniques were used to study structural variations in coals and coal macerals. The macerals were separated by density-gradient centrifugation. Data on 36 coal and maceral samples are given. Aromatic carbons, bridgehead carbons, and aliphatic carbons were distinguished.

• Research Organization: Univ. of Utah, Salt Lake City
• DOE Contract Number: FG22-80PC30226
• OSTI ID: 5516035
• Journal Information: ACS Symp. Ser.; (United States), Journal Name: ACS Symp. Ser.; (United States); ISSN ACSMC
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600* -- Coal
Lignite
& Peat-- Properties & Composition
ALKANES
AROMATICS
CARBON 13
CARBON ISOTOPES
CARBONACEOUS MATERIALS
CENTRIFUGATION
COAL
ENERGY SOURCES
EVEN-ODD NUCLEI
FOSSIL FUELS
FUELS
HYDROCARBONS
ISOTOPES
LIGHT NUCLEI
MACERALS
MAGNETIC RESONANCE
MATERIALS
MATERIALS TESTING
NONDESTRUCTIVE TESTING
NUCLEAR MAGNETIC RESONANCE
NUCLEI
ORGANIC COMPOUNDS
RESONANCE
SEPARATION PROCESSES
STABLE ISOTOPES
STRUCTURAL CHEMICAL ANALYSIS
TESTING