Solid state NMR methods for coal science. Progress report, April 1, 1985-June 30, 1985

Technical Report · Sun Sep 01 04:00:00 EDT 1985

OSTI ID:5360215

Zilm, K W

This report covers the progress made on the title project during the last quarter. During the last three months we have concentrated on developing a new 2-D NMR method that should be useful for coals. This new technique separates the contribution of methines, methylenes and methyl or quaternary carbons to the carbon-13 CPMAS spectra of coals. In contrast to the heteronuclear shift correlation method, which observes only protonated carbons, this method observes all carbon centers seen in a standard CPMAS spectrum. The separation is based on the different patterns that are characteristic of the dipolar spectra of carbons with differing numbers of attached protons. Some progress has also been made in understanding intensity distortions that can arise in carbon-13/proton shift correlation spectra. 3 figs.

• Research Organization: Yale Univ., New Haven, CT (USA). Dept. of Chemistry
• DOE Contract Number: FG22-83PC60791
• OSTI ID: 5360215
• Report Number(s): DOE/PC/60791-7; ON: DE85018055
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600* -- Coal
Lignite
& Peat-- Properties & Composition
CARBON 13
CARBON ISOTOPES
CARBONACEOUS MATERIALS
CHEMICAL SHIFT
COAL
DATA
DEUTERIUM
ENERGY SOURCES
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
FOSSIL FUELS
FUELS
HYDROGEN ISOTOPES
INFORMATION
ISOTOPES
LIGHT NUCLEI
MAGNETIC RESONANCE
MATERIALS
NMR SPECTRA
NUCLEAR MAGNETIC RESONANCE
NUCLEI
NUMERICAL DATA
ODD-ODD NUCLEI
RESEARCH PROGRAMS
RESONANCE
SPECTRA
STABLE ISOTOPES
STRUCTURAL CHEMICAL ANALYSIS