Solid state NMR methods for coal science. Progress report, October 1-December 31, 1985. [Cholesteryl acetate]
Technical Report
·
OSTI ID:5967184
This report covers the progress made on the title project during the last quarter. During the last three months we have concentrated on further developing a new 2-D NMR method that should be useful for coals. As outlined in a previous report 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 method has been successfully applied to a rather complex molecule, cholesteryl acetate. Even though there is severe spectral overlap in this model compound's CPMAS spectrum, the dipolar-shift correlation method allows us to assign each resonance. The distribution of functional types of carbon determined in this experiment appears to be close to quantitative. In addition we have begun to test our ultra high field CPMAS equipment on chemically modified coals. 4 figs.
- Research Organization:
- Yale Univ., New Haven, CT (USA). Dept. of Chemistry
- DOE Contract Number:
- FG22-83PC60791
- OSTI ID:
- 5967184
- Report Number(s):
- DOE/PC/60791-9; ON: DE86010155
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
01 COAL, LIGNITE, AND PEAT
010600* -- Coal
Lignite
& Peat-- Properties & Composition
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ACETIC ACID ESTERS
CARBON 13
CARBON ISOTOPES
CARBONACEOUS MATERIALS
CARBOXYLIC ACID ESTERS
CHEMICAL SHIFT
CHOLESTEROL
COAL
DATA
DATA ANALYSIS
DEUTERIUM
ENERGY SOURCES
ESTERS
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
FOSSIL FUELS
FUELS
HYDROGEN ISOTOPES
HYDROXY COMPOUNDS
INFORMATION
ISOTOPES
LIGHT NUCLEI
MAGNETIC RESONANCE
MATERIALS
MEASURING INSTRUMENTS
NMR SPECTRA
NMR SPECTROMETERS
NUCLEAR MAGNETIC RESONANCE
NUCLEI
NUMERICAL DATA
ODD-ODD NUCLEI
OPTIMIZATION
ORGANIC COMPOUNDS
RESEARCH PROGRAMS
RESONANCE
SPECTRA
SPECTROMETERS
STABLE ISOTOPES
STEROIDS
STEROLS
STRUCTURAL CHEMICAL ANALYSIS
010600* -- Coal
Lignite
& Peat-- Properties & Composition
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ACETIC ACID ESTERS
CARBON 13
CARBON ISOTOPES
CARBONACEOUS MATERIALS
CARBOXYLIC ACID ESTERS
CHEMICAL SHIFT
CHOLESTEROL
COAL
DATA
DATA ANALYSIS
DEUTERIUM
ENERGY SOURCES
ESTERS
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
FOSSIL FUELS
FUELS
HYDROGEN ISOTOPES
HYDROXY COMPOUNDS
INFORMATION
ISOTOPES
LIGHT NUCLEI
MAGNETIC RESONANCE
MATERIALS
MEASURING INSTRUMENTS
NMR SPECTRA
NMR SPECTROMETERS
NUCLEAR MAGNETIC RESONANCE
NUCLEI
NUMERICAL DATA
ODD-ODD NUCLEI
OPTIMIZATION
ORGANIC COMPOUNDS
RESEARCH PROGRAMS
RESONANCE
SPECTRA
SPECTROMETERS
STABLE ISOTOPES
STEROIDS
STEROLS
STRUCTURAL CHEMICAL ANALYSIS