A solid-state NMR study of condensation/retrograde reactions during coal liquefaction
Technical Report
·
OSTI ID:5789989
The objective of this work is to perform an NMR study of the aromaticity in coals, coal derived products and/or compounds generated by pyrolysis and thermal solubilization of coal in the presence of a hydrogen donor solvent. Cross Polarization with Magic-Angle Spinning (CP/MAS) will be used to measure the carbon aromaticity, and Combined Rotation and Multiple Pulse Spectroscopy (CRAMPS) NMR techniques will be used to measure the hydrogen aromaticity. From these NMR measurements the aromatic hydrogen-to- carbon ratio will be obtained and used to study condensation/retrograde reactions during coal liquefaction. The study consists of four tasks: (1)develop NMR methods to determine aromatic carbon by CP/MAS and aromatic hydrogen by CRAMPS for low hydrogen containing organic solids such as coals, and coal residues; (2) characterize the feasibility of applying the NMR method for quantitative measures in coals; (3) analyze selected samples of coals and coal-derived products to demonstrate applicability of the NMR methods to study coal liquefaction, and (4) report the results to the Department of Energy. 4 refs., 5 figs., 2 tabs.
- Research Organization:
- Western Research Inst., Laramie, WY (USA)
- Sponsoring Organization:
- DOE; USDOE, Washington, DC (USA)
- DOE Contract Number:
- AC22-88PC88813
- OSTI ID:
- 5789989
- Report Number(s):
- DOE/PC/88813-T7; ON: DE91014406
- Country of Publication:
- United States
- Language:
- English
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A solid-state NMR study of condensation/retrograde reactions during coal liquefaction: Quarterly progress report, January 1, 1989--March 31, 1989
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Related Subjects
01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
010600 -- Coal
Lignite
& Peat-- Properties & Composition
CARBON 13
CARBON ISOTOPES
CHEMICAL REACTIONS
COAL LIQUEFACTION
DOCUMENT TYPES
EVEN-ODD NUCLEI
HYDROGEN 1
HYDROGEN ISOTOPES
ISOTOPES
LIGHT NUCLEI
LIQUEFACTION
MAGNETIC RESONANCE
NMR SPECTRA
NUCLEAR MAGNETIC RESONANCE
NUCLEI
ODD-EVEN NUCLEI
PROGRESS REPORT
RESONANCE
SPECTRA
STABLE ISOTOPES
STRUCTURAL CHEMICAL ANALYSIS
THERMOCHEMICAL PROCESSES
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
010600 -- Coal
Lignite
& Peat-- Properties & Composition
CARBON 13
CARBON ISOTOPES
CHEMICAL REACTIONS
COAL LIQUEFACTION
DOCUMENT TYPES
EVEN-ODD NUCLEI
HYDROGEN 1
HYDROGEN ISOTOPES
ISOTOPES
LIGHT NUCLEI
LIQUEFACTION
MAGNETIC RESONANCE
NMR SPECTRA
NUCLEAR MAGNETIC RESONANCE
NUCLEI
ODD-EVEN NUCLEI
PROGRESS REPORT
RESONANCE
SPECTRA
STABLE ISOTOPES
STRUCTURAL CHEMICAL ANALYSIS
THERMOCHEMICAL PROCESSES