Effects of low-temperature catalytic pretreatments on coal structure and reactivity in liquefaction
Low-temperature catalytic pretreatment is a promising approach to the development of an improved liquefaction process. This work is a fundamental study on effects of pretreatments on coal structure and reactivity in liquefaction. The main objectives of this project are to study the coal structural changes induced by low-temperature catalytic and thermal pretreatments by using spectroscopic techniques; and to clarify the pretreatment-induced changes in reactivity or convertibility of coals in the subsequent liquefaction. This report describes the progress of our work during the second quarterly period. Significant progress has been made in the spectroscopic characterization of fresh and THF-extracted samples of Wyodak subbituminous coals, catalytic and thermal low-temperature pretreatments in the absence and presence of hydrogen-donor and non-donor solvents, and the spectroscopic characterization of thermally and catalytically pretreated coals using cross-polarization magic angle spinning (CPMAS) solid-state {sup 13}C NMR, pyrolysis-GC-MS and FT-IR techniques.
- Research Organization:
- Pennsylvania State Univ., University Park, PA (United States). Dept. of Materials Science and Engineering
- Sponsoring Organization:
- DOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC22-91PC91042
- OSTI ID:
- 7233259
- Report Number(s):
- DOE/PC/91042-T1; ON: DE92018479
- Country of Publication:
- United States
- Language:
- English
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Effects of low-temperature catalytic pretreatments on coal structure and reactivity in liquefaction
Effects of low-temperature catalytic pretreatments on coal structure and reactivity in liquefaction. Technical progress report, October 1991--December 1991
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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
665100 -- Nuclear Techniques in Condensed Matter Physics -- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CARBON 13
CARBON ISOTOPES
CARBONACEOUS MATERIALS
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
CHROMATOGRAPHY
COAL
COAL LIQUEFACTION
CRYSTAL STRUCTURE
DECOMPOSITION
DOCUMENT TYPES
ENERGY SOURCES
EVEN-ODD NUCLEI
FOSSIL FUELS
FOURIER TRANSFORM SPECTROMETERS
FUELS
GAS CHROMATOGRAPHY
HEAT TREATMENTS
INFRARED SPECTROMETERS
ISOTOPES
LIGHT NUCLEI
LIQUEFACTION
MAGNETIC RESONANCE
MASS SPECTROSCOPY
MATERIALS
MEASURING INSTRUMENTS
MICROSTRUCTURE
NUCLEAR MAGNETIC RESONANCE
NUCLEI
PROGRESS REPORT
PYROLYSIS
RESONANCE
SEPARATION PROCESSES
SOLVENTS
SPECTROMETERS
SPECTROSCOPY
STABLE ISOTOPES
SUBBITUMINOUS COAL
TEMPERATURE RANGE
TEMPERATURE RANGE 0400-1000 K
THERMOCHEMICAL PROCESSES