Effects of low-temperature catalytic pretreatments on coal structure and reactivity in liquefaction
This work is a fundamental study of catalytic pretreatments as a potential preconversion step to low-severity liquefaction. The ultimate goal of this work is to provide the basis for the design of an improved liquefaction process and to facilitate our understanding of those processes that occur when coals are initially dissolved. The main objectives of this project are to study the effects of low-temperature pretreatments on coal structure and their impacts on the subsequent liquefaction. The effects of pretreatment temperatures, catalyst type, coal rank and influence of solvent will be examined. We have made significant progress in the following four aspects during this quarterly period: (1) influence of drying and oxidation of coal on the conversion and product distribution in catalytic liquefaction of Wyodak subbituminous coal using a dispersed catalyst; (2) spectroscopic characterization of dried and oxidized Wyodak coal and the insoluble residues from catalytic and thermal liquefaction; (3) the structural alteration of low-rank coal in low-severity liquefaction with the emphasis on the oxygen-containing functional groups; and (4) effects of solvents and catalyst dispersion methods in temperature-programmed and non-programmed liquefaction of three low-rank coals.
- 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:
- 6765242
- Report Number(s):
- DOE/PC/91042-T4; ON: DE93014941
- 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, August 1992--July 1992
Related Subjects
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
010600 -- Coal
Lignite
& Peat-- Properties & Composition
ALKANES
AROMATICS
CARBONACEOUS MATERIALS
CATALYSTS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHROMATOGRAPHY
COAL
COAL LIQUEFACTION
COAL PREPARATION
CYCLOALKANES
DATA
DECALIN
DECOMPOSITION
DOCUMENT TYPES
DRYING
ENERGY SOURCES
EXPERIMENTAL DATA
FOSSIL FUELS
FOURIER TRANSFORMATION
FUELS
GAS CHROMATOGRAPHY
HEAT TREATMENTS
HYDROAROMATICS
HYDROCARBONS
INFORMATION
INFRARED SPECTRA
INTEGRAL TRANSFORMATIONS
KINETICS
LIQUEFACTION
MASS SPECTROSCOPY
MATERIALS
NMR SPECTRA
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC SOLVENTS
PROGRESS REPORT
PYROLYSIS
REACTION KINETICS
SEPARATION PROCESSES
SOLVENTS
SPECTRA
SPECTROSCOPY
STRUCTURAL CHEMICAL ANALYSIS
SUBBITUMINOUS COAL
TETRALIN
THERMOCHEMICAL PROCESSES
TRANSFORMATIONS