Enhanced coal liquefaction by low-severity catalytic reactions: Technical progress report for the period June to August 1987
The objective of this investigation is to examine the potential and limitations of temperature-staged catalytic liquefaction. Experiments have been planned to examine the chemical reactions which occur during the low- and high-severity stages, the effects of coal rank and process conditions, the function of catalyst and influence of solvent donor capability. A bituminous coal and a lignite were subjected to temperature-staged liquefaction in the presence or model compound solvents and a recycle-solvent. Reactions were conducted in the absence and presence of a molybdenum catalyst using either hydrogen or nitrogen atmospheres. It was found that the catalyst, in general, promoted total conversion under hydrogen, but in the dihydrophenanthrene + catalyst + hydrogen system the catalyst significantly reduced the yield of oil. Evidence suggests that the catalyst interacts in a complicated way with both the reaction atmosphere and solvent. 11 refs., 8 figs., 4 tabs.
- Research Organization:
- Pennsylvania State Univ., University Park (USA)
- DOE Contract Number:
- FG22-86PC90910
- OSTI ID:
- 5994913
- Report Number(s):
- DOE/PC/90910-4; ON: DE88001663
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
ALKALINE EARTH METAL COMPOUNDS
ALKALINE EARTH METALS
ATMOSPHERES
BITUMINOUS COAL
BLACK COAL
BROWN COAL
CALCIUM
CALCIUM COMPOUNDS
CALCIUM SULFATES
CARBONACEOUS MATERIALS
CATALYSTS
CATALYTIC EFFECTS
COAL
COAL LIQUEFACTION
CONTROLLED ATMOSPHERES
DATA
ELEMENTS
ENERGY SOURCES
EXPERIMENTAL DATA
FOSSIL FUELS
FUELS
HYDROGEN
INFORMATION
LIGNITE
LIQUEFACTION
MATERIALS
METALS
MOLYBDENUM
NITROGEN
NONMETALS
NUMERICAL DATA
ORGANIC SOLVENTS
OXYGEN COMPOUNDS
RECYCLING
RESIDUES
SOLVENTS
SULFATES
SULFUR COMPOUNDS
TEMPERATURE EFFECTS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENTS