Enhanced coal liquefaction by pyrolysis in supercritical fluids. Quarterly progress report, April-June 1986. [1,3 diphenyl propane, phenethyl phenyl ether]
This research program involves a fundamental investigation of a novel coal liquefaction process that combines pyrolysis and supercritical-fluid solvent extraction. The experimental work consists of determining: (1) coal pyrolysis reaction pathways, kinetics and mechanisms; (2) equilibrium solubilities of coal-related compounds (e.g., primary liquefaction products) in supercritical water and solvent mixtures containing selected primary liquefaction products with supercritical water. Experiments involving model coal compounds will be accomplished to determine the fundamental factors associated with the mild pyrolysis of coal in supercritical fluids with the aim of developing optimal conversion strategies for actual coals. The thermolysis of phenethyl phenyl ether (PPE) and diphenyl propane (DPP) was studied in both neat solution and in water. The reaction network for PE in water exhibits an additional pathway in water. This pathway is the solvolysis of PPE to produce phenethyl alcohol and phenol. The product spectrum obtained for neat phyolysis of DPP was identical to that obtained for thermolysis in water. Thus the additional solvolysis pathway is not observed for this model coal compound reacting in water. 3 figs.
- Research Organization:
- Delaware Univ., Newark (USA). Dept. of Chemical Engineering
- DOE Contract Number:
- FG22-85PC80509
- OSTI ID:
- 5516278
- Report Number(s):
- DOE/PC/80509-T3; ON: DE86013959
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
AROMATICS
PYROLYSIS
PYROLYSIS PRODUCTS
COAL
SOLVENT EXTRACTION
COAL LIQUEFACTION
OPTIMIZATION
ETHERS
WATER
SOLVENT PROPERTIES
SUPERCRITICAL STATE
CHEMICAL REACTION KINETICS
HIGH TEMPERATURE
RESEARCH PROGRAMS
SOLVOLYSIS
STRUCTURAL MODELS
TIME DEPENDENCE
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
DECOMPOSITION
ENERGY SOURCES
EXTRACTION
FOSSIL FUELS
FUELS
HYDROGEN COMPOUNDS
KINETICS
LIQUEFACTION
MATERIALS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
OXYGEN COMPOUNDS
REACTION KINETICS
SEPARATION PROCESSES
THERMOCHEMICAL PROCESSES
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction
010406 - Coal & Coal Products- Pyrolysis & Cracking- (-1987)