Investigation of the crosslinked macromolecular nature of bituminous coals. Final report

Technical Report · Tue Jan 01 04:00:00 EST 1980

OSTI ID:6694319

Peppas, N A

The main goals of this research program were to develop a theoretical framework and experimental protocols for the accurate analysis of macromolecular structures in bituminous coals and for the determination of important thermodynamic and macromolecular parameters which could assist in the classification of coal samples according to their swelling and extraction behavior. A statistical mechanical model and a thermodynamic theory were used for the description of crosslinked macromolecular structures in bituminous coals. Investigations included elucidation of the extraction behavior of coal samples with various solvents, analysis of the nature of the extracts, determination of the swelling behavior of coals in different solvents, analysis of the dynamic diffusion of vapors and swelling of coal particles, theoretical modelling of this behavior, determination of the glass transition (softening) temperature under inert atmospehre, and chromatographic analysis of the molecular weight distribution of coal extracts. Results are presented for seven coals in pyridine, THF, dioxan, benzene, methanol, ethanol and acetone.

• Research Organization: Purdue Univ., Lafayette, IN (USA). School of Chemical Engineering
• DOE Contract Number: FG22-78ET13379
• OSTI ID: 6694319
• Report Number(s): DOE/ET/13379-T1; ON: DE83001859
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010407* -- Coal & Coal Products-- Solvent Extraction-- (-1987)
010600 -- Coal
Lignite
& Peat-- Properties & Composition
ACETONE
ALCOHOLS
AROMATICS
AZINES
BENZENE
BITUMINOUS COAL
BLACK COAL
CARBONACEOUS MATERIALS
CHROMATOGRAPHY
CLASSIFICATION
COAL
COAL EXTRACTS
DIOXANE
ENERGY SOURCES
ETHANOL
EXTRACTION
FOSSIL FUELS
FUELS
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
HYDROXY COMPOUNDS
KETONES
MATERIALS
MATHEMATICAL MODELS
METHANOL
MOLECULAR STRUCTURE
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC SOLVENTS
PYRIDINE
PYRIDINES
SEPARATION PROCESSES
SOLVATION
SOLVENT EXTRACTION
SOLVENTS
SWELLING
THERMODYNAMICS