Penetrant transport in coal network structures between 35 degree C and 150 degree C

Conference · Mon Jan 01 04:00:00 EST 1990 · Preprints of Papers, American Chemical Society, Division of Fuel Chemistry; (USA)

OSTI ID:6859248

Olivares, J M; Peppas, N A ^[1]

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1. Purdue Univ., West Lafayette, IN (USA)

The dynamics of penetrant swelling of macromolecular coal systems can provide important information about the structure of the coal itself and its interactions with vapors and liquids. For example, it is possible to identify the thermodynamic state of the coal network. Inflections or dips in the time-sorption curve may be attributed to specific relaxations of the macromolecular coal system. If the coal is in the glassy state, one can determine whether the sorption is due to Fickian diffusion and/or due to relaxations of the macromolecular coal chains and estimate values of the diffusion coefficient and of the relaxation constants. Up to now only one research contribution from their laboratory (8) has examined the change in temperature as a method to decouple the diffusion and relaxation phenomena. In the present work they examine the transport of various penetrants in coal sections at moderate temperatures.

• OSTI ID: 6859248
• Report Number(s): CONF-900402--
• Conference Information: Journal Name: Preprints of Papers, American Chemical Society, Division of Fuel Chemistry; (USA) Journal Volume: 35:2
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600* -- Coal
Lignite
& Peat-- Properties & Composition
AZINES
CARBONACEOUS MATERIALS
COAL
CRYSTAL STRUCTURE
DATA
DATA ANALYSIS
DOCUMENT TYPES
ENERGY SOURCES
EXPERIMENTAL DATA
FOSSIL FUELS
FUELS
HETEROCYCLIC COMPOUNDS
INFORMATION
INTERACTIONS
MATERIALS
MEASURING INSTRUMENTS
MEASURING METHODS
MEDIUM TEMPERATURE
MICROSTRUCTURE
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PROCEEDINGS
PYRIDINE
PYRIDINES
SORPTIVE PROPERTIES
SURFACE PROPERTIES
SWELLING