Swelling of coal extracts

Conference · Sun Jan 01 00:00:00 EST 1989

OSTI ID:5753062

Green, T K; Chamberlin, J M; Lopez-Froedge, L; Ball, J E

There has been a rapid growth in research that deals with the solvent swelling of coal. Much of this effort has been directed toward the application of modern polymer and network theories to coal, with the purpose of better understanding their network structures. One of the most fundamental parameters of a network structure is the average molecular weight between crosslinks. Several research groups have attempted to estimate this for coal from solvent swelling data and the Flory-Rehner equation. The equation incorporates both the Flory-Huggins theory of polymer solutions and the Gaussian elastic network theory. An important parameter embodied in the Flory-Huggins theory is the interaction parameter, /chi/. /chi/ is a thermodynamic parameter describing the energetics of the polymer-solvent interaction. Very few reliable methods have been developed to evaluate /chi/ for coal-solvent systems. It is the purpose of this research to develop a reliable method for its evaluation. The solvent swelling of coal extracts; utilizing benzene as the solvent, is discussed. 9 figs., 6 tabs.

• Research Organization: Western Kentucky Univ., Bowling Green, KY (USA). Dept. of Chemistry
• DOE Contract Number: FG22-88PC88924
• OSTI ID: 5753062
• Report Number(s): CONF-890902-13; ON: DE89016645
• Resource Relation: Conference: 198. American Chemical Society national meeting, Miami, FL, USA, 10-15 Sep 1989; Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
BENZENE
SORPTION
COAL EXTRACTS
SWELLING
AROMATICS
CROSS-LINKING
EQUATIONS
KINETICS
MOLECULAR STRUCTURE
SOLUBILITY
SOLVENT EXTRACTION
CHEMICAL REACTIONS
EXTRACTION
HYDROCARBONS
ORGANIC COMPOUNDS
POLYMERIZATION
SEPARATION PROCESSES
010600* - Coal
Lignite
& Peat- Properties & Composition