Solvent swelling of coal and coal macerals

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Publication Type thesis
School or College College of Mines & Earth Sciences
Department Fuels Engineering
Author Kopp, Vance R
Title Solvent swelling of coal and coal macerals
Date 1987-03-27
Description Selected coals and coal macerals were swollen in organic solvents. A volumetric swelling method was employed using a wide range of solvents. This method was chosen over the gravimetric technique as it is more rapid and does not require corrections for pore-filling. For bituminous coals, swelling decreased in the solvent order, pyridine> THF> acetone> ethanol> CH2CL.2> methanol> toluene> cyclohexane> H2O. A basic thermodynamic study of coal-solvent interactions was performed. The solubility parameter and donor-acceptor theories were applied to correlate swelling behavior. Neither of these theories adequately describes the swelling behavior of coals. Combining the solubility parameter theory and coal-solvent interactions provides a reasonable description of the swelling behavior. The effect of the solvents is to solvate the coal matrix and fill and expand the micropores of the coal. Solvents of suitable polarity cleave secondary hydrogen bonds between the polar groups in the coal, decreasing the crosslink density and increasing the flexibility of the coal macromolecule. Other solvents with good solubility parameters swell the coal without disrupting the secondary bonds.
Type Text
Publisher University of Utah
Subject Coal preparation
Dissertation Institution University of Utah
Dissertation Name MS
Language eng
Relation is Version of Digital reproduction of "Solvent swelling of coal and coal macerals" J. Willard Marriott Library Special Collections TP 7.5 1987 K66
Rights Management © Vance R. Kopp, To comply with copyright, the file for this work may be restricted to The University of Utah campus libraries pending author permission.
Format Medium application/pdf
Format Extent 40,331 bytes
Identifier us-etd2,141220
Source Original: University of Utah J. Willard Marriott Library Special Collections
Conversion Specifications Original scanned on Kirtas 2400 and saved as 400 ppi 8 bit grayscale jpeg. Display image generated in Kirtas Technologies' OCR Manager as multiple page pdf, and uploaded into CONTENT dm.
ARK ark:/87278/s6g16fd7
Setname ir_etd
Date Created 2012-04-23
Date Modified 2017-10-02
ID 193458
Reference URL