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HERO ID
3578014
Reference Type
Journal Article
Title
Study of the interaction of aromatic compounds with coals by inverse liquid chromatography
Author(s)
Kaneko, H; Morino, M; Takanohashi, T; Iino, M
Year
1996
Is Peer Reviewed?
Yes
Journal
Energy and Fuels
ISSN:
0887-0624
EISSN:
1520-5029
Publisher
AMER CHEMICAL SOC
Location
WASHINGTON
Volume
10
Issue
4
Page Numbers
1017-1021
Language
English
DOI
10.1021/ef960038q
Web of Science Id
WOS:A1996UY20500022
URL
http://
://WOS:A1996UY20500022
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Abstract
Inverse liquid chromatography using the extraction residue which was obtained from the extraction with a carbon disulfide-N-methyl-2-pyrrolidinone (CS2-NMP) mixed solvent at room temperature was carried out. The capacity factors (the increment of the elution volume of probe relative to the elution volume of the carrier solvent) of various aromatic compounds were higher than that of a carrier solvent used and increased with an increase in the size of condensed aromatic rings, suggesting that the separation is carried out by the sorption mechanism and not by size exclusion. The capacity factors of substituted anthracenes (methyl-, ethyl-, tert-butyl, phenyl-, and diphenylanthracenes) were found to decrease with an increase in their bulkiness, suggesting that the substituted groups on an anthracene ring hinder the access of the anthracenes to the interacting sites in coals. The extraction residue with a higher extraction yield showed a larger difference in the capacity factors between benzene, naphthalene, and anthracene than that with lower extraction yield from the same coal. The column packed with coal extract also gave similar elution orders for aromatics as those for the residues, suggesting that in addition to the interactions between aromatic compound-coal pore surface, those between aromatic compound-coal bulk, i.e., diffusion (absorption) into coal bulk, are important, since the extract fraction does not seem to have much of physical pores.
Tags
•
OPPT_N-methylpyrrolidone (NMP)_C. Engineering
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OPPT_N-methylpyrrolidone (NMP)_D. Exposure
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•
OPPT_N-methylpyrrolidone (NMP)_E. Fate
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