Guest molecules in coal. Fifth quaraterly report, October 1, 1985-December 31, 1985
Tandem mass spectra were obtained for the THF-1 extract of the potassium-crown ether-treated Illinois No. 6 coal. The results showed that polymethylene compounds were present in the extract. Further investigations of the extract by chemical ionization mass spectrometry have identified these polymethylene compounds as a homologous series of alkyl napthalenes, and alkyl tetralins with the alkyl chain extending up to 14 carbon atoms. As indicated in the earlier report (Third Quarterly Report - DOE), a total of 52 and 78% of coal is solubilized into either tetrahydrofuran (THF) or aqueous alkali fraction after the third and fourth potassium-crown ether (K-CE) treatments, respectively. In this quarter, the soluble fractions and the insoluble residue after every K-CE treatment were subjected to microanalysis. The results will allow us to determine the elemental balance for each K-CE reaction. The alkali soluble fraction was subjected to ultrafiltration to fractionate the coal into different molecular weight ranges. For further analysis methylation was also done on the coal samples. 1 fig., 3 tabs.
- Research Organization:
- Purdue Univ., Lafayette, IN (USA)
- DOE Contract Number:
- FG22-84PC70792
- OSTI ID:
- 6170308
- Report Number(s):
- DOE/PC/70792-T5; ON: DE86006386
- Country of Publication:
- United States
- Language:
- English
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Guest molecules in coal: Final technical report
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Related Subjects
010407* -- Coal & Coal Products-- Solvent Extraction-- (-1987)
010600 -- Coal
Lignite
& Peat-- Properties & Composition
ALCOHOLS
ALKALI METALS
CARBONACEOUS MATERIALS
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
COAL
COAL EXTRACTS
DATA
ELEMENTS
ENERGY SOURCES
EXPERIMENTAL DATA
EXTRACTION
FILTRATION
FOSSIL FUELS
FRACTIONATION
FUELS
FURANS
GLYCOLS
HETEROCYCLIC COMPOUNDS
HYDROXY COMPOUNDS
INFORMATION
INFRARED SPECTRA
MATERIALS
METALS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC POLYMERS
POLYETHYLENE GLYCOLS
POLYMERS
POTASSIUM
RESEARCH PROGRAMS
RESIDUES
SEPARATION PROCESSES
SOLUBILITY
SOLVENT EXTRACTION
SPECTRA
STRUCTURAL CHEMICAL ANALYSIS
TETRAHYDROFURAN
ULTRAFILTRATION