Chemical structure analysis of coal hydrogenation products: distribution of structural parameters and application of /sup 13/C NMR to structural analysis. [6 refs]
In order to study the chemical structure of coal, Yubari coal was subjected to mild hydrogenation and converted to solvent-soluble products. The reaction time was changed from 26 to 206 min. The solvent-soluble product was extracted with n-hexane, benzene, and pyridine successively, which resulted in 5 fractions; oil-1, oil-2, asphaltene, pyridine solubles-1, and pyridine solubles-2. Regarding these hydrogenation reaction products ultimate analysis, high resolution NMR spectroscopy, and molecular weight measurement were carried out and the chemical reaction in the Yubari coal in the course of hydrogenation was followed. From the above structural analysis of the average structural unit was conducted. This was followed by fractionation of the component oil-2 which corresponding to monomers, by GPC and each fraction was measured for /sup 1/H-NMR, /sup 13/C-NMR, GPC, VPO, etc., and the distribution of structural parameters was studied. The findings were correlated and the chemical structure of Yubari coal was tentatively set forth.
- Research Organization:
- Government Industrial Development Lab., Hokkaido, Japan
- OSTI ID:
- 7340611
- Journal Information:
- Am. Chem. Soc., Div. Fuel Chem., Prepr.; (United States), Vol. 20:3; Conference: 170. American Chemical Society national meeting, Chicago, IL, USA, 24 Aug 1975; Other Information: See CONF-750806--P1
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
COAL
CHEMICAL COMPOSITION
COAL LIQUIDS
MOLECULAR WEIGHT
HYDROGENATION
PYRIDINES
SOLVENT EXTRACTION
AZINES
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
ENERGY SOURCES
EXTRACTION
FOSSIL FUELS
FUELS
HETEROCYCLIC COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
SEPARATION PROCESSES
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