Hydrogen bonding in asphaltenes and coal liquids. Quarterly report, November 1, 1981-January 31, 1982
The gas chromatographic retention charateristics of a variety of underivatized phenols have been studied using Superox-20M coated on fused silica. The relative retention times of these compounds were measured at 160, 150, and 140/sup 0/ in order to determine the effect of operating temperature on relative retention. This information is used to predict relative retention times of phenols for which we had no standards. The linear temperature programmed retention indices of these same phenols were measured. The retention information is discussed relative to the mechanism of phenol separation on this stationary phase, and to the steric, inductive, and resonance effects of the substituents. Linear free energy relationships between the logarithm of the ratio of the activity coefficients of phenol to substituted (calculated from relative retention data) and the chromatographic substituent constant, sigma/sub c/, have been determined for some phenols on Supernox-20M.
- Research Organization:
- Duquesne Univ., Pittsburgh, PA (USA). Dept. of Chemistry
- DOE Contract Number:
- AC22-80PC30252
- OSTI ID:
- 5225826
- Report Number(s):
- DOE/PC/30252-T6; ON: DE82010524
- Country of Publication:
- United States
- Language:
- English
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Part I: Identification and geochemical significance of some aromatic components of coal. Part II: Basic studies on the aging of coal-derived liquids: phenols
Hydrogen bonding in asphaltenes and coal liquids. Quarterly report for the period May 1, 1982-July 31, 1982
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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
AGING
AROMATICS
CHALCOGENIDES
CHEMICAL ANALYSIS
CHROMATOGRAPHY
COAL LIQUIDS
DATA
EXPERIMENTAL DATA
FLUIDS
GAS CHROMATOGRAPHY
HIGH TEMPERATURE
HYDROXY COMPOUNDS
INFORMATION
LIQUIDS
MINERALS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PHENOLS
QUANTITATIVE CHEMICAL ANALYSIS
RESEARCH PROGRAMS
SEPARATION PROCESSES
SILICA
SILICON COMPOUNDS
SILICON OXIDES
TEMPERATURE DEPENDENCE
TIME DEPENDENCE