Isolation and characterization of organometallic constituents from coal and coal liquefaction products. Final report
Technical Report
·
OSTI ID:6429288
Porphyrins in coal can yield useful geochemical parameters, although their role is not well understood. Raw coal was exhaustively extracted with a benzene-methanol azeotropic mixture. The extracts were fractionated by column chromatography, with n-hexane and toluene as eluents. The toluene fractions were demetallated with methanesulfonic acid to obtain metal-free porphyrin concentrates in dichloromethane. Fractions were developed on a simple thin layer chromatograph with various ratios of toluene and dichloromethane. Different tools such as visible spectrophotometry, high- and low-resolution mass spectrometry, HPLC, AAS and microprobe, etc. have been used to characterize these fractions. DPEP, Etio and Rhodo series of porphyrins as well as nickel and vanadyl porphyrins were found in these fractions. A discussion on porphyrin types in relation to coal age as well as genesis is to be given. 6 references, 8 figures, 4 tables.
- Research Organization:
- University of Southern California, Los Angeles (USA). School of Engineering
- DOE Contract Number:
- FG22-78ET12162
- OSTI ID:
- 6429288
- Report Number(s):
- DOE/ET/12162-T1; ON: DE85000022
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
01 COAL, LIGNITE, AND PEAT
010600* -- Coal
Lignite
& Peat-- Properties & Composition
ALCOHOLS
ALKANES
ALKYLATED AROMATICS
AROMATICS
BENZENE
CARBONACEOUS MATERIALS
CARBOXYLIC ACIDS
CHROMATOGRAPHY
COAL
COAL EXTRACTS
CORRELATIONS
DATA
ENERGY SOURCES
EXPERIMENTAL DATA
EXTRACTION
FOSSIL FUELS
FRACTIONATION
FUELS
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
HEXANE
HYDROCARBONS
HYDROXY COMPOUNDS
INFORMATION
LIQUID COLUMN CHROMATOGRAPHY
MASS SPECTROSCOPY
MATERIALS
METHANOL
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORIGIN
PORPHYRINS
RESEARCH PROGRAMS
SEPARATION PROCESSES
SOLVENT EXTRACTION
SPECTROPHOTOMETRY
SPECTROSCOPY
STRUCTURAL CHEMICAL ANALYSIS
THIN-LAYER CHROMATOGRAPHY
TOLUENE
010600* -- Coal
Lignite
& Peat-- Properties & Composition
ALCOHOLS
ALKANES
ALKYLATED AROMATICS
AROMATICS
BENZENE
CARBONACEOUS MATERIALS
CARBOXYLIC ACIDS
CHROMATOGRAPHY
COAL
COAL EXTRACTS
CORRELATIONS
DATA
ENERGY SOURCES
EXPERIMENTAL DATA
EXTRACTION
FOSSIL FUELS
FRACTIONATION
FUELS
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
HEXANE
HYDROCARBONS
HYDROXY COMPOUNDS
INFORMATION
LIQUID COLUMN CHROMATOGRAPHY
MASS SPECTROSCOPY
MATERIALS
METHANOL
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORIGIN
PORPHYRINS
RESEARCH PROGRAMS
SEPARATION PROCESSES
SOLVENT EXTRACTION
SPECTROPHOTOMETRY
SPECTROSCOPY
STRUCTURAL CHEMICAL ANALYSIS
THIN-LAYER CHROMATOGRAPHY
TOLUENE