Application of unconventional solvents and /sup 252/Cf-plasma desorption spectrometry to studies of coal. Final report, February 1982-August 1985

Technical Report · Sun Dec 01 04:00:00 EST 1985

OSTI ID:5626519

Zoeller, J H; Zingaro, R A; Macfarlane, R D

Pure organic compounds and coal extracts were studied by the technique of Californium-252 Plasma Desorption Mass Spectrometry (PDMS), in which ions are devolatilized in a plasma formed by an impacting fission fragment. Patterns of parent and fragment ions identified in the spectra of pure compounds facilitate the identification of families of aromatic, hydroaromatic and phenolic constituents in the spectra of coal extracts. Other categories of ions identified include light carbonium ions, recombinant ions, and four types of carbonaceous ions. The carbonaceous ions are polymers based on the C(1), C(2), and C(6)H(2) repeating units, and their occurrence in PDMS spectra is related to substrate aromaticity. The dimethyl sulfoxide extracts of two lignites were solvent partitioned into four soluble fractions of very diverse chemistry. The hexane-soluble bitumen fraction is a concentrate of fossil terpenes. The asphaltene-preasphaltene fraction shows hydroaromatic patterns in its PDMS spectrum. The DMSO-soluble, tetrahydrofuran-insoluble fraction exhibits aromaticity and fixed-carbon value comparable to that of the DMSO-insoluble residue, and retains organic-bound cations. Aromatic and etheric functionalities display a wide spectrum of reactivity towards ruthenium tetroxide.

• Research Organization: Texas A and M Univ., College Station (USA). Dept. of Chemistry
• OSTI ID: 5626519
• Report Number(s): PB-86-174364/XAB
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600* -- Coal
Lignite
& Peat-- Properties & Composition
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
CALIFORNIUM 252
CALIFORNIUM ISOTOPES
CARBONACEOUS MATERIALS
CHARGED PARTICLES
COAL
ENERGY SOURCES
EVEN-EVEN NUCLEI
FOSSIL FUELS
FUELS
HEAVY NUCLEI
IONS
ISOTOPES
MASS SPECTROSCOPY
MATERIALS
MOLECULAR STRUCTURE
NUCLEI
ORGANIC COMPOUNDS
RADIOISOTOPES
SOLVENTS
SPECTROSCOPY
YEARS LIVING RADIOISOTOPES