Dimethyl sulphoxide-A solvent for the study of coals

Journal Article · Tue Jan 01 04:00:00 EST 1985 · Liq. Fuels Technol.; (United States)

DOI:https://doi.org/10.1080/07377268508915373· OSTI ID:5947051

Mallya, N; Zingaro, R A

Dimethyl sulphoxide (DMSO) has been found to be a very good solvent for the study of low rank coals. Chemical studies of a Texas lignite, its DMSO soluble fraction obtained under ambient conditions, the DMSO insoluble residue and its humic acids have been carried out. Physico-chemical techniques such as Fourier transform infrared spectrometry (FTIR), and /sup 13/C cross-polarization/magic angle spin (/sup 13/C CP/MAS) NMR spectrometry and chemical methods such as pertrifluoroacetic acid oxidation and the determination of acidic group concentrations have shown that the DMSO-soluble portion possesses a chemical structure which is similar to both that of the neat lignite and of the DMSO insoluble residue. The humic acids are highly aromatic and acidic in nature. Preliminary data obtained through the use of /sup 252/Cf plasma desorption mass spectrometry (/sup 252/Cf PDMS) suggests the existence of a common species in both the DMSO extract and the humic acids.

• Research Organization: Department of Chemistry and The Coal and Lignite Research Laboratories, Texas A and M University, College Station, Texas
• OSTI ID: 5947051
• Journal Information: Liq. Fuels Technol.; (United States), Journal Name: Liq. Fuels Technol.; (United States) Vol. 3:1; ISSN LFTED
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600* -- Coal
Lignite
& Peat-- Properties & Composition
ACETIC ACID
BROWN COAL
CARBONACEOUS MATERIALS
CARBOXYLIC ACIDS
CHEMICAL ANALYSIS
CHEMICAL COMPOSITION
CHEMICAL PROPERTIES
CHEMICAL REACTIONS
COAL
COAL EXTRACTS
COAL RANK
DMSO
ENERGY SOURCES
FLUORINE COMPOUNDS
FOSSIL FUELS
FOURIER TRANSFORMATION
FUELS
HALOGEN COMPOUNDS
HUMIC ACIDS
INFRARED SPECTRA
INTEGRAL TRANSFORMATIONS
LIGNITE
MAGNETIC RESONANCE
MASS SPECTROSCOPY
MATERIALS
MONOCARBOXYLIC ACIDS
NUCLEAR MAGNETIC RESONANCE
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXIDATION
PHYSICAL PROPERTIES
RESONANCE
SOLVENT PROPERTIES
SPECTRA
SPECTROSCOPY
STRUCTURAL CHEMICAL ANALYSIS
SULFOXIDES
TRANSFORMATIONS