The single electron chemistry of coals, January 1, 1990--March 30, 1990

Technical Report · Mon Apr 16 00:00:00 EDT 1990

DOI:https://doi.org/10.2172/6945589· OSTI ID:6945589

Larsen, J W; Flowers, II, R A

The Wyodak, Upper Freeport and Pocahontas No. 3 samples containing DPPD display a decrease in spin density as compared to the starting coals. Coincident with this decrease is a loss or decrease of the narrow inertinite signal in the esr spectrum of these coals. The Pittsburgh No. 8 coal sample containing DPPD also displays a loss of spin density as compared to the starting coal but there is no change in the esr spectrum. These results compare well with earlier work involving 4-vinylpyridine and the same coal samples. We discovered the presence of poly(4-vinylpyridine) in our coal samples and a concurrent loss of inertinite radical density. It is possible that the inertinite radicals may initiate the polymerization or in the present work may abstract hydrogen from DPPD. No C=N stretch was displayed in the IR spectrum to substantiate this claim.

• Research Organization: Lehigh Univ., Bethlehem, PA (United States). Dept. of Chemistry
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: FG22-89PC89785
• OSTI ID: 6945589
• Report Number(s): DOE/PC/89785-T1; ON: DE92041298
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL
ELECTRON SPIN RESONANCE
NUCLEAR MAGNETIC RESONANCE
EXPERIMENTAL DATA
INFRARED SPECTRA
PROGRESS REPORT
RADICALS
CARBONACEOUS MATERIALS
DATA
DOCUMENT TYPES
ENERGY SOURCES
FOSSIL FUELS
FUELS
INFORMATION
MAGNETIC RESONANCE
MATERIALS
NUMERICAL DATA
RESONANCE
SPECTRA
010600* - Coal
Lignite
& Peat- Properties & Composition