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

Technical Report · Mon Apr 16 04:00:00 EDT 1990

DOI:https://doi.org/10.2172/10185164· OSTI ID:10185164

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, Washington, DC (United States)
• DOE Contract Number: FG22-89PC89785
• OSTI ID: 10185164
• Report Number(s): DOE/PC/89785--T1; ON: DE92041298
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600
COAL
ELECTRON SPIN RESONANCE
EXPERIMENTAL DATA
INFRARED SPECTRA
NUCLEAR MAGNETIC RESONANCE
PROGRESS REPORT
PROPERTIES AND COMPOSITION
RADICALS