Electron spin resonance of isolated coal macerals

Conference · Tue Jan 01 04:00:00 EST 1985

OSTI ID:5474602

Silbernagel, B G; Gebhard, L A; Thomann, H; Dyrkacz, G R; Bloomquist, C A.A.

Electron Spin Resonance (ESR) and Electron Spin Echo (ESE) studies of carbon radicals in coal macerals isolated by isopycnic centrifugation techniques reveal significant changes in linewidths and shapes, microwave saturation properties, and relaxation of the radicals with changing maceral class and rank. These properties are discussed in terms of the molecular structure of the coal. 7 refs., 4 figs.

• Research Organization: Exxon Research and Engineering Co., Annandale, NJ (USA); Argonne National Lab., IL (USA)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5474602
• Report Number(s): CONF-851003-8; ON: DE85013846
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600* -- Coal
Lignite
& Peat-- Properties & Composition
CARBONACEOUS MATERIALS
CENTRIFUGATION
COAL
COAL RANK
DATA
DENSITY
ELECTRON SPIN RESONANCE
ENERGY SOURCES
EXPERIMENTAL DATA
FOSSIL FUELS
FUELS
INFORMATION
MACERALS
MAGNETIC RESONANCE
MATERIALS
MOLECULAR STRUCTURE
NUMERICAL DATA
PHYSICAL PROPERTIES
RADICALS
RESONANCE
SEPARATION PROCESSES
SPIN ECHO