Targeting single coal macerals with density gradient centrifugation experiments
- Southern Illinois Univ., Carbondale, IL (United States)
Since density gradient centrifugation (DGC) techniques were introduced into coal science a little over ten years ago, continuous work has been done to separate and characterize coal macerals. To date, good separations of the liptinite, vitrinite, and inertinite maceral groups have been reported, as have separations of individual maceral types including, sporinite, resinite, cutinite, vitrinite, pseudovitrinite, semifusinite and fusinite from coal and of alginite, sporinite, and amorphous kerogen from petroleum source rocks. Most of the separations have been verified both petrographically and chemically. Chemical analysis including chromatography and spectroscopy of these separated materials show them to have diverse bulk chemistry and chemical structures. Most recently, reactivity and combustion studies on separations of both maceral groups and single macerals have shown significant differences between them. The results of all of these studies have shown the extreme heterogeneity of coal and has improved our ability to predict the behavior of coal in any process of interest.
- OSTI ID:
- 254702
- Report Number(s):
- CONF-940813--
- Country of Publication:
- United States
- Language:
- English
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