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Liquefaction of partially dried and oxidized coals: 2. Coal characteristics

โœ Scribed by Donald C. Cronauer; Raffaele G. Ruberto; Robert G. Jenkins; Alan Davis; Paul C. Painter; David S. Hoover; Michael E. Starsinic; David Schlyer

Publisher
Elsevier Science
Year
1983
Tongue
English
Weight
985 KB
Volume
62
Category
Article
ISSN
0016-2361

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โœฆ Synopsis

Samples of Belle

Ayr (WY) subbituminous and Powhatan No. 5 mine (Pittsburgh Seam) bituminous coals were dried with gases including nitrogen, air and nitrogen/air mixture at temperatures essentially from ambient to 200ยฐC as part of a study to measure liquefaction behaviour. While the oxygen uptake of the subbituminous coal was up to 3 wt% and that of the bituminous coal was up to 8 wt%, the physical and chemical characteristics of both coals appeared to undergo only minor changes during treatment. However, CPAA oxygen analysis showed an apparent reaction of water with the coal, and FT-i.r. spectral results showed the formation of carbonyls and carboxylic acids with an indication of the formation of ethers.

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