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The brown-coal/water system: Part 1, The effect of temperature on the evolution of water from brown coal

Authors
Journal
Fuel
0016-2361
Publisher
Elsevier
Publication Date
Volume
50
Issue
2
Identifiers
DOI: 10.1016/0016-2361(71)90009-3

Abstract

Abstract The vacuum desorption of water from brown coal has been investigated at temperatures from 30 °C to 120 °C. The amount of water which can be desorbed after prolonged evacuation to a constant weight increases with increasing temperature, and is accompanied by the evolution of carbon dioxide at temperatures above 60 °C. These effects are attributed to the thermal decomposition of functional groups in the coal. The relevance of these findings to the interpretation of moisture isotherms and analytical moisture determinations is discussed.

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