Abstract
Publisher Summary This chapter discusses the influence of low-temperature treatment of Kansk–Achinsk lignite on its composition, structure, and reactivity for liquefaction. The elucidation of correlations between structural characteristics of coal and its reaction ability is very important problem in coal science. The structure of coal can be varied by its thermal treatment even at mild conditions. It is known the treatment of coal at 200°C changes the total concentration of oxygen and its relative content in different types of functional groups of coal. The most significant effects are observed for law-rank coals with high concentration of oxygen. Because coal-liquefaction processes are accompanied by the rupture of oxygen-containing bonds, the variation of these groups concentration changes the coal conversion degree.
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