Multiscale characterization of microstructural reconfiguration induced by oxidation in lignite from the Lingquan mining colliery.

The average size of the aromatic layer of oxidized lignite L a showed a trend of first increasing and then decreasing, as shown in Fig. 14 (c).

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The number of aromatic layer M c , stacking height of aromatic layer L c , and coalification degree P of oxidized lignite show a decreasing trend with the increase of oxidation temperature, as shown in Fig. 14 (a)(b)(d).

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The spacing of aromatic layer d 002 of oxidized lignite in Lingquan Mine shows an increasing trend with the increase of oxidation temperature, as shown in Fig. 14 (a).

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