The proportion of N-6 content at 70 °C shows a decreasing trend and decreases from 31.61, 34.5, 35.11, 36.48, and 37.63% to 28.41, 29.89, 30.96, 30.93, and 31.68%, mainly because of the oxidation reaction of pyridine across 86.642 kJ/mol under an environment below 70 °C; at 200 °C are 33.2, 33.35, 34.75, 34.18, and 34.44% in order and do not vary significantly.
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Reaction Mechanism of Nitrogen-Containing Heterocyclic Compounds Affecting Coal Spontaneous Combustion.
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