The oxidation of lignite and bituminous coal samples modified by 5 wt% (in terms of dry salt) addition of copper salts Cu(NO₃)₂, CuSO₄, and Cu(CH₃COO)₂ was studied. The samples’ reactivity was studied by thermogravimetry within a temperature range of 45–600 °C at a heating rate of 2.5 °C/min in an oxidizing environment. The introduction of activating additives has resulted in a significant decrease in the temperature of intense oxidation onset (ΔT_i = 20/94 °C), in a reduction in the sample residence time in the volatile matter release region (Δt_e = 2/22 min) and the total duration of the coal combustible mass oxidation (Δt_f = 8/14 min). The Friedman method was used to calculate the activation energy values for the oxidation process of the modified samples. The maximum change in activation energy values was observed for the bituminous coal sample. The possible mechanism behind the action of the copper-salt additives, which activate the oxidation of lignite and bituminous coal, is discussed. According to the data of mass spectrometric analysis, the concentration of NO_x in the reaction products decreases as the temperature of the activated oxidation process is shifted towards the low-temperature region.

研究了通过添加5 wt％（以干盐计）的铜盐Cu（NO ₃）₂，CuSO ₄和Cu（CH ₃ COO）₂改性的褐煤和烟煤样品的氧化。在45-600°C的温度范围内，在氧化环境中以2.5°C / min的升温速率，通过热重法研究了样品的反应性。活性添加剂的引入大大降低了强烈氧化的起始温度（ΔT _i  = 20/94°C），减少了样品在挥发性物质释放区域的停留时间（Δt _e  = 2） / 22分钟）和煤可燃物质氧化的总持续时间（Δt _f  = 8/14分钟）。弗里德曼方法用于计算改性样品氧化过程的活化能值。对于烟煤样品，观察到活化能值的最大变化。讨论了激活铝盐添加剂激活褐煤和烟煤氧化的可能机理。根据质谱分析的数据，随着活化的氧化过程的温度向低温区域移动，反应产物中的NO _x浓度降低。