Adding copper nitrate Cu(NO₃)₂ is known to activate the oxidation of coal and lignite. In the present work, the change in its activating properties with increase in the heating rate is studied. The Cu(NO₃)₂ is first dissolved in a 50/50 (by volume) mixture of ethyl alcohol and water. Then it is applied to the fuel by steeping, to a content of 5 wt %. Activated oxidation is studied by thermal analysis, with different heating rates (2.5, 10, 20, and 40°C/min) in the temperature range 25–1000°C, at atmospheric pressure. With increase in heating rate, the catalytic effect of the additive is intensified: the initial (30–115°C) and final (85–180°C) oxidation temperatures fall, with increase in the maximum reaction rate. Mass-spectrometric analysis of the gaseous oxidation products shows that, in the presence of copper nitrate, increase in the heating rate leads to greater CO₂ emission, with shorter oxidation time. The dependence of the activation energy on the degree of fuel conversion is determined by the Friedman method. The decrease in the mean activation energy when using Cu(NO₃)₂ is ~14 kJ/mol for lignite and ~35 kJ/mol for coal.

已知添加硝酸铜Cu（NO ₃）₂可以活化煤和褐煤的氧化。在目前的工作中，研究了其活化特性随加热速率的增加而变化。Cu（NO ₃）₂首先将其溶于50/50（体积）的乙醇和水的混合物中。然后通过浸渍将其施加到燃料上，使其含量为5 wt％。通过热分析研究活化的氧化，在大气压下在25–1000°C的温度范围内以不同的加热速率（2.5、10、20和40°C / min）进行研究。随着加热速率的提高，添加剂的催化作用增强：初始氧化温度（30–115°C）和最终氧化温度（85–180°C）随着最大反应速率的增加而降低。气相氧化产物的质谱分析表明，在存在硝酸铜的情况下，加热速率的增加导致更高的CO ₂排放，氧化时间短。活化能对燃料转化程度的依赖性通过弗里德曼方法确定。当使用Cu（NO ₃）_2时，褐煤的平均活化能降低为〜14 kJ / mol，煤的降低为〜35 kJ / mol。