Thermal oxidation reaction of paraffin with O₂ and N₂O under different pressures

Thermal reaction of paraffin with oxidizers could provide valuable information concerning the regression rate and combustion efficiency of paraffin-based fuels. In this paper, thermogravimetric–differential scanning calorimetry experiments were carried out for paraffin under O₂ and N₂O atmosphere, and the thermal reaction kinetics of paraffin under different pressures of O₂ and N₂O was estimated through the non-isothermal measurements and model-free isoconversional methods. The results show that the oxidation of paraffin under O₂ and N₂O atmosphere represents the multistage reaction process; the obtained activation energy (E_a) is much close by using different model-free isoconversional methods, and paraffin is easier to be oxidized under O₂ because of the lower E_a and lower reaction temperature; Pressure plays a positive effect on the oxidation of paraffin, especially under O₂ atmosphere.