The vibrational kinetics model of the dissociation process CO₂ + M → CO + O + M based on the two-modes (symmetric–asymmetric) approximation is presented. The model has shown to produce the effective dissociation rate of CO₂ under conditions of thermal equilibrium close to that obtained experimentally. Results of the 0D calculations of the CO₂ conversion in non-equilibrium conditions of a microwave plasma discharge are discussed. The chemical energy efficiency obtained in the calculations at translational-rotational temperature 300K and degree of ionization 10⁻⁵ is between 42 and 56% depending on the assumptions. The efficiency is found to reduce and eventually vanish at elevated temperatures.

提出了基于两种模式（对称-不对称）近似的解离过程 CO ₂ + M → CO + O + M的振动动力学模型。该模型已表明在接近实验获得的热平衡条件下产生 CO ₂的有效解离速率。讨论了在微波等离子体放电的非平衡条件下CO ₂转化的 0D 计算结果。根据假设，在平移-旋转温度300K和电离度10 ^-5的计算中获得的化学能效率在42%和56%之间。发现效率在升高的温度下降低并最终消失。