Due to the high cost and long lifecycle of manned Mars exploration missions, in-situ resource utilization technology, including Mg/CO₂ processes, has attracted increasing attention. At present, Mg/CO₂ engines face the challenges of long ignition delay, serious carbon deposition, and low combustion efficiency. The root of these challenges lies in the Mg/CO₂ combustion reaction. Therefore, based on an Mg-based powder prepared by mechanical mixing combined with ultrasonic dispersion, the effects of various nano-metal oxides (CuO, Fe₂O₃, MnO₂, MoO₃, and Bi₂O₃) on the ignition and combustion of Mg particles in CO₂ were studied through constant volume combustion experiments. It was found that MoO₃ undergoes the optimal covered-type of binding with Mg particles. The other oxides achieved embedded-type binding, of which MnO₂ binding was the worst. The enhanced ignition and combustion effects of Bi₂O₃ and CuO were best. Thermogravimetric analysis found that CuO and Bi₂O₃ improve combustion efficiency by lower ignition temperatures, inhibiting low-temperature oxidation reaction and increasing reaction ratio.

_{由于载人火星探测任务成本高、生命周期长，包括Mg/CO 2}工艺在内的资源原位利用技术越来越受到关注。目前，Mg/CO ₂发动机面临着燃延迟长、积碳严重、燃烧效率低等挑战。这些挑战的根源在于 Mg/CO ₂燃烧反应。_{因此，基于机械混合结合超声分散制备的镁基粉体，各种纳米金属氧化物（CuO、Fe 2} O ₃、MnO ₂、MoO ₃和Bi ₂ O ₃）的影响)通过定容燃烧实验研究了Mg颗粒在CO ₂中的着火和燃烧。发现MoO ₃经历了与Mg颗粒的最佳覆盖型结合。其他氧化物均实现嵌入型结合，其中MnO ₂结合最差。_{Bi 2} O ₃和CuO的强化点火燃烧效果最好。热重分析发现CuO和Bi ₂ O ₃通过降低着火温度、抑制低温氧化反应和提高反应率来提高燃烧效率。