This study proposes a process of reusing waste aluminum scraps and greenhouse gas CO₂ as chemical feedstocks for producing CO gas fuel and γ-LiAlO₂. The non-isothermal kinetics shows that the oxidation of aluminum scraps in CO₂ is inhibited once the passive alumina layer being formed at aluminum surface. With the addition of alkali carbonate, the CO generation rate is enhanced depending on the composition of carbonate salt and CO₂ concentration. By correlating the thermal stability characteristics of the carbonate with the CO generation features, it is revealed that the as-formed alumina layer is firstly dissolved in the molten salt by means of basic corrosion mechanism and then followed by solid-state reaction with the alkali-metal oxide. By adding Li₂CO₃, the conversion rate of aluminum scraps can be significantly improved and is completed in 1 h.

本研究提出回用废水铝屑和温室气体CO的过程₂作为制造CO气体燃料和γ-LiAlO化学原料₂。非等温动力学表明，一旦在铝表面形成钝化氧化铝层，便会抑制铝屑在CO ₂中的氧化。通过添加碱金属碳酸盐，根据碳酸盐和CO ₂的组成，可提高CO的生成速度浓度。通过将碳酸盐的热稳定性特征与CO生成特征相关联，发现形成的氧化铝层首先通过碱性腐蚀机理溶解在熔融盐中，然后与碱进行固相反应。金属氧化物。通过添加Li ₂ CO ₃，可以显着提高铝屑的转化率，并在1小时内完成。