Effects of Spinel Oxide Combustion Catalysts on the Combustion Behavior and Secondary Atomization Mechanism of Gasoline Droplets.

The catalytic activity of Mg-based spinel oxide nanoparticles (NPs) on the combustion behavior of gasoline and their effects on the atomization behavior were determined by droplet scale combustion experiments. MgFe₂O₄, MgCo₂O₄ and MgMnO₃ spinel oxide NPs were produced by the sol-gel technique and doped into gasoline. The particles with the highest surface oxygen were MgCo₂O₄ and MgFe₂O₄ NPs, while the NPs with the largest surface area were MgCo₂O₄ NPs (517.8433 m²/g). The size of the flame envelope tends to shrink as the oxygen concentration of the particles rises, but an increase in their surface area tends to shorten ignition delay periods. MgFe₂O₄ NPs increased the flame temperature by 163°C compared to the pure gasoline. While MgFe₂O₄ and MgMnO₃ NPs increased the extinction time of gasoline, MgCo₂O₄ NPs decreased the severe time by about 75% with the violent micro-explosions they created. In this study, we focused on the production of spinel oxide agents customized for combustion with improved catalytic activity, high flammability, and different component designs, and the results showed that these particles can reduce the soot formation of conventional hydrocarbons. [ABSTRACT FROM AUTHOR]