Total Oxidation of Soot

Potassium- and strontium-substituted praseodymium manganate Pro,7Sro,2Ko,iMn03 perovskite-type catalysts were explored in supported form on ceramic foam filters for soot oxidation in typical conditions of a diesel engine [55]. Compared to bare soot oxidation reaction, the soot oxidation in the presence of these catalysts corresponded to a decrease of the Tinitiai value by 150 °C and Tfinai value by 100 °C. Besides the activity, another advantage of the system is the very good thermal stability. 

Lanthanum chromite perovskite is another catalyst deposited on silicon carbide and cordierite honeycombs with the aim to investigate the oxidation of soot [56]. The perovskite was synthesized using a combustion synthesis method and showed promising activity. 

---