Recent advances in performances and mechanisms of cerium-based oxide catalysts for catalytic combustion of soot particles released from diesel engines

With the increasingly strict environmental protection regulations and improvement of people’s awareness protection, serious pollution caused by soot particles from diesel vehicle exhaust has attracted attention. Catalytic purification technology is one most effective ways to eliminate research development highly catalysts key factors for determining application this technology. In recent years, cerium-based oxide have been widely used catalytic combustion due their excellent oxidation-reduction performance, suitable surface acidity, high oxygen storage/release capacity. The researches focusing on active essence in are helpful understand fundamental theories processes provide scientific guidances optimization existing design new-type catalysts. review, progress summarized, including single cerium catalyst modified rare earth metals, transition noble metals alkali (alkaline earth) metals. Meanwhile, reaction mechanisms above-mentioned also summarized. Finally, problems directions proposed prospected.