High Performance Catalysts BaCoO₃−CeO₂ Prepared by the One-Pot Method for NO Direct Decomposition

NO direct decomposition is the most promising but also the most challenging approach for nitrogen oxides mitigation. Developing high performance catalysts is greatly desirable to promote the application of this technology. The present catalysts BaCoO₃−CeO₂ prepared by the one-pot method show superior activity towards NO direct decomposition, robust oxygen resistance and decent durability. The NO conversion to N₂ of 5 %BaCoO₃−CeO₂ catalyst is 57.2 %, 70.1 % and 75.6 % at 700, 750 and 800 °C, respectively. It still maintains at 54.3 % even in the presence of 10 vol % O₂ at 800 °C and is stable in 1 vol % O₂ at least for 24 h at 750 °C. Such impressive performance is ascribed to the unique properties of CeO₂, strong interaction between perovskite and CeO₂, and microstructure of the catalysts rendered by the citric acid-nitrate one-pot method.