Catalytic Performance of Several Metallic Oxides on The Elimination Reactions of NO

抄録

Catalytic performance of several metallic oxides, i.e., Al₂O₃, Cu₂O, CuO, Cr₂O₃, Fe₂O₃, Mn0₂, Ni₂O₃ and V₂0₅, and some of their partially-reduced samplesto the elimination reaction of NO in NO-CO-CO₂-N₂ and NO-N₂ systemswere examined using a flow-type reactor. The catalytic mechanism in the presentcondition was also discussed.
The experimental results show that most of the metallic oxide samplesgive a catalytic effect on NO/CO reaction with different extent. Fe₂O₃, CuO, Ni₂O₃ and Cr₂O₃ show large catalytic activities, while those of Cu₂O, MnO₂ and Al₂O₃ are quite small. Further, it was found that the pre-reduced Ni₂O₃ samplealso showed remarkable catalytic activity for direct decomposition of NO.