Abstract
Direct catalytic decomposition of NO has the advantages of being a simple process, producing no secondary pollution, and being good for the economy, which has attracted extensive research in recent years. Perovskite-type mixed oxides, with an ABO3 or A2BO4 structure, are promising materials as catalysts for NO decomposition due to their low cost, high thermal stability, and, of course, their good catalytic performances. In this review, the influence factors, such as A-site substitution, B-site substitution and reaction conditions on the catalytic performance of catalysts have been expounded. The reaction mechanisms of direct NO decomposition are also discussed. Finally, major conclusions are drawn and some research challenges are highlighted.
Highlights
Hamidreza ArandiyanNOx is one of the main pollutants that can seriously endanger human health and the ecological environment
Ce enters the structural framework of La1−x Cex SrNiO4 up to 30% (x = 0.3), which is much higher than the reported ABO3 structure of perovskite-type oxides (La1−x A0 x BO3 is usually below 10%) [26,27,28]
Glisenti et al [46] studied the effect of rare-earth element perovskite oxides on the activity of the catalyst: Co and Cu were doped active cations and the results showed that Co appeared to be active in oxidation, while Cu was necessary for reduction
Summary
NOx is one of the main pollutants that can seriously endanger human health and the ecological environment. A Review on the Catalytic Decomposition of NO by Perovskite-Type Oxides. As can be seen from the above equation, the reaction is thermodynamically favorable This decomposition reaction has highly negative Gibbs free energy (∆rGm = −86 kJ/mol), and the tendency of NO decomposition to generate N2 and O2 is large. Noble metals are expensive and resources are scarce, whereas per type mixed oxides have the advantages of good thermal stability and ofstable oxy cancies on the surface. The removal of NO by perovskite-type composit has become one of the research hotspots of catalytic decomposition denitrificati catalyst. The research progress and the current state of direct catalytic decompos mixed oxides have the advantages of good thermal stability and stable oxygen vacancies. The research progress and the current state of direct catalytic decomposition of NO by perovskite-typeofoxides will be reviewed, and future developmental direction will
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