University Chemistry ›› 2022, Vol. 37 ›› Issue (12): 2209059.doi: 10.3866/PKU.DXHX202209059

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Interconversion among Nitrogen Oxides: Analysis of Problem 5 of the 54th International Chemistry Olympiad

Yue Li, Mingtao Zhang, Wen-Juan Ruan, Xinxing Zhang, Hong-Wei Sun, Dong-Sheng Guo()   

  • Received:2022-09-22 Accepted:2022-10-08 Published:2022-10-26
  • Contact: Dong-Sheng Guo


Nitrogen oxides are a main group of gaseous pollutants. Different nitrogen oxides undergo complicated interconversion in the atmosphere. With the oxidation of NO to NO2 that takes place in the atmosphere and on the surface of solid catalyst as the main content, problem 5 of the 54th International Chemistry Olympiad presents the thermodynamic and dynamic features of this reaction, and illustrates the application of physical chemistry and surface catalysis in environmental treatment.

Key words: Nitrogen oxides, Thermodynamics and dynamics, Reaction rate, Catalysis, Adsorption