Collect. Czech. Chem. Commun.
1986, 51, 2528-2536
https://doi.org/10.1135/cccc19862528
Kinetics of the reduction of nitrogen oxide and dinitrogen oxide by ammonia on a V2O5/Al2O3 catalyst in the absence of oxygen
Milan Čížek and Vladimír Pour
Institute of Inorganic Chemistry, Czechoslovak Academy of Sciences, 160 00 Prague 6
Abstract
The kinetics of the reduction of NO and N2O by ammonia on a V2O5/Al2O3 catalyst (15 mass % V2O5) have been measured over the temperature range 300-480 °C at atmospheric pressure. The presence of water vapour in the reaction mixture retards the reduction rates of both NO and N2O. The oxidation state of vanadium does not change within the concentration and temperature ranges investigated. From the results for the reaction kinetics and the oxidation state of vanadium it is concluded that the reduction of NO and N2O by ammonia occurs by the associative Langmuir-Hinshelwood mechanism with the surface reaction as the rate-determining step.
