Mixed oxides MexCo3−xO4 (Me: Ni or Mg, x = 0–0.9) with a spinel structure were synthesized by precipitation from Me, Co nitrate solutions using (NH4)2CO3 as the precipitating agent subsequent modification of dry precipitate cesium Pechini method and calcination. The samples studied XRD, TPR, TPD methods. Their catalytic activity was in low-temperature (150–350 °C) nitrous oxide decomposition pr...