Thermal decomposition of potassium carbonatooxoperoxovanadate(V)

The thermal decomposition of K3[V(CO3)O(O2)2] was studied under isothermal, dynamic and quasi-isobaric-isothermal condition. A mixture of K4V2O7 and K2CO3 was identified as the primary product of thermal decomposition. Under experimental conditions not allowing a continuous loss of volatile products, the reaction of K4V2O7 with CO2 gives KVO3 and K2CO3.