Kinetic studies on the thermal decomposition of aluminium doped sodium oxalate under isothermal conditions

► Studies on the isothermal decomposition kinetics of Na2C2O4 in the range 783-803 K by TG. ► Effect of aluminium dopant on the kinetics of thermal decomposition. ► Acceleratory and decay stages of the thermal decomposition follows different reaction models. ► Rate of decomposition is dependent on dopant concentration. ► Diffusion controlled mechanism is suggested for the thermal decomposition.