KINETIC-STUDY OF Y, BA, CU OXALATES AND COPRECIPITATED Y-BA-CU OXALATE

The kinetics of the decomposition of Y, Ba and Cu oxalates and copreci pitanted Y-Ba-Cu oxalate was investigated under a nitrogen atmosphere on the basis of dynamic thermogravimetric data, the average activation energies of the decomposition of Y, Ba and Cu oxalates were obtained from the slopes of the T. Ozawa plot. The average activation energies for the dehydration of these oxalate and coprecipitated Y-Ba-Cu oxalat e were also evaluated from the thermogravimetric curves.