Abstract:
Calcium titanate, CaTiO3, an important microwave dielectric material and one of major phases in synroc (synthetic rock), a titanate ceramic with potential application for fixation of high level nuclear waste was synthesized from calcium titanyl oxalate [CaTiO (C2O4)(2)-6H(2)O] (CTO) by employing microwave heating technique. CTO heated in microwave heating system in air at 500 degrees C for 1 h gave a perovskite, CaTiO3. The product obtained by heating of CTO in the same system at 700 degrees C for the same duration was however, much more crystalline. CaTiO3 obtained by the present method was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and BET surface area measurement.