A Novel Method for Preparation of In₂O₃, Bi₂O₃ and Sb₂O₃ Oxides Using Urea at Elevated Temperature

Moamen S Refat and Abdel Ma

Abstract

The In2O3, Bi2O3 and Sb2O3 oxides were synthesized by a novel reaction of urea with InCl3, BiCl3 and SbCl3 respectively, in an aqueous media at ~ 90 oC. The infrared spectra and microanalysis, CHN, of the solid products resulted indicate that the absence of the bands of urea, but appearing the characteristic bands of oxides. A general mechanism describing the formation of oxides and decomposition of urea are suggested.