BORON PHOSPHATE: ITS SYNTHESIS, GRADUAL CRYSTALLISATION AND CHARACTERISATION OF BULK PROPERTIES
Primož Kmecl and Peter Bukovec
Faculty of Chemistry and Chemical Technology, University of Ljubljana, 1000 Ljubljana, Slovenia
Boron phosphate, BPO4, was synthesised from the equimolar mixture of H3PO4 and H3BO3 at temperatures from 25 to 1200 °C. IR spectra, X-ray diffraction pattern, thermal analysis and chemical analysis of boron and phosphorus show that the synthesis occurs already at the room temperature and that the crystallisation is a gradual process. The molar ratio of boron and phosphorous remains at 1:1 independently of the temperature of synthesis.