Potassium triborate was synthesized with
potassium carbonate and
boric acid by controlling suitable feed mixture ratio, reaction temperature and
dehydration temperature in the self-designed boiling reactor. According to chemical analysis, the formula of the synthetics was monohydrate
potassium triborate (KB3O5 x H2O). It's structure was characterized by XRD, FTIR, Raman and TG, and it was found by XRD analysis that the synthetics was amorphous solid. FTIR and Raman spectroscopy anal-ysis show that three coordination
B(3) -O bond, four coordination B(4) -O bond, and hydroxy and triborate
anions existed in the formula of the synthetics. Thermogravimetric (TG) analysis show that the groups which can lose mono-water existed in the formula of the synthetics, and structural formula of the synthetics was deduced as K[B3O4 (
OH)2]. Vibration spectra of the synthetics were studied, including FTIR and Raman spectroscopy. Vibration absorption peaks of some main groups of the synthetics were investigated, including three coordination
B(3) -O bond and four coordination B(4) -O bond that are the main existing forms of
boron atoms in the synthetics as well as other groups, and each vibration absorption peak was assigned.