[Synthesis, characterization and study on vibration spectra of potassium triborate].
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.
Zhang
Jin-Ping
JP
Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, China. jpzhang@home.ipe.ac.cn
Sun
Yong
Y
Yang
Gang
G
Li
Zuo-Hu
ZH
D001881:Borates / Q000138:chemical synthesis / Q000737:chemistry*; D001888:Boric Acids / Q000737:chemistry; D002254:Carbonates / Q000737:chemistry; D008956:Models, Chemical; D015394:Molecular Structure; D011188:Potassium / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013057:Spectrum Analysis / Q000379:methods*; D013059:Spectrum Analysis, Raman; D013818:Thermogravimetry; D014732:Vibration; D014961:X-Ray Diffraction
D001881:Borates; D001888:Boric Acids; D002254:Carbonates; C037593:potassium carbonate; C032688:boric acid; D011188:Potassium