三硼酸钾的合成、表征及其振动光谱的研究

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Abstract 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·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 analysis 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.

Key words：Potassium triborate;Synthesis;Characterization;Vibration spectra

Received: 2006-04-17 Accepted: 2006-08-08

ZTFLH:

O614.2

Corresponding Authors: LI Zuo-hu E-mail: O614.2

Cite this article:

ZHANG Jin-ping,SUN Yong,YANG Gang, et al. Synthesis,Characterization and Study on Vibration Spectra of Potassium Triborate[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(07): 1351-1354.

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https://www.gpxygpfx.com/EN/Y2007/V27/I07/1351

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