无水五硼酸钾晶体高温性质振动光谱的研究

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Abstract The effect of water vapor on the structure of anhydrous potassium pentaborate was studied at high temperature by self-designed reactor in the present paper. The vibration spectra of anhydrous potassium pentaborate crystal at high temperature were analyzed by X-ray diffraction spectrum(XRD), infrared spectrum(IR) and Raman spectrum. The ratio of B₂O₃ to K₂O in potassium pentaborate was diminished by reacting with water vapor. XRD analysis shows that K₅B₁₉O31 exists in potassium pentaborate crystal at 750 ℃, while IR and Raman analysis show that some triangular structure units(B₍₃₎—O) are changed to tetrahedral structure units(B₍₄₎—O) in the crystal. The content of tetrahedral structure unit(B₍₄₎—O) increases and the network configuration between boron and oxygen is farther broken.

Key words：Reactor;X-ray diffraction spectrum(XRD);Infrared spectrum(IR);Raman spectrum;Anhydrous potassium pentaborate crystal

Received: 2005-09-28 Accepted: 2005-12-18

ZTFLH:

O614.1

Corresponding Authors: ZHANG Jin-ping

Cite this article:

ZHANG Jin-ping,YANG Gang,LI Zuo-hu. Study on Vibration Spectrum and Properties of Anhydrous Potassium Pentaborate Crystal at High Temperature[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 26(12): 2236-2239.

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https://www.gpxygpfx.com/EN/Y2006/V26/I12/2236

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