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题名: Polyborates in Aqueous Sodium Borate Solution at 298.15 K
作者: Zhou, Y. Q. ;  Fang, C. H. ;  房艳 ;  Zhu, F. Y. ;  Cao, L. D.
刊名: ASIAN JOURNAL OF CHEMISTRY
出版日期: 2012
卷号: 24, 期号:1, 页码:29-32
关键词: Polyborstes ;  FT-Raman spectra ;  Aqueous sodium borate solutions ;  pH
英文摘要: pH of aqueous sodium metaborate and pentaborate solutions were precisely measured as functions of concentration from dilute to supersaturation at 298.15 K. Coupling with Raman spectra of some super-saturation samples, a clear picture of the main polyborates and their equilibria was presented. At least five polyborates B(OH)(3), B(OH)(4)(-), B3O3(OH)(4)(-), B4O5(OH)(4)(2-) and B5O6(OH)(4-) exist in aqueous sodium borate solutions. In supersaturated aqueous sodium pentaborate solutions B5O6(OH)(4)(-), B3O3(OH)(4)(-) and B(OH)(3) are the main polyborates, B(OH)(4)(-), B4O5(OH)(4)(2-) present in a minor concentration. While, in aqueous sodium metaborate solutions, covering all the concentration range, B(OH)(4)(-) is the most important species other polyborate anions are less than 5 %. Relevant interactions mechanisms among polyborates were also suggested. pH of aqueous sodium metaborate and pentaborate solutions were precisely measured as functions of concentration from dilute to supersaturation at 298.15 K. Coupling with Raman spectra of some super-saturation samples, a clear picture of the main polyborates and their equilibria was presented. At least five polyborates B(OH)(3), B(OH)(4)(-), B3O3(OH)(4)(-), B4O5(OH)(4)(2-) and B5O6(OH)(4-) exist in aqueous sodium borate solutions. In supersaturated aqueous sodium pentaborate solutions B5O6(OH)(4)(-), B3O3(OH)(4)(-) and B(OH)(3) are the main polyborates, B(OH)(4)(-), B4O5(OH)(4)(2-) present in a minor concentration. While, in aqueous sodium metaborate solutions, covering all the concentration range, B(OH)(4)(-) is the most important species other polyborate anions are less than 5 %. Relevant interactions mechanisms among polyborates were also suggested.
收录类别: SCI
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内容类型: 期刊论文
URI标识: http://ir.isl.ac.cn/handle/363002/2082
Appears in Collections:青海盐湖研究所知识仓储(2014年之前)_期刊论文

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Recommended Citation:
Zhou, Y. Q.,Fang, C. H.,Fang, Y.,et al. Polyborates in Aqueous Sodium Borate Solution at 298.15 K[J]. ASIAN JOURNAL OF CHEMISTRY,2012,24(1):29-32.
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