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题名: Study on the Metastable Zone Property of Boric Acid in DifferentConcentrations of MgCl2 and NaCl Solutions
作者: 孟庆芬 ;  董亚萍 ;  Kong Fanzhi ;  冯海涛 ;  李武
刊名: ACTA CHIMICA SINICA
出版日期: 2010
卷号: 68, 期号:17, 页码:1699-1706
英文摘要: The solubility and ultra solubility of boric acid (H3BO3) in solutions with different concentrations of MgCl2 and NaCl were determined by using laser detection technique. In addition, the metastable zones of H3BO3 in these solutions were obtained. Furthermore, the nuclear progression m of H3BO3 was calculated. Our experimental results showed that the stable area of H3BO3 was narrow at high temperature, and wide at low temperature. Compared to the solubility of H3BO3 only in water, the solubility of H3BO3 decreased with increasing amount of MgCl2 and NaCl in water and was more affected by MgCl2 than by NaCl. The metastable zone of H3BO3 first became narrower and then wider with increasing concentrations of MgCl2 and NaCl. The metastable zone of H3BO3 in MgCl2 and NaCl solutions was narrower than in the H3BO3-H2O system. The effect of MgCl2 on apparent nucleus progression of H3BO3 was much more than that of NaCl. The crystal grew better in medium concentration of MgCl2 and low concentration of NaCl because of the smaller nuclear progression. Therefore, crystal with greater granularity can be obtained in such buffer condition. The solubility and ultra solubility of boric acid (H3BO3) in solutions with different concentrations of MgCl2 and NaCl were determined by using laser detection technique. In addition, the metastable zones of H3BO3 in these solutions were obtained. Furthermore, the nuclear progression m of H3BO3 was calculated. Our experimental results showed that the stable area of H3BO3 was narrow at high temperature, and wide at low temperature. Compared to the solubility of H3BO3 only in water, the solubility of H3BO3 decreased with increasing amount of MgCl2 and NaCl in water and was more affected by MgCl2 than by NaCl. The metastable zone of H3BO3 first became narrower and then wider with increasing concentrations of MgCl2 and NaCl. The metastable zone of H3BO3 in MgCl2 and NaCl solutions was narrower than in the H3BO3-H2O system. The effect of MgCl2 on apparent nucleus progression of H3BO3 was much more than that of NaCl. The crystal grew better in medium concentration of MgCl2 and low concentration of NaCl because of the smaller nuclear progression. Therefore, crystal with greater granularity can be obtained in such buffer condition.
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/363002/1902
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:
Meng Qingfen,Dong Yaping,Kong Fanzhi,et al. Study on the Metastable Zone Property of Boric Acid in DifferentConcentrations of MgCl2 and NaCl Solutions[J]. ACTA CHIMICA SINICA,2010,68(17):1699-1706.
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