物理化学学报 >> 2008, Vol. 24 >> Issue (05): 890-894.doi: 10.3866/PKU.WHXB20080527

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肌醇在碱金属氯化物溶液中的体积性质

赵强; 邢生凯; 张骞; 孙得志   

  1. 聊城大学化学化工学院, 山东 聊城 252059
  • 收稿日期:2007-11-01 修回日期:2008-02-14 发布日期:2008-05-05
  • 通讯作者: 孙得志 E-mail:undezhisdz@163.com

Volumetric Properties of myo-Inositol in Aqueous Alkali Metal Chloride Solutions

ZHAO Qiang; XING Sheng-Kai; ZHANG Qian; SUN De-Zhi   

  1. College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, Shandong Province, P. R. China
  • Received:2007-11-01 Revised:2008-02-14 Published:2008-05-05
  • Contact: SUN De-Zhi E-mail:undezhisdz@163.com

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摘要： 使用精密数字密度计测定了298.15和308.15 K肌醇在不同浓度的LiCl-H2O、NaCl-H2O或KCl-H2O溶液中的密度, 计算了肌醇的表观摩尔体积Vφ和极限偏摩尔体积Vθφ , 得到了其由纯水溶剂转移至混合溶剂中的迁移偏摩尔体积⊿trsVθ椎 .结果表明, LiCl, NaCl和KCl在溶液中对肌醇的体积性质影响显著, 极限偏摩尔体积Vθφ和极限迁移偏摩尔体积⊿trsVθφ都随盐浓度的增大而增加；温度对肌醇的极限偏摩尔体积和极限迁移偏摩尔体积只有轻微影响. 从分子-离子间的相互作用角度对实验结果进行了讨论.

关键词: 极限偏摩尔体积, 肌醇, 碱金属盐

Abstract: Apparent molar volumes (Vφ) of myo-inositol in aqueous solutions of LiCl, NaCl, and KCl were obtained from densities, measured with a vibrating-tube densimeter, at 298.15 and 308.15 K. These data have been used to deduce limiting partial molar volumes Vθφ and limiting partial molar volumes of transfer ⊿trsVθφ from water to different salt solutions at different concentrations. The results indicated that influence of salt (LiCl, NaCl or KCl) on volumetric property of myo-inositol in aqueous solution was evident while temperature could only slightly change Vθφ and ⊿trsVθφ. The result was discussed in the light of interaction between the charged centers of myo-inositol and ions.

Key words: Limiting partial molar volume, myo-Inositol, Alkali metal salt