高等学校化学学报 ›› 1989, Vol. 10 ›› Issue (6): 561.

• 研究论文 •    下一篇

介电法研究萃取过程中分子间的络合作用

彭启秀, 石秀坤, 吴名, 高宏成   

  1. 北京大学技术物理系
  • 收稿日期:1987-10-05 出版日期:1989-06-24 发布日期:1989-06-24
  • 通讯作者: 高宏成

Investigation of Complex Reaction Between Extractant Molecules by Dielectric Measurements

Peng Qixiu, Shi Xiukun, Wu Ming, Gao Hongcheng   

  1. Department of Technical Physics, Peking University, Beijing
  • Received:1987-10-05 Online:1989-06-24 Published:1989-06-24

摘要: 用介电法测定若干重要萃取剂的摩尔极化度和偶极矩,研究协萃体系中萃取剂之间的络合作用和协同萃取现象,求得缔合物、萃合物的摩尔极化度、偶极矩及缔合常数。

关键词: 萃取, 摩尔极化度, 偶极矩, 协同萃取

Abstract: The molecular dipole moment, as a very useful parameter for structural studies, has been applied to study the intermolecular interaction, such as association reaction, etc., between two extractants or extractant and extraction complex.The molar polarizabilities Pand dipole moments μ of some important extractants containing phosphorus TBP, TOPO, TBPO, P204, DBP, HDiAP, DiAEPin benzene were determined by use of dielectric measurements. These results are summarized in Table 1.Molecular-interaction between acidic and neutral extractants containing phosphorus has been studied by the same method. These formation constants Kc, molar polarizabilities Pand dipole moments μ of complexes are shown in Table 2.Dielectric property of mixed solution can be applied to the study of synergistic extraction systems.

Key words: Extraction, Molar polarizability, Dipole mement, Synergistic extraction

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