高等学校化学学报

高等学校化学学报 ›› 1984, Vol. 5 ›› Issue (2): 279.

• 研究简报 • 上一篇    

萃取体系的热力学研究(Ⅳ)——磷-32标记TBP分配法测定TBP的活度系数

彭启秀, 彭立娥, 高宏成, 王文清   

  1. 北京大学技术物理系
  • 收稿日期:1982-10-09 出版日期:1984-04-24 发布日期:1984-04-24

THERMODYNAMIC INVESTIGATION OF THE SOLVENT EXTRACTION SYSTEM (Ⅳ)——DETERMINATION OF THE ACTIVITY COEFFICIENTS OF TBP BY 32P-LABLED TBP DISTRIBUTION METHOD

Peng Qixiu, Peng Li'e, Gao Hongcheng, Wang Wenqing   

  1. Department of Technical Physics, Peking University, Beijing
  • Received:1982-10-09 Online:1984-04-24 Published:1984-04-24

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摘要： 在前文[1],我们提出用磷-32标记TBP分配法测定它在苯、正己烷、四氯化碳和氯仿中的活度系数。该法简便、可靠。为了研究TBP活度系数的变化规律和溶剂的影响,本文继续测定它在另外几类溶剂中的活度系数,并用公式来表示。

Abstract: Based on the previous paper[1], the activity coefficients f2 of TBP in n-amyl acetate, methyl cyclohexanone, n-C8H17OH, n-C8H18 have been determined by 32P-labled TBPdistribution method. These activity coefficients may be described by the following equations. lgf2=aN12 and lgf2 =A/(1+By)2, where y = N2/N1,N1 and N2 are molfractions of solvent and TBP, and constants a, A, Bwere obtained by graphical method. The effect of different solvents on the activity coefficients has also been discussed.

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