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化学学报
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化学学报 ›› 1975, Vol. 33 ›› Issue (1): 61-70. 上一篇    下一篇

论文

无机物的络合萃取研究 Ⅲ.磷酸二丁酯和锆的络合常数及萃取机理

金天柱, 徐光宪   

  1. 北京大学
  • 投稿日期:1987-03-08 发布日期:2013-06-03

EXTRACTION OF INORGANIC SPECIES THROUGH COMPLEX FORMATION Ⅲ. EXTRACTION OF ZIRCONIUM BY DIBUTYL PHOSPHORIC ACID

KING TIEN-CHU, HSU KWANG-HSIEN   

  1. Peking University
  • Received:1987-03-08 Published:2013-06-03

PDF

371

被引次数

5

研究了磷酸二丁酯的四氯化碳溶液(10-3M至10-1M)从高氯酸溶液(1～4M)中萃取锆(不踪量)的机理,得出在这一萃取体系中,水相存在各级络离子ZrA2(4-i)+,其中A-磷酸二丁酯的阴离子,它们的稳定常数(25°)经测定如下.

The equilibria for the extraction system Zr4+/HClO4-NaClO4 (u=4) /HDBP-CCl4 (10-5 to 10-1M) have been studied.In the range of concentrations studied,it has been found that Zr is extracted into the organic phase with the formation of both Zr(DBP)4 and Zr(DBP)4-(HDBP),while in the aqueous phase containing 1 to 4M HC104, Zr exists as Zr (DBP)2(4-i)+ with i=0, 1, 2, 3, 4.The formation constantion of these species have been determined as follows(25°)