Chinese Journal of Applied Chemistry ›› 1994, Vol. 0 ›› Issue (3): 58-61.

• Full Papers • Previous Articles     Next Articles

Diluent Effect on the Extraction of Lanthanum(Ⅲ) by HDEHP from Nitrate Solution

Chai Jinling, Li Wenhua   

  1. Department of Chemistry, Shandong Normal University, Jinan 250014
  • Received:1993-04-08 Revised:1994-01-29 Published:1994-06-10 Online:1994-06-10

Abstract: The distribution equilibria of La(Ⅲ)between aqueous nitrate solution and HDEHP in the presence of various diltuents have been studied at 298K,The extraction equilibrium constants decrease in the following order of diluents:n-hexane,cyclohexane,carbon tetrachloride,toluene,chloroform,methyl isobutyl ketone.Diluent effect on the equilibrium constants is discussed.

Key words: extraction, lanthanum, di-(2-ethylhexyl)phosphate, diluent effect