KINETIC AND EQUILIBRIUM STUDIES ON THE COMPLEXATION OF NICKEL(II) BY 8-QUINOLINOL IN MICELLES OF NEUTRAL AND CHARGED SURFACTANTS

被引：22

作者：

MURALIDHARAN, S ^{[1
]}

YU, W ^{[1
]}

TAGASHIRA, S ^{[1
]}

FREISER, H ^{[1
]}

机构：

[1] UNIV ARIZONA,DEPT CHEM,STRATEG MET RECOVERY RES FACIL,TUCSON,AZ 85721

来源：

LANGMUIR | 1990年 / 6卷 / 06期

关键词：

D O I：

10.1021/la00096a027

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The kinetics of the complexation of Ni2+ by 8-quinolinol (oxine) has been investigated in neutral (Triton X-100 and Brij 35), cationic (CTAN), and anionic (SDS) micelles. The kinetic results have been interpreted by using the distribution model, considering concurrent pathways for the complexation of Ni2+ by neutral oxine and its anion both in the aqueous and the micellar phases. The relevant distribution constants of the species involved were determined independently by spectrophotometry. The distribution constants of the neutral oxine in the micelles suggest that it resides in the hydrocarbon portion of the micelles. Neutral oxine and oxine anion react faster in the micellar medium with Ni2+, with the oxine anion exhibiting a greater acceleration than the neutral oxine. The kinetic data indicate that the complexation reactions occur in bulk aqueous and bulk micellar phases and that there is no contribution from the aqueous-micellar interface. © 1990, American Chemical Society. All rights reserved.

引用

页码：1190 / 1196

页数：7

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