Interaction of nonionic Surfactants with Cerium(IV) in HClO4 medium:: A kinetic study

被引：0
|
作者：
Shukla, Pragya [1 ]
Kambo, Neelu [1 ]
Upadhyay, Santosh K. [1 ]
机构：
[1] Harcourt Butler Technol Inst, Dept Chem, Kanpur 208002, Uttar Pradesh, India
来源：
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY | 2008年 / 29卷 / 04期
关键词：
nonionic surfactants; Triton x-100; Brij-35; cerium(IV); kinetics;
D O I：
10.1080/01932690701728908
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The kinetics of interactions of cerium(IV) with nonionic surfactants viz. Titron x-100 (polyoxyethylene (10) octyl phenol) and Brij-35 (polyoxyethylene glycol dodecyl ether) have been studied spectrophotometrically in HClO4 medium in the temperature range of 35 to 55 degrees C. The reaction rate showed a first order dependence with respect to cerium(IV). The observed rate constant was found to be proportional to [surfactant] at lower concentration while at higher [surfactant] the rate was independent to surfactant. A spectrophotometric evidence for association/complexation of cerium(IV) with surfactant monomer has been obtained. A mechanism for the interaction has also been proposed.
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页码：525 / 529
页数：5
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