Photodecomposition of dodecyltrimethylammonium bromide in aqueous solutions in presence of hydrogen peroxide

被引:2
|
作者
Panich, N. M. [1 ]
Seliverstov, A. F. [1 ]
Ershov, B. G. [1 ]
机构
[1] Russian Acad Sci, Frumkin Inst Phys Chem & Electrochem, Moscow 119071, Russia
关键词
dodecyltrimethylammonium bromide; photodecomposition; hydrogen peroxide; SODIUM DODECYL-SULFATE;
D O I
10.1134/S0040579513050072
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
It is established that the cationic surfactant (dodecyltrimethylammonium bromide, DTAB) efficiently decomposes in an aqueous solution in the presence of H2O2 upon exposure to UV radiation. The presence of bicarbonate ions decreases the rate of photodecomposition, which is due to the acceptance of OH radicals generated in the photochemical reaction. The rate constant of OH radicals and DTAB reaction equals similar to 10(9) L mol(-1) s(-1). The kinetics of DTAB decomposition are described by the first-order reaction equation, and the effective rate constant is proportional to the H2O2 content in the solution.
引用
收藏
页码:629 / 632
页数:4
相关论文
共 50 条