The effect of anion micelle-forming surfactant on the electrochemical behavior of a Belousov-Zhabotinsky system

ANYL 73

Gang Hu, hugky@21cn.com1, Lin Hu, hulin21@hotmail.com2, Peicheng Wang1, and Hanhong Xu3. (1) Department of Chemistry, Anhui University, Hefei, 230039, China, (2) Institute of Applied Chemistry, East China Jiaotong University, Nanchang, 330013, China, (3) Key Lab of Pesticide and Chemical Biology, South China Agricultural University, Wu Shan Road, GuangZhou, 510642, China
The behavior of the [NiL](ClO4)2-catalyzed Belousov-Zhabotinsky system (NaBrO3—Pyruvic acid—H2SO4) has been monitored in the absence and presence of different amount of anion micelle-forming surfactant sodium doclecyl sulfate (SDS). The ligand L in the complex is 5,7,7,12,14,14-hexemethyl -1,4,8,11- tetraazacyclotetradeca -4,11-diene. The influence of SDS on the behavior of the oscillating reaction in stirred batch conditions has been studied over a wide surfactant concentration range. The experimental results have shown that the oscillating parameters (e.gs., the oscillation amplitude, the oscillation times, and the oscillation period ) were markedly affected in the surfactant concentration range 0.25-1.75 times of the critical micelle concentration (CMC). The explanation of these may be ascribed to the formation of the micelle. This finding can be used for analytical determination of SDS basing its effect on the oscillation period (or oscillation amplitude) of the Belousov-Zhabotinsky system.
 

General Papers
7:00 PM-9:00 PM, Sunday, 10 September 2006 Moscone Center -- Hall D, Poster

Division of Analytical Chemistry

The 232nd ACS National Meeting, San Francisco, CA, September 10-14, 2006