Pulse waves in hydrogen peroxide-sulfite-thiosulfate-perchlorate acid system  

作　　者：AN Yingli BAI Yunfeng GAO Qingyu 

机构地区：[1]College of Chemical Engineering, China University of Mining andTechnology, Xuzhou 221008, China

出　　处：《Chinese Science Bulletin》2005年第16期1688-1690,共3页

基　　金：This work was supported by the National Natural Science Foundation of China(Grant No.20103010);the Excellent Young Teachers Program of MOE,China.

摘　　要：The spatiotemporal dynamics of the hydrogen peroxide-thiosulfate-sulfite-perchlorate acid system was in-vestigated in reaction-diffusion medium. In the Petri dish, pulse waves were discovered, which had the maximum life-time and the maximum traveling distance when the initial concentration of thiosulfate was increased. In addition, pulse waves contracted back before disappearing, and the pulse waves with red spot were observed when the initial concen- tration of hydrogen peroxide was higher. The experimental results were analyzed and explained according to the reac- tion mechanism of positive and negative feedback in this system.The spatiotemporal dynamics of the hydrogen peroxide-thiosulfate-sulfite-perchlorate acid system was investigated in reaction-diffusion medium. In the Petri dish, pulse waves were discovered, which had the maximum lifetime and the maximum traveling distance when the initial concentration of thiosulfate was increased. In addition, pulse waves contracted back before disappearing, and the pulse waves with red spot were observed when the initial concentration of hydrogen peroxide was higher. The experimental results were analyzed and explained according to the reaction mechanism of positive and negative feedback in this system.

关 键 词：脉冲波 过氧化氢 亚硫酸盐 非线性化学特性 自身催化作用 

分 类 号：O65[理学—分析化学]