物理化学学报 >> 2003, Vol. 19 >> Issue (10): 957-961.doi: 10.3866/PKU.WHXB20031015

研究论文 上一篇    下一篇

BR振荡反应的新型机理模型

褚效中;贺占博;张凤才   

  1. 天津大学理学院化学系,天津 300072
  • 收稿日期:2003-04-26 修回日期:2003-07-14 发布日期:2003-10-15
  • 通讯作者: 贺占博 E-mail:zbhe@eyou.com

A New Mechanism Model for BR Oscillating Reaction System

Chu Xiao-Zhong;He Zhan-Bo;Zhang Feng-Cai   

  1. Department of Chemistry, School of Science, Tianjin University, Tianjin 300072
  • Received:2003-04-26 Revised:2003-07-14 Published:2003-10-15
  • Contact: He Zhan-Bo E-mail:zbhe@eyou.com

摘要: 简单总结了已有BR(Briggs-Rauscher)振荡体系的机理模型的特点和不足之处,并构造了一个能模拟HIO2、I2、I-和O2 四个组分的9步反应机理的简化模型.该模型能在较大的初始输入组分浓度范围内出现周期性的振荡行为,可用于解释BR体系中的一些特定的实验现象,并且能够呈现极限环和双稳态.

关键词: BR振荡反应, 机理, 模型, 极限环, 双稳态

Abstract: Many features and disadvantages of reaction mechanisms and models suggested for BR (Briggs-Rauscher) oscillatory system are summarized briefly in this paper. Moreover, a simplified model for a nine-step reaction mechanism is proposed which can simulate concentration variations of the following four species HIO2, I2, I- and O2.The model exhibits periodic oscillatory behavior in a wide range of initial concentrations of inflow species, and can be used to elucidate some special experimental phenomena. Additionally, limit cycle and bistabilty are observed in this model.

Key words: BR oscillatory reaction, Mechanism, Model, Limit cycle, Bistability