物理化学学报 >> 1994, Vol. 10 >> Issue (11): 1031-1034.doi: 10.3866/PKU.WHXB19941113

研究简报 上一篇    下一篇

对氨基苯甲酸BZ反应体系分区振荡行为的研究

唐宇虹, 刘铨良, 侯印兰   

  1. 中国科技大学研究生院化学部,北京 100039
  • 收稿日期:1993-07-12 修回日期:1993-12-17 发布日期:1994-11-15
  • 通讯作者: 刘铨良

Studies on the Oscillation of p-H2NC6H4COOH-KBrO3-H2SO4 System

Tang Yu-Hong, Liu Quan-Liang, Hou Yin-Lan   

  1. Graduate School of University of Science and Technology of China,Beijing 100039
  • Received:1993-07-12 Revised:1993-12-17 Published:1994-11-15
  • Contact: Liu Quan-Liang

关键词: BZ反应, 分区振荡, 溴离子控制, 非溴控制

Abstract:

The oscillations of P-H2NC6H4COOH-KBrO3- H2SO4 system are studied. The dual-frequency oscillations are found in this system. Furthermore, the influences of initial reaction conditions (concentrations of reactants and temperature) metal-ion catalysts and several additives on oscillating behaviors are concluded. These experimental phenomena suggested that the dual-frequency oscillations are controlled by two types of mechanism, one is bromide-ion controlling to the lower frequency oscillations, the other is non-brominde ion controlling to the higher ones, in which the substrate radicals play an important role. Moreover, these mechanisms are competing in the reaction system when the situation is fit for each one. Some interpretations about this are approached from the analysis of the composion of substrates and the viriation of potential during the reaction.

Key words: BZ reaction, Dual-frequency oscillation, Bromide-ion controlling, Nonbromide-ion controlling