高等学校化学学报

高等学校化学学报 ›› 1991, Vol. 12 ›› Issue (10): 1400.

• 论文 • 上一篇    下一篇

3,4-二羟基苯甲酸-BrO3--Fe(phen)32+-H2SO4体系中的振荡现象

李和兴, 蒋萍初, 许海涵   

  1. 上海师范大学化学系, 上海, 200234
  • 收稿日期:1990-06-05 出版日期:1991-10-24 发布日期:1991-10-24
  • 通讯作者: 李和兴

Oscillating Phenomena in 3,4-Dihydroxybenzoic Acid-BrO3--Fe(phen)32+-H2SO4System

La He-xing, Jiang Ping-chu, Xu Hai-han   

  1. Department of Chemistry, Shanghai Normal University, Shanghai, 200234
  • Received:1990-06-05 Online:1991-10-24 Published:1991-10-24

PDF (PC)

摘要： 在Belousov-Zhabotinsky(BZ)反应中,Br-通常起控制作用,初始加入少量的Br-可抑制振荡。

关键词: 3, 4-二羟基苯甲酸, Belousov-Zhabotinsky反应, 振荡频率

Abstract: Anew oscillating system. 3,4-dihydroxybenzoic acid-BrO3--Fe(phen)32+-H2SO4system was studied in detail. The role of bromide ion in the oscillation was investigated. The initial addition of bromide ion to the system produced a variety of phenomena depending on the initial bromide concentration. In certain range concentration of bromide, the system displays two types of oscillating waves, one is a low-frequency oscillating wave and the other is a high-frequency oscillating wave. Both of these oscillations are controlled by bromide ions. When bromide concentration is lower than 2. 3 ×10-3mol/L, only low-frequency oscillating wave appears, and when bromide concentration is more than 2. 9×10-3mol/L, only high-frequency oscillating wave appears. The role of bromide in this system was analyzed and the mechanism of bromide in the oscillation was proposed.

Key words: 3,4-Dihydroxybenzoic acid, Belousov-Zhabotinsky(BZ) reaction, Oscillating frequency

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